Bolsa/A granel

Bolsa/A granel
Semi
Truck and Pup
BAG/BULK UNIT
OPERATOR'S MANUAL
Head Office:
RR#5
Guelph, Ontario,N1H 6J2
PHONE (888) 925-4642
FAX (519) 824-5651
www.walinga.com
FACTORY DISTRIBUTION AND SERVICE CENTRES:
IN CANADA:
70 3rd Ave. N.E. Box 1790 Carman, Manitoba Canada R0G 0J0
Tel (204) 745-2951 Fax (204) 745-6309
220 Frontage Rd. Davidson, Saskatchewan Canada S0G 1AO
Tel: (306) 567-3031 Fax: (306) 567-3039
IN USA:
1190 Electric Ave. Wayland, MI. USA 49348
Tel (800) 466-1197 Fax (616) 877-3474
579 4th Street NW
Sioux Center, Iowa USA 51250
Tel (800) 845-5589 Fax (712) 722-1128
PRINTED IN CANADA
ISSUE DATE: March,1999
REPRINT: October, 2007 PS .5C
Bag Bulk Operators Manual
OM PART# 34-18158-6
Dear Customer
Thank you for choosing WALINGA TRANSPORTATION EQUIPMENT. For your convenience, should you require any information related to Parts, Service or Technical Engineering,
please contact one of the following Walinga Personnel:
TECHNICAL - ENGINEERING:
Janus Droog (ext: 259) email:[email protected]
Bill DeVries (ext: 238)
email:[email protected]
Butch Medemblik (ext:250) email:[email protected]
WARRANTY CLAIMS:
Amy Vanderzwaag (ext:254) email:[email protected]
SERVICE MANAGER:
Andy Nijenhuis (ext: 228)
email:[email protected]
PARTS MANAGER:
Jack Lodder (ext: 224)
email:[email protected]
Parts Department Fax: (519) 824-0367
SERIAL NUMBER LOCATION
The serial number plate is located on the Drivers Side of the unit, at the front of the body on the
truck, and on the landing gear on trailers. Please mark the serial number and the date of
manufacture of the body in the space provided for easy reference.
DATE OF MANUFACTURE:
SERIAL NUMBER:
BAG/BULK
BULK FEED UNIT
Warranty Registration Form
Inspection Report
WARRANTY REGISTRATION
This form must be filled out by the dealer and signed by both the dealer and the customer at the time of
delivery.
Customer’s Name
Dealer Name
Address
Address
City, Prov./State, Code
City, Prov./State, Code
Phone Number (
)
Model
VIN Number
Delivery Date
SAFETY
DEALER INSPECTION REPORT
Air Lock and Blower Turn Freely
Landing Gear Moves Freely and Crank Stowed
Air and Hydraulic Lines Properly Stowed (No Leaks)
Electrical Connections Stowed
Tires at Specified Pressure
Rims Torqued
Brakes Adjusted Properly
Safety Signs Installed
Manual Supplied
All Reflectors Installed and Clean
All Lights Functioning
Brakes Release at Proper Pressure
Review Operating and Safety Instructions
I have thoroughly instructed the buyer on the above described equipment which review included the
Operator’s Manual content, equipment care, adjustments, safe operation and applicable warranty policy.
Date
Dealer’s Rep. Signature
The above equipment and Operator’s Manual have been received by me and I have been thoroughly
instructed as to care, adjustments, safe operation and applicable warranty policy.
Date
Owner's Signature
WALINGA INC.
WARRANTY
The Seller warrants to the Buyer that the Equipment manufactured by the Seller will be free from defect in
material, workmanship and title for a period of one (1) year from the date of delivery to the Buyer. This warranty
is subject to the following:
a) The Seller's obligation under said warranty shall be limited to repairing or replacing (at the Seller's option)
EXW (Ex Works) Guelph, Ontario, Canada, any part of the Equipment which, if properly installed, used
and maintained, proves defective in material or workmanship, provided that notice of any such defect and
satisfactory proof thereof is promptly given by the Buyer to the Seller;
b) All costs of the installation or transportation pursuant to this warranty are for the account of the Buyer;
c) The obligations set forth in this clause are conditional upon:
i)
Proper storage, installation (except where installation is supervised by or performed by the Seller),
use, maintenance and compliance with any applicable recommendations of the Seller; and,
ii)
The Buyer promptly notifying the Seller of any defect and obtaining authorization prior to proceed with
repairs, and if required, promptly making the goods available for correction;
d) In respect of any Equipment or part thereof supplied hereunder which are manufactured by others, the
Seller gives no warranty whatsoever, and the warranty given by the manufacturer, if any, shall apply;
e) The Seller shall not be liable for any cargo loss, loss of equipment, use or any other incidental or
consequential damages resulting from any defective part or parts, the Seller's liability and the Buyer's
exclusive remedy being expressly limited to the replacement of defective parts as provided herein;
f)
The warranty set out on this page does not apply to:
i)
tires, accessories, and other items including the items, if any listed on the face hereof as "Buyers
Specified Items", manufactured by others and the Buyer shall rely solely on the warranty, if any, of
the manufacturer of such tires, accessories and other items; nor
ii)
to any equipment, otherwise subject to this warranty, which shall have been repaired, modified or
altered in any way by anyone other than the Seller or one of its duly authorized service representatives.
g) With respect to used equipment sold hereunder, regardless of manufacture, the Seller makes no warranty
whatever, and all warranties, express or implied are hereby excluded. With respect to such used
equipment, the Buyer agrees to accept such used equipment on an "as is, where is" basis.
WARRANTY VOID IF NOT REGISTERED
V.I.N. PLATE LOCATION
Always give your dealer the V.I.N. (Vehicle Identification Number) of your Walinga Bulk Feed unit
when ordering parts or requesting service or other
information. Also provide the serial number of the
blower and airlock as well.
The plate is located where indicated. Please mark
the number in the space provided for easy reference. Also obtain and mark down the Model
Number, Production Year and other pertinent
information of your Trailer unit in the spaces provided.
Trailer (V.I.N. Plate)
Airlock Serial Number
Truck Serial Number
Blower Serial Number
Pup Serial Number
SERIAL NUMBER LOCATION
V.I.N. Number
Tires
Model Number
Blower S/N
Length
Airlock S/N
Suspension
Date Purchased
Axles
Dealer Purchased From
Wheels
Address
TABLE OF CONTENTS
SECTION
DESCRIPTION
1
2
Introduction ........................................................ 9
Safety ................................................................. 10
General Safety .................................................... 11
Operating Safety ................................................. 12
Unloading Safety ................................................ 13
Maintenance Safety ............................................ 14
Hydraulic Safety.................................................. 14
Travel Safety....................................................... 15
Tire Safety .......................................................... 15
Safety Signs........................................................ 15
Sign-Off Form ..................................................... 16
Safety Sign Locations ...................................... 17
Operation Guidelines ....................................... 22
To the New Operator or Owner .......................... 22
Terminology ........................................................ 23
Break-In .............................................................. 24
Pre-Operation Vehicle Inspection Procedure...... 26
Hooking Up/Unhooking Trailer or Pup ................ 29
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3
4
4.1
4.2
4.3
4.4
4.5
4.5.1
Hooking Up .......................................................................... 29
4.5.1.1
4.5.1.2
4.5.2
4.5.2.2
4.6
4.7
4.8
4.9
4.10
5.1
5.1.1
5.1.2
5.1.3
7.1
7.2
Pup .................................................................................................. 34
35
40
44
68
Operating Instructions ......................................................... 68
Braking Guidelines .............................................................. 69
Tires .................................................................................... 70
Optional Equipment ............................................ 71
Service and Maintenance ................................. 73
Service ................................................................ 73
5
6.1
Trailer .............................................................................................. 33
Controls ..............................................................
Machine Placement ............................................
Operation ............................................................
Transporting........................................................
4.9.1
4.9.2
4.9.3
7
Trailer .............................................................................................. 29
Pup .................................................................................................. 31
Unhooking ........................................................................... 33
4.5.2.1
6
PAGE
Fluids and Lubricants .......................................................... 73
Greasing .............................................................................. 73
Hydraulic System ................................................................. 74
Trailer Servicing Intervals ................................
Servicing Record Summary (Lubrication) ...........
Unloading System Servicing ...........................
Servicing Intervals ..............................................
Service Record ...................................................
75
86
87
87
95
TABLE OF CONTENTS
SECTION
DESCRIPTION
8
Periodic Maintenance and Adjustments ......... 96
Torque Specification Summary ........................... 96
Kingpin and Fifth Wheel Plate ............................ 98
Fifth Wheel ......................................................... 99
Axle Alignment .................................................. 100
Wheel Hubs/Bearings ....................................... 102
Wheels .............................................................. 106
Tires .................................................................. 108
Brakes .............................................................. 110
Slack Adjusters ................................................. 113
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
8.9.1
8.9.2
8.10
8.11
8.12
8.13
8.14
8.15
8.16
10
11
11.1
11.2
12
Air System Inspection ........................................................ 131
Air System Functional ........................................................ 131
Air System Schematics ...................................................... 132
ABS Vehicle Control System ............................ 133
ABS Schematics ............................................... 135
Electrical System .............................................. 136
8.16.1
9.1
9.2
9.3
Air Ride Suspension .......................................................... 123
Mechanical Suspension ..................................................... 127
Suspension System Schematics ....................................... 128
Tire Wear Patterns............................................ 129
Air System ........................................................ 131
8.13.1
8.13.2
8.13.3
9
Rockwell Automatic Slack Adjuster ................................... 113
Manual and Automatic Slack Adjuster Maintenance .......... 114
Air Chamber/Spring Break ................................ 122
Suspension System .......................................... 123
8.11.1
8.11.2
8.11.3
8.17
PAGE
Electrical Schematics ........................................................ 137
Hydraulic Schematics .......................................
Maintenance Unloading System ....................
Blower Oil Changing and Breather Cleaning ....
Airlock ...............................................................
Air System Relief Valves ..................................
Trouble Shooting ............................................
Specifications .................................................
Bolt Torque .......................................................
Hydraulic Fitting Torque ....................................
Index ................................................................
138
144
144
146
148
149
162
163
164
165
1
INTRODUCTION
Walinga appreciates your patronage and trust this unit will give you many years of trouble-free use. We
are pleased to have you join a growing number of people operating Walinga Bag/Bulk units.
We take pride in building products to meet the demands of discriminating buyers in the transporting
industry. We have sought to anticipate your needs with respect to safety, convenience, design and
engineering for your unit. Walinga provides information and service support to its customers through its
distributor and dealer network. Contact them at once should you need assistance.
Safe, efficient and trouble free operation of your Bag/Bulk unit requires that you and anyone else who will
be operating or maintaining the unit, read this manual carefully and understand the Safety, Operation,
Maintenance and Trouble Shooting information contained within the Operator's Manual. Failure to read
and follow the manual could lead to serious injuries or costly repairs.
Semi
Truck & Pup
Although some of the diagrams and pictures may not apply to all units, we have tried to show details of
common adjustments and features that are on standard production units.
Use the Table of Contents or Index as a guide in locating the specific information applicable to your unit.
Keep this manual handy for frequent reference and to pass on to new operators or owners.
OPERATOR ORIENTATION - The directions left and right as mentioned throughout this manual, are
taken as if the operator was in the driver's seat and facing in the direction of travel.
9
2
SAFETY
SAFETY ALERT SYMBOL
This Safety Alert symbol means
ATTENTION! BECOME ALERT!
YOUR SAFETY IS INVOLVED!
The Safety Alert symbol identifies
important safety messages on the
Walinga Bag/Bulk unit and in the
manual. When you see this symbol,
be alert to the possibility of personal
injury or death. Follow the instructions in the safety message.
Why is SAFETY important to you?
Accidents Disable and Kill
Accidents Cost
Accidents Can Be Avoided
3 Big Reasons
DANGER - Indicates an imminently hazardous
situation that, if not avoided, will result
in death or serious injury. This signal
word is to be limited to the most
extreme situations, typically for machine components that, for functional
purposes, cannot be guarded.
SIGNAL WORDS:
Note the use of the signal words DANGER,
WARNING and CAUTION with the safety
messages. The appropriate signal word for
each message has been selected using the
following guide-lines:
WARNING - Indicates a potentially hazardous
situation that, if not avoided, could
result in death or serious injury, and
includes hazards that are exposed
when guards are removed. It may
also be used to alert against unsafe
practices.
CAUTION - Indicates a potentially hazardous
situation that, if not avoided, may
result in minor or moderate injury. It
may also be used to alert against
unsafe practices.
10
2.1
SAFETY
YOU are responsible for the SAFE operation and
maintenance of your Walinga Bag/Bulk unit. YOU
must ensure that you and anyone else who is
going to operate, maintain or work around the unit
be familiar with the operating and maintenance
procedures and related SAFETY information
contained in this manual.
1. Read and understand the
Operators Manual and all
safety signs before operating, maintaining or adjusting
the unit.
2. Only trained competent persons shall operate
the unit. An untrained operator is not qualified
to operate the unit.
Remember, YOU are the key to safety. Good
safety practices not only protect you but also the
people around you. Make these practices a
working part of your safety program. Be certain
that EVERYONE operating this equipment is
familiar with the recommended procedures and
follows all the safety precautions. Remember,
most accidents can be prevented. Do not risk
injury or death.
•
Remember the difference between being just
a driver and an efficient operator. Drivers
may only drive but an operator is a very safe,
cost efficient and professional person.
•
Bag/Bulk unit owners must give operating
instructions to operators or employees before
allowing them to operate the equipment, and
at least annually thereafter.
•
The most important safety feature on this
equipment is a SAFE operator. It is the
operator’s responsibility to read and understand ALL Safety and Operating instructions
in the manual and to follow these. All accidents can be avoided.
•
Walinga feels that a person who has not read,
understood and been trained to follow all
operating and safety instructions is not qualified to operate the equipment. An untrained
operator exposes himself and bystanders to
possible serious injury or death.
•
•
GENERAL SAFETY
3. Have a first-aid kit available
for use should the need
arise and know how to use
it.
4. Do not allow riders outside the cab.
5. Have a fire extinguisher available
for use should the need arise and
know how to use it.
6. Wear appropriate protective gear. This list
includes but is not limited to:
- A hard hat
- Protective
shoes with
slip resistant
soles
- Heavy
gloves
- Hearing
protection
7. Wear appropriate hearing
protection when operating
for long periods of time.
Do not modify the equipment in any way.
Unauthorized modification may impair the
function and/or safety of the equipment and
affect Trailer life.
8. Place all controls in neutral, disengage PTO
clutch, stop engine, set park brake, remove
ignition key and wait for all moving parts to
stop before servicing, adjusting or repairing.
Think SAFETY! Work SAFELY!
9. Do not drink and drive.
11
2.2
OPERATING SAFETY
14. Do not unload unless all axles are on a firm
level surface.
1. Read and understand all the Operator’s
Manual and all safety signs before operating
or adjusting the Walinga Bag/Bulk unit.
15. Do not go under or within tipping arc of trailer
box frame when hoist is operating. Keep
others away.
2. Perform circle check before driving.
3. Do not allow riders outside the cab during road
or highway travel.
16. Review safety items with all personnel annually.
4. Drive very carefully when negotiating hilly or
uneven terrain.
5. Keep hands, feet, clothing and hair away from
all moving parts. Use special care around
open airlock and when next to moving cross
auger.
6. Place all controls in neutral, disengage PTO
clutch, stop the engine, set park brake, remove ignition key and wait for all moving parts
to stop before servicing, adjusting, repairing or
maintaining.
7. Stay away from power lines when operating
hoist or climbing on top of the unit. Electrocution can occur without direct contact.
8. Use care when climbing on ladder(s) and/or
platform(s) to prevent falling.
9. Maintain running gear in good condition at all
times. In addition, on trailers, maintain kingpin
and fifth wheel assembly in good condition.
10. Clear the area of all bystanders, especially
children, before starting up and operating the
units.
11. Make sure that all lights and reflectors that are
required by the local highways and transport
authorities are in place, clean and can be seen
clearly by all overtaking and oncoming traffic.
12. Do not operate unit with spring brakes caged
or brakes disabled. Block wheels if unhooked.
13. Before disconnecting the tractor from the
trailer unit(s) make sure that the tractor and
trailer are on level ground and that the trailer
wheels are securely blocked. Lower landing
gear and provide extra support if the ground is
soft. Deflate air ride if so equipped prior to
uncoupling.
12
2.3
UNLOADING SAFETY
1. Position unit on a firm level surface before
raising hoist or unloading. Soft or uneven
terrain can result in frame tipping when raising
hoist.
16. Feather the unit down slowly to avoid a highpressure build-up in the cylinder when the box
stops suddenly.
17. Always wear hearing
protection when working
with a blower. Prolonged
exposure to loud ambient
noise can produce long
term hearing loss.
2. Do not raise hoist unless there is a firm level
surface under all tires and each axle.
3. On semi units, position tractor and trailer in a
straight line to provide maximum stability
when raising hoist.
4. On semi units, lower stabilizer legs before
raising hoist (If so equipped).
5. Do not go under or within tipping arc of box
frame when hoist is operating. Keep others
away.
6. Stay away from power lines when raising
hoist. Electrocution can occur without direct
contact.
7. Use care when on ladder or on top of unit to
prevent falling. Stay away from power lines to
prevent electrocution.
8. Stay out of tank compartments when unloading, when cross auger is running and when
engine is running.
9. Lower box to the frame before releasing the
latches on the bottom of the divider(s).
10. Do not raise hoist in high wind conditions.
11. Do not move unit unless box is fully down.
12. Do not park unit with box in the raised position.
13. Do not use the cylinder as a stabilizer when
the hoist is raised. The cylinder is strictly a
lifting device and is not a structural member of
the unit.
14. Have parking brakes set before raising hoist.
15. Stay at controls while using the hoist or
unloading. Lower hoist immediately if shifting
or leaning of the box occurs.
13
2.4
MAINTENANCE SAFETY
2.5
HYDRAULIC SAFETY
1. Read and understand all the information in the
Operator’s Manual regarding maintenance,
adjusting and servicing the Bag/Bulk unit.
1. Always place hydraulic controls in neutral and
relieve pressure before disconnecting from
tractor or working on hydraulic system.
2. Place all controls in neutral, disengage PTO
clutch, stop the engine, remove ignition key
and set the park brake before adjusting,
servicing or maintaining any part of the Bag/
Bulk unit.
2. Make sure that all components in the hydraulic system are kept in good condition and are
clean.
3. Replace any worn, cut, abraded, flattened or
kinked hoses or lines.
3. Block or support the box before servicing or
maintaining any components on truck frame
or running gear.
4. Do not attempt any makeshift repairs to the
hydraulic fittings or hoses by using tape,
clamps or cements. The hydraulic system
operates under extremely high pressure.
Such repairs will fail suddenly and create a
hazardous and unsafe condition.
4. Follow good shop practices:
-
-
-
Keep service
area clean and
dry.
Be sure electrical
outlets and tools
are properly
grounded.
Use adequate
light for the job at
hand.
5. Wear proper hand and
eye protection when
searching for a highpressure hydraulic leak.
Use a piece of wood or
cardboard as a backstop
instead of hands to
isolate and identify a
leak.
5. Block wheels before de-activating brakes.
6. Maintain air system and brake components in
top condition at all times.
6. If injured by a concentrated high-pressure
stream of hydraulic fluid, seek medical attention immediately. Serious infection or toxic
reaction can develop from hydraulic fluid
piercing the skin surface.
7. Maintain fasteners in running gear systems at
their specified torque at all times.
8. Lower box to the frame, disconnect hydraulic
lines and relieve pressure before working on
hoist.
9. Establish and maintain a Trailer Preventative
Maintenance (TPM) program on your equipment. Some jurisdictions require this program
and the maintenance of records on every
commercial vehicle on the road for future
reference.
14
2.6
2.8
TRAVEL SAFETY
SAFETY SIGNS
1. Keep safety signs clean and legible at all
times.
1. Read and understand all the information in the
operator’s manual regarding procedures and
safety when operating the Bag/Bulk unit on
the road.
2. Replace safety signs that are missing or have
become illegible.
2. Make sure all the lights and reflectors that are
required by the local highway and transport
authorities are in place, are clean and can be
seen clearly by all overtaking and oncoming
traffic.
3. Replaced parts that displayed a safety sign
should also display the current sign.
4. Safety signs are available from your Distributor or the factory.
3. Drive carefully and defensively at all times
and especially when negotiating uneven or
hilly terrain.
How to Install Safety Signs:
4. Do not allow riders outside the cab during
road and highway travel.
•
Be sure that the installation area is clean and
dry.
5. Make sure you are in compliance with all local
regulations regarding transporting on public
roads and highways. Consult your local law
enforcement agency for further details.
•
Be sure temperature is above 50°F (10°C).
•
Decide on the exact position before you
remove the backing paper.
•
Remove the smallest portion of the split
backing paper.
•
Align the sign over the specified area and
carefully press the small portion with the
exposed sticky backing in place.
•
Slowly peel back the remaining paper and
carefully smooth the remaining portion of the
sign in place.
•
Small air pockets can be pierced with a pin
and smoothed out using the piece of sign
backing paper.
2.7
TIRE SAFETY
1. Failure to follow proper procedures when
mounting a tire on a wheel or rim can produce
an explosion which may result in serious
injury or death.
2. Do not attempt to mount a tire unless you
have the proper equipment and experience to
do the job.
3. Have a qualified tire dealer or repair service
perform required tire maintenance.
15
2.9
SIGN-OFF FORM
Walinga follows the general Safety Standards specified by the Society of Automotive Engineers (SAE)
and the Occupational Safety and Health Administration (OSHA). Anyone who will be operating and/or
maintaining the Bag/Bulk unit must read and clearly understand ALL Safety, Operating and Maintenance
information presented in this manual.
Do not operate or allow anyone else to operate this equipment until such information has been reviewed.
Annually review this information with all personnel.
Make these periodic reviews of SAFETY and OPERATION a standard practice for all of your equipment.
A sign-off sheet is provided for your record keeping to show that all personnel who will be working with
the equipment have read and understand the information in the Operator’s Manual and have been instructed in the operation of the equipment.
SIGN-OFF FORM
DATE
EMPLOYEE'S SIGNATURE
16
EMPLOYER'S SIGNATURE
3
SAFETY SIGN LOCATIONS
The types of safety signs and locations on the equipment are shown in the illustration below. Good safety
requires that you familiarize yourself with the various safety signs, the type of warning and the area, or
particular function related to that area, that requires your SAFETY AWARENESS.
• Think SAFETY! Work SAFELY!
J
EF
B K
A CF GH
H
C
B
A
CAUTION
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Read Operator’s Manual and safety signs before operating.
Do not load trailer in excess of the gross vehicle weight
rating shown on the certification plate.
Do not allow riders on the trailer.
Keep hands, feet, clothing and hair away from all moving
parts.
Place all controls in neutral, stop the engine, set park
brake, remove ignition key and wait for all moving parts to
stop before servicing, adjusting, repairing or maintaining.
Maintain king pin, fifth wheel assembly and all running gear
components in good condition at all times.
Make sure that all lights and reflectors are clean and
working when transporting on public roads.
Do not operate unit with spring brakes caged or brakes
disabled. Block wheels if unhooked.
Keep all hydraulic lines, fittings and hoses tight, free of
leaks and in good condition at all times.
Stay away from overhead power lines when raising box to
prevent electrocution.
Do not go under or within tipping arc of trailer box frame
when hoist is operating. Keep others away.
Raise box only when unit is on firm, level ground and
evenly loaded.
Do not unhook trailer if it is loaded.
Do not load trailer unless it is attached to a towing unit.
Review safety items with all personnel annually.
DANGER
ROTATING AUGER HAZARD
KEEP AWAY
To prevent serious injury or death from
rotating auger:
1. Place all controls in neutral, stop
engine, set park brake, remove ignition
key and wait for all moving parts to
stop before servicing, repairing,
adjusting or unplugging.
2. Do not operate with the auger guards
removed.
3. Do not stand near augers when operating. Keep others away.
53-17705-6
REMEMBER - If safety signs have been damaged, removed, become illegible or parts replaced without
signs, new signs must be applied. New signs are available from your authorized dealer or factory direct.
17
The types of safety signs and locations on the equipment are shown in the illustration below. Good safety
requires that you familiarize yourself with the various safety signs, the type of warning and the area, or
particular function related to that area, that requires your SAFETY AWARENESS.
• Think SAFETY! Work SAFELY!
D
BG
EF
C
D
DANGER
DANGER
Do not place intake tube near feet when
standing on top of grain. Sufficient material
can be removed to draw operator and intake
tube into grain. Submersion in grain can
cause suffocation.
OVERHEAD HAZARD
53-15639-6
Truck box could drop suddenly or
tip unexpectedly during operation.
To prevent serious injury or death:
1. Do not go under or within tipping arc
of truck box frame when hoist is
operating. Keep others away.
2. Never leave a partly raised vehicle.
3. Always securely prop or block box
frame before working under body.
4. Do not raise unit unless vehicle is on
firm level ground.
REMEMBER - If safety signs have been damaged, removed, become illegible or parts replaced without
signs, new signs must be applied. New signs are available from your authorized dealer or factory direct.
18
The types of safety signs and locations on the equipment are shown in the illustration below. Good safety
requires that you familiarize yourself with the various safety signs, the type of warning and the area, or
particular function related to that area, that requires your SAFETY AWARENESS.
• Think SAFETY! Work SAFELY!
EF
EF
BG
G
E
WARNING
FALLING HAZARD
To prevent serious injury or death from
falling:
1. Use care when climbing ladder or
working on platform.
2. Keep unauthorized people off machine.
3. Do not allow riders.
53-17702-6
F
DANGER
ELECTROCUTION HAZARD
To prevent serious injury or death from
electrocution:
• Stay away from power lines when
transporting and raising or lowering
truck box.
• Electrocution can occur without
contacting power lines.
53-17701-6
REMEMBER - If safety signs have been damaged, removed, become illegible or parts replaced without
signs, new signs must be applied. New signs are available from your authorized dealer or factory direct.
19
The types of safety signs and locations on the equipment are shown in the illustration below. Good safety
requires that you familiarize yourself with the various safety signs, the type of warning and the area, or
particular function related to that area, that requires your SAFETY AWARENESS.
• Think SAFETY! Work SAFELY!
EF
G
A
K
H
B
B
F
J
G
C
H
G
WARNING
WARNING
ROTATING AIRLOCK BLADES HAZARD
KEEP AWAY
HIGH-PRESSURE FLUID HAZARD
To prevent serious injury or death from
high-pressure:
1. Relieve pressure on system before
repairing, adjusting or disconnecting.
2. Wear proper hand and eye protection
when searching for leaks. Use wood or
cardboard instead of hands.
3. Keep all components in good repair.
To prevent serious injury or death:
1. Place all controls in neutral, stop engine,
remove ignition key and wait for all
moving parts to stop before opening
access door.
2. Close access door before operating.
3. Keep hands, feet, hair and clothing away
from moving parts.
53-04730-6
53-15638-6
REMEMBER - If safety signs have been damaged, removed, become illegible or parts replaced without
signs, new signs must be applied. New signs are available from your authorized dealer or factory direct.
20
The types of safety signs and locations on the equipment are shown in the illustration below. Good safety
requires that you familiarize yourself with the various safety signs, the type of warning and the area, or
particular function related to that area, that requires your SAFETY AWARENESS.
• Think SAFETY! Work SAFELY!
J
WARNING
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
J
Position unit on a firm level surface before raising
hoist or unloading. Soft or uneven terrain can result
in frame tipping when raising hoist.
Do not raise hoist unless there is a firm level surface
under all tires and each axle.
On semi units, position tractor and trailer in a straight
line to provide maximum stability when raising hoist.
On semi units, lower stabilizer legs before raising
hoist.
Do not go under or within tipping arc of box frame
when hoist is operating. Keep others away.
Stay away from power lines when raising hoist.
Electrocution can occur without direct contact.
Use care when on ladder or on top of unit to prevent
falling. Stay away from power lines to prevent
electrocution.
Stay out of tank compartments when unloading,
when cross auger is running and when engine is
running.
Lower box to the frame before releasing the latches
on the bottom of the divider(s).
Do not raise hoist in high wind conditions.
Do not move unit unless box is fully down.
Do not park unit with box in the raised position.
Do not use the cylinder as a stabilizer when the hoist
is raised. The cylinder is strictly a lifting device and
is not a structural member of the unit.
Have parking brakes set before raising hoist.
Stay at controls while using the hoist or unloading.
Lower hoist immediately if shifting or leaning of the
box occurs.
Feather the unit down slowly to avoid a highpressure build-up in the cylinder when the box stops
suddenly.
Always wear hearing protection when working with
an air pump. Prolonged exposure to loud ambient
noise can produce long term hearing loss.
K
B
A
H
F
C
G
L
K
Fig. 3-1 Inside Shot at Unit Showing Divider
L
CAUTION
Maximum load to be
placed in front of load
divider is
6 tonne
53-17159-6
REMEMBER - If safety signs have been damaged, removed, become illegible or parts replaced without
signs, new signs must be applied. New signs are available from your authorized dealer or factory direct.
21
4
OPERATION GUIDELINES
OPERATING SAFETY
1. Read and understand all the Operator’s
Manual and all safety signs before operating
or adjusting the Walinga Bag/Bulk unit.
10. Clear the area of all bystanders, especially
children, before starting up and operating
the units.
2. Perform circle check before driving.
11. Make sure that all lights and reflectors that
are required by the local highways and
transport authorities are in place, clean and
can be seen clearly by all overtaking and
oncoming traffic.
3. Do not allow riders outside the cab during
road or highway travel.
4. Drive very carefully when negotiating hilly or
uneven terrain.
12. Do not operate unit with spring brakes
caged or brakes disabled. Block wheels if
unhooked.
5. Keep hands, feet, clothing and hair away
from all moving parts. Use special care
around open airlock and when next to
moving cross auger.
13. Before disconnecting the tractor from the
trailer unit(s) make sure that the tractor and
trailer are on level ground and that the trailer
wheels are securely blocked. Lower landing
gear and provide extra support if the ground
is soft. Deflate air ride if so equipped prior to
uncoupling.
6. Place all controls in neutral, disengage PTO
clutch, stop the engine, set park brake,
remove ignition key and wait for all moving
parts to stop before servicing, adjusting,
repairing or maintaining.
14. Do not unload unless all axles are on a firm
level surface.
7. Stay away from power lines when operating
hoist or climbing on top of the trailer. Electrocution can occur without direct contact.
15. Do not go under or within tipping arc of
trailer box frame when hoist is operating.
Keep others away.
8. Use care when climbing on ladder(s) and/or
platform(s) to prevent falling.
16. Review safety items with all personnel
annually.
9. Maintain running gear in good condition at all
times. In addition, on trailers, maintain
kingpin and fifth wheel assembly in good
condition.
4.1
TO THE NEW OPERATOR OR OWNER
It is the responsibility of the owner and operator to be familiar with the weight and loading
of your trailer. Trailer weight and loading
requirements vary from jurisdiction to jurisdiction. Be familiar with yours and any that you
will be travelling through.
The Walinga Bag/Bulk units combine light weight
construction methods combined with high strength
materials to become a safe, reliable and efficient
feed, grain or bulk material hauling unit. Be sure
to familiarize yourself with the unit by reading this
Operator's Manual, the Safety Alerts and any
other material provided with the unit before
attempting to operate it. With careful use and a
good maintenance schedule, the unit will give
many years of trouble-free use.
22
4.2
TERMINOLOGY
The Walinga Bag/Bulk unit is
available as a semi-trailer, a
straight frame truck or a pup
trailer. High strength aluminium is used for the body
and structural components to
minimize weight and maximize
payload.
A hydraulically powered cross
auger is used to move the
material from the back corners
of the box to the centre of the
box for unloading. The material can be unloaded directly
through the unloading door in
the rear doors or dropped into
the airlock for air unloading. A
sliding gate controls the flow of
material to the airlock.
A
M
G
N
A
B
J
The controls for all systems are
located in the box on the left
rear corner. Each truck or
tractor unit must be equipped
with hydraulic power to provide
oil flow to the hydraulic motors
and.
The semi-trailer can be
equipped with stabilizer legs for
added stability when raising the
hoist.
K
D
D
Moveable pivoting dividers can
be used to form individual
compartments in the box.
Retract the bottom pins to allow
the divider to swing out of the
way for unloading.
A
B
C
D
E
F
G
H
J
K
L
M
N
C
E
Body
Grain Chute
Cross Auger
Divider
Air Lock
Blower
Control Box
Pre-Cleaner
Pup Trailer
Air Line (Jumper Line)
Delivery Line Storage
Hoist
Stabilizer Legs
H
E
Fig. 4-1 PRINCIPLE SYSTEMS
23
4.3
BREAK-IN
Break-in is the most important time in a Truck or a
Trailer's life. It is critical that the unit be checked
frequently during the first 5000 miles to be sure
that all components and systems are properly
adjusted and performing as required.
The following inspection schedule is provided as a
guide for normal operating conditions. More
frequent inspections are recommended in severe
or extreme conditions.
Inspect at:
50-100 miles, 1-2 hours
500 miles, 8-10 hours
1500 miles, 25-30 hours
5000 miles, 100 hours:
1. Brakes
It takes a few weeks of operation for the brake
shoes to mate with the drum contour and
burnish the surface. During this period of
time, the operator should check the brakes
every day. After the first month, inspection of
the brakes every 2 weeks or every 10,000
miles is required. Check the function and
adjustment of the brakes on each axle. All
brakes should apply evenly. No shoes should
drag on the drum when the brakes are not
applied.
4. Axles
Each wheel bearing is assembled at the
factory with the required end play (refer to
Section 8.5). This end play should be
checked to insure proper axle and bearing
function. Check the temperature of the hub
by hand after 10 to 15 miles (15 to 25 km)
during the first trip. A hot hub must have the
bearing end play reset before continuing.
Jack the axle up and support it on a stand.
Turn the wheel by hand. The wheel should
turn freely. If it does not, check if the brakes
are dragging or if the bearing has too much
end play. If either of these conditions exist,
correct before proceeding.
2. Tires
Tires are designed to provide maximum life
and performance when maintained at their
specified inflation pressure. Although the tires
are inflated to their specified pressure at the
factory, the pressure can change before going
into service. Always use an accurate gauge
to check the pressure when the tire is cold.
Move the wheel laterally on the axle shaft. If
the wheel wobbles, the bearing has lost its
proper end play. Tighten bearing and set end
play before continuing.
3. Wheels/Rims
Although lug bolts and rim fasteners are
always tightened to their specified torque at
the factory, it is normal for them to lose some
of their torque during the first few miles of
operation. Always retorque lug bolts and rim
fasteners to be sure that they stay tight. Then
go to the retorquing interval defined in the
Maintenance section of every 25,000 miles.
Keep all fasteners tightened to their specified
torque to prevent damaging any components.
5. Hub Lubricant Levels
a. Oil Bath:
Oil bath hubs are used on some trailers
and are filled at the factory. Check hubs
frequently (at least daily) during the first
few weeks of operation. Always check
when the oil is cold and the trailer is on
the level. Use the level mark on the hub
face when checking oil level. Replace
seals and gaskets if hub has an oil leak.
Do not operate without oil in the hub.
Whenever a wheel is removed from an axle,
the above retorquing procedure must be
followed to be sure that the wheel is secured
to the axle. If any component is damaged due
to loose fasteners, it will have to be replaced.
b. Grease Packed:
Grease packed hubs are used on some
trailers and do not require servicing
unless the wheel end is being serviced or
removed.
24
4.3
BREAK-IN (cont'd)
b. Fifth Wheel Assembly:
The fifth wheel assembly consists of the
king pin locking mechanism, surface
plate, frame, pivot and anchor system.
Check that the king pin locking mechanism locks and unlocks easily and that all
moving surfaces are coated with grease.
Check that the surface plate is free of grit
and coated with grease.
6. Suspension
A suspension system connects the axles to
the frame. All fasteners must be maintained
at their specified torque to ensure that all
clamping and anchoring forces remain intact.
If these forces are not maintained, components can shift or move and affect the performance and component life. Refer to
Maintenance Section for the list of required
torque values for all fasteners in suspension
system. Any loosening can lead to component shifting, misalignment and/or twisting.
Any of these items can cause erratic handling,
broken components or rapid tire wear. Always tighten the nut end of fastener. Specified torque values apply only to nut end
torquing.
Check the surface plate and anchor frame
for cracks, bends or distortions. Replace
any damaged components. Retorque
fasteners to maintain the proper clamping
forces on all components. Loose fasteners can cause components to move or
bend and create mechanical or safety
problems during operation.
7. Axle Alignment
Axle alignment is properly set at the factory
when the unit is new and will remain aligned
unless fasteners loosen or components wear.
Use a steel measuring tape to check the
alignment. Refer to Maintenance Section for
alignment checking procedure. Axles that are
out of alignment can cause erratic handling
characteristics, broken components and
accelerated tire wear.
9. Electrical, Hydraulic and Air Lines
Electrical, hydraulic and air lines extend from
the front of the unit to each electrical, hydraulic and air operated component. Although
they are all anchored along their routing
pathways from the factory, they occasionally
do come loose and will sag. Inspect all lines.
Use plastic ties to secure line to frame if any
are loose and sag. Replace if any are
pinched, kinked, cut or abraded. Extra care
should be taken in cold or extreme operating
conditions. Ice, mud or brush can pull lines
loose from their anchors and cause damage.
Clean components, repair damage, re-anchor
and install protectors if appropriate. Do not
operate with damaged components.
8. Fifth Wheel Assembly Components
The king pin, anchor frame and upper and
lower fifth wheel assemblies must be inspected to check for mechanical integrity of all
components. All components and systems
must be kept in good condition to safely and
reliably transmit the accelerating, braking and
side loads between the trailer, fifth wheel and
towing vehicle.
a. King Pin:
Check the king pin for cracks, chips, or
whether it is bent. Check that there are
no cracks or distortions between the king
pin and its anchor frame. If any defects
are found, replace the king pin and its
anchor frame before resuming work.
25
4.4
PRE-OPERATION VEHICLE INSPECTION PROCEDURE
WALK AROUND SEQUENCE
The safe and trouble-free use of a Walinga Bag/
Bulk Unit requires the operator to maintain the unit
in good operating condition. To assist the operator, a pre-operation checklist is provided that
should be followed each time before the unit is
used.
Step 1 - Trailer Frontal Area
1. Air, Hydraulic and Electrical Connections
a. Glad hands properly mounted, free of
damage, not leaking and not worn.
b. Electrical line receptacle properly
mounted, free of damage, plug adequately seated and safety catch engaged to prevent accidental disconnection.
c. Hydraulic couplers properly seated and
tightened, no leaks and properly secured
against tangling, snagging and chafing,
with sufficient slack for turning.
d. Air, electrical and hydraulic lines properly
secured against tangling, snagging and
chafing with sufficient slack for turns.
NOTE
The tractor items, part of the
Department of Transport
(D.O.T.) walk around sequence,
have been omitted.
2. Lights and Reflectors
a. Front trailer clearance and identification
lights - should be clean, operating and
proper color.
b. Reflectors and conspicuity tape clean and
proper color.
Step 2 - Coupling System Area
1. Fifth Wheel (Lower)
a. Securely mounted to frame.
b. No missing or damaged parts.
c. No visible space between upper and
lower fifth wheel.
d. Locking jaws around the shank and not
the head of kingpin.
e. Release lever properly seated and safety
latch lock engaged.
2. Fifth Wheel (Upper)
a. Kingpin not worn, bent or damaged.
b. Anchor frame not cracked, bent, worn or
damaged.
Fig. 4-2 WALKAROUND SEQUENCE
3. Air, Hydraulic and Electric Lines Visible
From This Point
a. Should be secure from dangling, snagging and chafing.
b. Should be free from damage and clean.
26
4.4
PRE-OPERATION VEHICLE INSPECTION PROCEDURE (cont'd)
Step 3 - Right Side of Trailer Area
1. Front Trailer Support (Landing Gear)
a. Fully raised and secured, no missing
parts, not bent or otherwise damaged.
b. Crank handle present and secured
(typically on left side).
2. Spare Tires
a. Carrier or rack not damaged.
b. Tire and/or wheel securely mounted in the
rack.
c. Tire and wheel condition adequate.
Proper spare tire size, correctly inflated.
3. Lights and Reflectors
a. Trailer side clearance lights clean, operating and proper color.
b. Reflectors and conspicuity tape clean and
proper color.
4. Frame and Body
a. Frame and cross members not bent,
cracked, damaged or missing.
b. Body parts not damaged or missing.
Fig. 4-3 WALKAROUND SEQUENCE
5. Air Tank
a. Drain moisture from air tank(s). Pull on
cable attached to drain valve. Hold cable
until the tank moisture is drained.
NOTE
In cold weather, it is best to
drain the moisture from the
tanks at the end of the day to
prevent ice build-up in the tanks.
27
Step 4 - Right Rear Trailer Wheel Area
Step 6 - Rear of Trailer
1. Dual Wheels
a. Condition of wheels and rims, no cracked
or bent rims, broken spacers, studs,
clamps or lugs.
b. Condition of tires - properly inflated, valve
stems not touching wheel rims or brake
drums, valve caps in place, no serious
cuts, bulges, tread wear or any signs of
misalignment and no debris stuck between the tires.
c. Tires all same type e.g. do not mix radial
and bias types on the same axles.
d. Wheel bearings and hub - no obvious
leaking.
e. Mud flaps in place and in good condition.
1. Lights and Reflectors
a. Rear clearance and identification lights, clean
and operating and proper color.
b. Reflectors and conspicuity tape clean and
proper color.
c. Tail-lights clean, operating and proper color.
2. Tandem or Triaxles
a. Repeat wheel and tire inspection as
above.
b. Flexible air lines not cracked, cut, crimpled or otherwise damaged, secured
against tangling, dragging or chafing.
c. Sliding axle anchor pins locked in place.
Step 7 - Left Rear Trailer Wheel Area
3. Suspension
a. Mechanical:
Condition of spring(s), spring hangers,
equalizers and U-bolts.
b. Air:
Condition of air bag(s), axle clamping
bolts, pivot arm and height control valve.
c. Check that air suspension is inflated and
at proper ride height.
1. Check all items as done on right side (Step 3
"Right Side of Trailer Area").
2. Air System
a. Check that all air line plugs are installed and
secured.
b. Open and clean pre-cleaner.
c. Check that the cleaner cover is closed and
secured.
2. Check Unloading Systems
Check that rear doors and unloading door are
closed and secured, compartment gates are
stowed and secured, airlock slide closed, delivery
lines in their storage compartment, compartment
covers are closed, control box door closed and
secured, and all guards in place and secured.
Check all items as done on right side (Step 4
"Right Rear Trailer Wheel Area").
Step 8 - Left Side of Trailer Area
Step 9 - Trailer Functional Check
(Tractor Attached)
4. Box Pivot (Body Hinge)
a. Hinge shaft should go through pivot frame
brackets.
b. All pivot frame brackets and adjacent
frame should be in good condition.
Step 5 - Brakes
1. Brakes
a. Condition of brake drum(s).
b. Condition of hoses, lines and valves.
c. Check slack adjusters.
d. Check air chamber mounting.
e. Check spring brakes (if so equipped).
f. Drain moisture from air tank with cable.
28
1. Check for proper connection of the air brake gladhands, hydraulic system couplers and secure
contact of electrical connection.
2. Start engine.
3. Build up air pressure in the tractor-trailer systems.
4. Turn on lights and inspect for proper function of:
a. Clearance lights.
b. Identification lights.
c. Turn signals and 4-way flasher.
d. Sidemarker lights.
e. Tail lights.
f. Stop lights.
5. Check the function of brakes.
a. Apply service brakes.
b. Apply parking/emergency brakes.
c. Stop engine.
i. Release trailer emergency brakes.
ii. Apply service brakes
Air loss should not exceed
3 psi per minute on single vehicles.
4 psi per minute on combination.
4.5
HOOKING UP/UNHOOKING TRAILER OR PUP
Special care should be taken when
hooking up or unhooking trailer or pup to
be sure the equipment is in good condition and all systems are functioning as
required.
4.5.1
HOOKING UP
4.5.1.1
TRAILER
Follow this procedure when hooking up
the trailer to tractor:
1. Back the tractor up in a straight line to
the trailer and align the fifth wheel
opening with the trailer king pin.
King Pin
2. Stop before the fifth wheel makes
contact with the trailer and apply the
towing vehicle parking brake.
3. Inspect all the coupling components
before hooking up:
a. Inspect trailer coupling components. Check that king pin is not
broken, bent or chipped. Check
that the anchor frame is not
distorted or cracked. If problems
found, correct before proceeding.
b. Inspect fifth wheel coupling
components. Check that the fifth
Fifth Wheel
wheel assembly is securely
Fig. 4-4 COUPLING COMPONENTS
anchored to the tractor frame.
Check that the structure of the
frame, pivot and fifth wheel is not
bent, broken or cracked. Check
that the jaws of the lock are open.
If problems found, correct before
proceeding.
c. Be sure that the fifth wheel plate is
cleaned and greased.
4. Check that the trailer is at the required height
to slide onto the fifth wheel.
a. Use the crank on the landing gear to raise
or lower the trailer as required.
b. Put the blocks or chocks in front of and
behind wheels.
The trailer frame should contact the fifth wheel
just behind the pivot point as the tractor backs
under the trailer. Put the blocks or chocks in
front of and behind wheels.
29
5. Connect brake and electrical lines.
Route the lines so they do not get
pinched.
6. Back slowly under trailer keeping the
king pin centered in the fifth wheel
jaws.
7. Back up until the fifth wheel coupler
locks on the trailer king pin.
8. Move the towing vehicle forward
sharply while the trailer brakes are
engaged to check that the jaws have
locked around the king pin.
9. Set tractor parking brake, stop engine
and dismount.
5th Wheel
10. Visually check that the coupler jaws
are securely locked around the king
pin and the coupler release lever is in
the locked position. Release and hook
up again if the jaws are not securely
locked around the king pin.
11. Check that the trailer frame is resting
on the fifth wheel.
12. Check brake application by applying
and releasing brakes. If brakes do not
Lock
release, air lines may be crossed. Do
Fig. 4-5 COUPLER LOCKS
not continue unless brakes are functioning properly.
13. Connect and secure the pressure and
return hydraulic lines. Start hydraulic
pump and check that there are no leaks.
14. Check that all electrical circuits are completed
and that all lights are working.
15. Route the electrical, hydraulic and air lines to
prevent snagging, dragging and pinching.
16. Raise the landing gear. Use the crank to
raise the legs. Place drive gear in low ratio
and stow crank.
17. Check that air ride bags are inflated to proper
height.
18. Remove blocks or chocks from the wheels.
19. Perform Pre-Operation Inspection before
starting.
30
4.5
4.5.1.2
HOOKING UP/UNHOOKING TRAILER OR PUP (cont'd)
PUP
Follow this procedure when hooking up a pup to a
truck:
1. Back the tractor up in a straight line to the pup
and align the ball with the hitch.
2. Stop as the ball
nears the hitch and
apply the truck
parking brake.
3. Inspect all the hitch
components before
hooking up:
a. Inspect truck
frame anchor
components.
Check that ball
is clean and free
of mud and
debris. Check
that ball is not
damaged or
Fig. 4-6 PUP
bent. Be sure
anchor frame is
not bent, distorted or cracked. Correct
problems before hooking up.
b. Inspect hitch/tongue components. Check
that hitch pocket, linkage and wedge are
open, clean and move freely. Check that
the hitch is not bent, distorted or cracked.
Be sure the 2 safety chains are in place
and their hooks are in good condition.
Correct problems before hooking up.
c.
Clean the hitch ball and apply a light
coating of grease to the ball.
8. Lower the hitch jaws over the ball until the
jack raises slightly off the ground.
4. Check that the hitch is at the required height
to clear the ball as the unit moves into position. Use the jack to set the hitch height as
required.
9. Move the wedge against the ball and secure.
Release the air from pup and check for ball
tightness.
5. Connect the brake and electrical line. Route
the lines so they do not get pinched.
IMPORTANT
6. Back slowly under hitch aligning the ball under
the pocket. Stop when they are aligned.
Be sure the wedge is postioned
snugly up against the ball to
prevent jerking or disconnecting.
7. Set tractor parking brake, stop engine and
dismount.
31
10. Pull the pup forward sharply to pull the ball to
the front of the jaws. Check the wedge again
to be sure that it is snug against the ball.
Adjust if required.
11. Check brake application by applying and
releasing brakes. If brakes do not release, air
lines may be crossed. Do not proceed unless
brakes are functioning properly.
12. Connect and secure the
pressure and return
hydraulic lines. Start
hydraulic pump and check
that there are no leaks.
13. Attach the safety chains to
their anchors. Be sure to
cross them under the
hitch.
14. Raise the jack to its fully
up position and stow the
crank.
15. Give the hitch grease
fitting on top of the ball 10
Fig. 4-7 ATTACHED
shots of grease to lubricate the ball/jaws for
turning.
16. Check that all the electrical circuits are completed and that all the lights are working.
17. Route the electrical, hydraulic and air lines to
prevent snagging, dragging and pinching.
18. Check that the air ride bags (if so equipped)
are inflated to proper height.
19. Remove blocks or chocks
from the wheels. (See
page 4-8).
20. Perform Pre-Operation
Inspection before starting.
Fig. 4-8 TRAIN
32
4.5.2
UNHOOKING
4.5.2.1
TRAILER
1. Position tractor and trailer in a
straight line on a clear, level and firm
surface.
2. Apply the trailer brakes and the
parking brakes on the tractor before
dismounting.
3. Place blocks or chocks in front of
and behind trailer wheels on any
level or unlevel surface.
4. Check that the surface under the
landing pads can support the trailer.
Support with blocks or planks if
required. This is particularly important if the trailer is loaded or will be
loaded while unhooked.
Fig. 4-9 LANDING GEAR
5. Deflate air suspension system.
6. Lower landing gear.
NOTE
Don't load the front on a
short trailer supported only
on landing gear legs.
7. Unhook fifth wheel coupler.
8. Release tractor parking brake and
pull slowly forward until the trailer
frame just slides down the fifth wheel
ramp. Stop.
9. Set the parking brake on the tractor
before dismounting.
10. Disconnect air and hydraulic lines
and electrical connect.
Fig. 4-10 CONNECTIONS
11. Install glad hands on dead end
connectors if so equipped.
12. Drive tractor away from trailer.
13. Drain air tanks if operating in cold temperatures to eliminate ice build-up.
14. Inspect the equipment. Document problems
found so they can be corrected before the unit
will be used the next time. Record problems
and repairs for your files.
33
4.5.2.2
PUP
1. Position tractor and pup in a straight line on
a clear, level and firm surface.
2. Apply pup brakes and the truck parking
brakes before dismounting.
3. Place blocks or chocks in front of and behind
wheels if not on a level surface.
4. Check that the surface under the jack can
support the weight of the front of the pup.
Support with blocks or planks if required.
This is particularly important if the unit is
loaded.
Attached
5. Deflate air suspension system (if so
equipped).
6. Lower hitch jack until the hitch weight starts
to come off the ball.
7. Disconnect and stow the safety chains.
8. Open hitch clamping jaws by sliding wedge
away from the ball.
9. Resume lowering jack until the hitch lifts off
and clears the ball.
10. Be sure the air unload air line is disconnected from the truck and stowed on the
pup.
Hitch
Fig. 4-11 PUP
11. Disconnect the air and electrical lines.
12. Install glad hands on dead end connectors if
so equipped.
13. Relieve the pressure in the hydraulic system
and disconnect the pressure and return
lines.
IMPORTANT
Stop hydraulic pump and move a control
lever back and forth several times to relieve
system pressure. Jiggle the levers on the
Pup before unhooking the hydraulic lines.
Don't do this with the hydraulic landing gear
leg if so equipped.
14. Drive truck away from pup.
15. Drain air tanks if operating in cold temperatures to eliminate ice build-up.
16. Inspect the equipment. Document problems
Fig. 4-12 UNHOOKED
found so they can be corrected before the
unit will be used the next time. Record
34
problems and repairs for your files.
4.6
CONTROLS
Before starting to work, all operators
should familiarize themselves with the
location and function of all controls. Each
unit is controlled by the controls in the box
on the left rear corner of the machine.
h
b c
1. Control Box :
a. Air Dump Valve:
This 2 position valve is located in
the dump line for the air suspension air system. Move the handle
toward the back of the unit to
close the dump line. The valve
must be in this position to reinflate the air suspension. Move
the handle at right angles to the
truck to dump the air from the
suspension.
e
f
m
g
k
a
Semi Trailer
b. Airlock Speed:
This flow control valve controls
the amount of oil flowing to the
airlock drive circuit. Turn the
knob clockwise (in) to close the
valve and slow the speed and
counter-clockwise (out) to increase the speed.
c.
d
f
c n
p
g o
b
Airlock:
This 3 position hydraulic valve
controls the operation of the
airlock. Pull the lever forward to
run the airlock in the forward
direction for unloading. Place the
lever in its centre position to stop
the airlock. Push the lever in its
back position to run in the reverse
direction. The reverse direction is
normally used only momentarily
to assist in unplugging.
k
Truck
h
b
d. Left Stabilizer:
c
This spring-loaded to neutral
centre 3 position hydraulic valve
controls the operation of the left
hand stabilizer at the rear axles.
a
Push the lever in and hold to
lower the left stabilizer. To stop
stabilizer, release the lever and
the centring spring will return it to
its centred neutral position. Pull
the lever and hold to raise the
Pup
stabilizer. Release the lever for it
Fig. 4-13 CONTROL BOX
to return to its centred neutral
position.
35
f
g
k
1. Control Box (cont'd):
e. Right Stabilizer:
This spring-loaded to neutral centre 3
position hydraulic valve controls the
operation of the right hand stabilizer at the
rear axles. Push the lever in and hold to
lower the right stabilizer. To stop stabilizer, release the lever and the centring
spring will return it to its centred neutral
position. Pull the lever and hold to raise
the stabilizer. Release the lever for it to
return to its centred neutral position.
f.
n. Transfer Airlock:
This 3 position hydraulic valve controls
the operation of the transfer airlock. Pull
the lever out to run the transfer airlock in
the forward or working direction. Place
the lever in its centred position to stop the
airlock. Push the lever in its back position
to run in the reverse direction. The
reverse direction is normally used only
momentarily to assist in unplugging.
o. Selector Valve:
This 3 position selector valve controls the
flow of oil to the cylinder to the pup unit.
Pull the lever out to supply pup. Push the
lever in to supply lead.
Hoist:
This spring-loaded to neutral centre 3
position hydraulic valve controls the flow
of oil to the hoist on the front of the frame.
Push the lever in and hold to lower the
hoist or box. Feather the valve while
lowering to reduce the shock loads
encountered when stopping suddenly. To
stop hoist movement, release the lever
and the centring spring will return it to its
centred neutral position. Pull the lever
and hold to raise the hoist and lift the box.
Release the lever for it to return to its
centred neutral position.
p. Manual Flow Control:
This manual flow control valve controls
the amount of oil flowing to the cross
auger. Set the pointer between 0 and 10
on the scale to adjust the speed ratio
between 0 and 100% of the available
speed.
r.
g. Cross Auger:
This 3 position hydraulic valve controls
the flow of oil to the cross auger. Push
the lever into stop the flow of oil and the
cross auger. Pull out to run the cross
auger.
h. Cross Auger Speed:
This flow control valve controls the
amount of oil flowing through the cross
auger drive circuit. Turn the knob clockwise (in) to close the valve and slow the
speed and counter-clockwise (out) to
increase the speed.
k.
Blower Pressure Gauge:
This pressure gauge monitors and displays the pressure in the air unload
system. Normally this pressure will range
from 8 to 10 psi (54 to 68 kPa).
m. Spotlight:
This 2 position toggle switch controls the
power to the rear working light. Move the
switch up to turn the light ON and down
for OFF.
36
Air Lock Access Cover (Airlock Slide):
This push pull rod sets the position of the
plate covering the airlock in the back
center of the box. Turn the handle as
required so it clears the frame and pull it
to slide the plate over and open the
airlock. Push in to cover and close the
airlock. Be sure the handle clears the
frame so the control box cover can be
closed.
4.6
CONTROLS (cont'd)
p. Manual Flow Control:
This manual flow control
valve controls the amount
of oil flowing to the cross
auger. Set the pointer
between 0 and 10 on the
scale to adjust the speed
ratio between 0 and 100%
of the available speed.
Fig. 4-14 FLOW CONTROL
r.
Airlock Slide Access
Cover:
This push pull rod sets the
position of the plate
covering the airlock in the
back center of the box.
Turn the handle as required so it clears the
frame and pull it to slide
the plate over and open
the airlock. Push in to
cover and close the
airlock. Be sure the
handle clears the frame so
the control box cover can
be closed.
Handle Opened
Airlock Slide Open
Fig. 4-15 AIRLOCK ACCESS
37
2. Divider Anchor Pins:
All the units can be equipped with one or
more dividers in the box to allow transport of
multiple materials. Each divider hangs on
pivot pins on the upper corners of the divider
and is anchored with pins in the lower corners. The center handle controls the position
of the anchor pins. Lift and latch the handle to
retract the anchor pins. Lower the handle to
extend the pins and anchor the divider. Be
sure the pins are aligned with the holes when
anchoring the divider. Step back from the
divider when retracting anchor pins to allow
the divider to move.
CAUTION
Handle Down
Maximum load to be
placed in front of load
divider is
6 tonne
53-17159-6
NOTE
When the anchor pins release,
the force from the material
behind the divider will move
the bottom of the divider into
the open area. Keep your feet
away from the divider to allow
it to move.
Handle Up
Fig. 4-16 ANCHOR PINS
38
4.6
CONTROLS (cont'd)
3. Cab Controls:
Each tractor or power unit must be
equipped with an auxiliary hydraulic system to provide pressurized
oil to operate the unit and blower to
supply pressurized air for unloading. Both systems are powered
through the dual PTO drive system
with the control box located in the
doorway to the left of the driver.
Each drive system is labelled.
Pull the yellow collar up and move
the red knob forward to engage the
PTO and drive the auxiliary system. Push down to disconnect the
drive and stop the system. The
front knob controls the hydraulic
system and the back one the air
pump. Most systems are not "live"
and cannot be engaged and
disengaged without depressing the
master clutch.
Fig. 4-17 PTO CONTROLS
NOTE
Put the truck transmission in
gear first to stop transmission
clash when engaging PTO.
Then shift transmission into
neutral again when PTO engaged.
4. Jumper Hose Y-Valve:
Each lead unit is designed with an air
discharge line at the right rear corner
that is used for air unloading. The line is
equipped with a valve that opens and
closes the line.
Closed
Move the lever at right angles to the line
to close the valve and parallel to the line
to open it.
Open
Fig. 4-18 JUMPER HOSE Y VALVE
39
4.7
MACHINE PLACEMENT
Each Bag/Bulk unit must be properly placed prior
to unloading to obtain the optimum performance.
When positioning the machine, follow this procedure:
1. Clear the area of bystanders, especially small children, before moving the
machine into position.
2. Inspect the parking or unloading
position to be sure the surface is firm
and level.
3. Drive the unit into its approximate
unloading position with the tractor and
trailer in a straight line and stop.
Correct
4. Do not position the unit on a surface
that is not level or is so soft that one
set of wheels can sink while the unit is
being unloaded.
Incorrect
IMPORTANT
Be sure the unit is on level
ground during positioning or
unloading to prevent tipping.
5. Do not position the unit where any
component will be closer than 30 feet
(10 m) to overhead power lines when
climbing on the unit, unloading or
raising the box.
Correct
Fig. 4-19 PLACEMENT
6. Set the parking brakes before dismounting.
7. Deflate air suspension if so equipped.
8. Lower stabilizer legs on the semi
trailer units. Be sure each leg is
sitting firmly on the surface.
Fig. 4-20 STABILIZER LEG (TYPICAL)
40
Incorrect
9. Rear Door:
a. Position the rear discharge door over
the conveyor or pit.
Discharge Door
b. Remove the sock from its stowed
position.
Sock Storage
c.
Mount and secure the sock over the
discharge door.
Sock Installed
Fig. 4-21 UNLOADING
41
10. Air Unload:
a. Position the unit next to the unloading
area.
b. Open the air line storage cabinet
and remove the required air lines.
Fig. 4-22 AIR LINE STORAGE
c.
Attach the male end to the
airlock outlet and secure with
anchor bolts.
NOTE
Coupling style may vary from
unit to unit.
Fig. 4-23 ANCHOR BOLTS
42
10. Air Unload (cont'd):
d. Attach the other end to the
storage facility fill pipe.
e. Open the roof covers. Stay
away from power lines.
Fig. 4-24 ATTACHED
DANGER
ELECTROCUTION HAZARD
To prevent serious injury or death from
electrocution:
• Stay away from power lines when
transporting and raising or lowering
truck box.
• Electrocution can occur without
contacting power lines.
11. Then proceed to Section 4.8
Operation for the unloading
procedure.
12. Reverse the above procedure
when unloading is finished and
unhooking the air lines.
Fig. 4-25 UNLOADING
43
4.8
OPERATION
OPERATING SAFETY
1. Read and understand all the Operator’s
Manual and all safety signs before operating
or adjusting the Walinga Bag/Bulk unit.
10. Clear the area of all bystanders, especially
children, before starting up and operating
the units.
2. Perform circle check before driving.
11. Make sure that all lights and reflectors that
are required by the local highways and
transport authorities are in place, clean and
can be seen clearly by all overtaking and
oncoming traffic.
3. Do not allow riders outside the cab during
road or highway travel.
4. Drive very carefully when negotiating hilly or
uneven terrain.
12. Do not operate unit with spring brakes
caged or brakes disabled. Block wheels if
unhooked.
5. Keep hands, feet, clothing and hair away
from all moving parts. Use special care
around open airlock and when next to
moving cross auger.
13. Before disconnecting the tractor from the
trailer unit(s) make sure that the tractor and
trailer are on level ground and that the trailer
wheels are securely blocked. Lower landing
gear and provide extra support if the ground
is soft. Deflate air ride if so equipped prior to
uncoupling.
6. Place all controls in neutral, disengage PTO
clutch, stop the engine, set park brake,
remove ignition key and wait for all moving
parts to stop before servicing, adjusting,
repairing or maintaining.
14. Do not unload unless all axles are on a firm
level surface.
7. Stay away from power lines when operating
hoist or climbing on top of the trailer. Electrocution can occur without direct contact.
15. Do not go under or within tipping arc of
trailer box frame when hoist is operating.
Keep others away.
8. Use care when climbing on ladder(s) and/or
platform(s) to prevent falling.
16. Review safety items with all personnel
annually.
9. Maintain running gear in good condition at all
times. In addition, on trailers, maintain
kingpin and fifth wheel assembly in good
condition.
Follow these operating procedures to obtain
maximum performance and long life:
1. Review and follow pre-operation inspection
and checklist before operating.
2. Review the location and function of all controls.
44
4.8
OPERATION (cont'd)
3. Loading Unit:
A. Preparation:
a. Be sure the inside of
the unit is clean to
prevent contaminating
the next load.
b. Close airlock slide.
c.
Install false gate, if so
equipped, over cross
auger if not required
or mount it in its upper
storage position.
Fig. 4-26 AUGER UPPER STORAGE POSITION
d. Install dividers at their
required position and
secure with upper
pivot and lower
anchor pins.
e. Open top covers.
Fig. 4-27 DIVIDER INSTALLED (TYPICAL)
f.
Be sure both rear main doors are
closed and latched on both the
top and bottom.
g. Be sure both PTO's are disengaged and in neutral.
Fig. 4-28 REAR MAIN DOORS
45
3. Loading Unit (cont'd):
B. Gravity/Conveyor Loading:
a. Drive the unit into position under the
hopper or conveyor.
b. Set park brakes.
c.
Open top covers.
Lids
Canvas
Fig. 4-29 COVERS
d. Start loading system and fill the unit.
e. Close and secure covers when unit
has been filled.
46
4.8
OPERATION (cont'd)
3. Loading Unit (cont'd):
C. Pneumatic Loading:
a. Drive the unit into position
next to the storage or feed
facility. Position to minimize the required length for
hose and to minimize the
need for elbows or sharp
turns.
b. Place all controls in neutral
or OFF.
c.
Remove flex jumper hose
from its stowed position
and install on side-mounted
airlock outlet. Secure with
anchor bolts.
Storage
IMPORTANT
On trucks and pups, raising the
front of the box 6 feet (2 m)
above the ground this allows
the flex jumper hose to form a
large arc between the airlock
and the box intake to minimize
restrictions.
d. Install and secure hose to
front inlet pipe of body.
e. Place switch valve in
suction, loading position.
Mounted
Fig. 4-30 JUMPER HOSES
f.
Be sure the
dust collector
has been
cleaned and
check that the
dust collector
lid is securely
closed.
Fig. 4-31 PNEUMATIC LOADING COMPONENTS
47
g. Be sure that the material screen
has been cleaned and has been
secured to the intake canister.
h. Connect the suction hose with
suction nozzle to the receiver inlet
and secure. Lay the suction
nozzle on top of the grain or feed
and open the air slide all the way.
i.
Be sure that at least one roof
lid is open or the tarp is open
part way to allow the body to
vent itself during loading.
j.
Engage PTOs and bring
engine to rated PTO RPM
(Refer to step #6 b "Engaging PTOs" for proper procedure).
k.
Start transfer airlock and run
at 65-75 RPM.
l.
Place suction nozzle into the
grain. Slowly close the air
slide until the hose/unit
begins to pulsate. Open air
slide until the pulsations
stop.
Fig. 4-32 MATERIAL SCREEN
Fig. 4-33 VENTING
48
4.8
OPERATION (cont'd)
3. Loading Unit (cont'd):
m. Do not place the suction nozzle
between your feet and draw material
from under you. Sufficient material
can be drawn into the nozzle to
submerge the operator. Submersion
in feed or grain can lead to suffocation.
DANGER
Do not place intake tube near feet
when standing on top of grain.
Sufficient material can be removed
to draw operator and intake tube
into grain. Submersion in grain can
cause suffocation.
Fig. 4-34 LOADING
n. Loading From Silo:
Never walk on top of the grain in a
silo when loading your trailer as the
grain is removed from the bottom, a
column of grain moves downward.
The downward movement of the grain
will actually draw you deeper into the
silo and you will be powerless to do
anything to save yourself. Suffocation
will take a matter of minutes. Keep
out of silo when unloading from the
bottom.
DANGER
Do not enter top of silo when unloading from the bottom to prevent
suffocation. Keep others out.
2
1
1 Unloading starts.
3
2 Trapped.
Grain flow
continues
downwards.
Surface and central
column of grain
moves downwards.
Fig. 4-35 SILO SUFFOCATION
49
3 Buried.
Suffocation
almost certain.
3. Loading Unit (cont'd):
C. Pneumatic Loading (cont'd):
m. Slow the blower as the box fills
to minimize crackage and
breakage of the material.
n. Remove intake nozzle from the
feed or grain and wait until all
the material has moved through
the machine.
o. Slow the engine to low idle and
disengage PTO clutch to the
blower.
p. Unhook and stow intake hose
and nozzle, receiver inlet and
flex jumper hose.
q. Lower box to the frame.
r.
Clean out dust collector.
Fig. 4-36 DUST COLLECTOR
IMPORTANT
Be sure to empty the dust
collector after each load. An
overfilled dust collector can
dislodge dust clumps into the
system causing a decrease in
system capacity and premature wear on key components.
s.
Close lid(s) or tarp prior to
moving.
t.
Retract the ram on the
switch valve cylinder to
prevent road salt or dirt
damage during transport.
Fig. 4-37 PUP LOADING
50
u. Attach the flex jumper hose to
the pup when loading the pup.
v.
Follow the same loading
instructions as for the truck
box.
w. Install and secure plugs into
the lines when the hoses and
lines have been removed and
stowed.
4. Transport to the unloading area.
5. Position the unit per Section 4.7. Stay
away from power lines and be sure the
unit is on firm level ground.
Fig. 4-38 LOADED
6. Starting:
a. Open control box door and place
all controls in neutral or OFF/STOP
position.
b. Engaging PTOs:
• Start engine and run at low idle
(1000 RPM or less).
• Depress clutch and shift
transmission into gear.
c.
•
Pull up on collar and move
levers forward.
•
Shift transmission into neutral.
•
Release clutch to start blower
and hydraulic pump.
Set engine speed at “speed posted
on the dash” to provide sufficient
oil flow to the hoist, airlock drive
motor and air flow to unload.
Fig. 4-39 PTO CLUTCH
d. Use hydraulic control
lever to start the airlock
if pneumatically unloading.
e. Open the slide over the
airlock if pneumatically
unloading.
f.
Refer to step 9 "Unloading" for the recommended unloading
procedure.
Fig. 4-40 CONTROLS
51
4.8
OPERATION (cont'd)
7. Stopping:
a. Close rear unload door or close slide
over airlock if pneumatically unloading.
b. Place all controls in OFF, neutral or
stop.
c.
Reduce engine speed to low idle.
d. Depress clutch and disengage PTO
.
Rear Door
Airlock Slide
Fig. 4-41 STOPPING
8. Emergency Stopping:
If an emergency occurs that
requires immediate machine
shut down, close rear unload
chute or close slide over airlock
to stop the unloading process.
Place all controls in OFF,
neutral or stop and disengage
PTO.
Fig. 4-42 PTO SWITCHES
52
9. Gravity Unloading:
a. Position the unit on a firm, level
surface with all axles on the
ground. On the semi units, be
sure the tractor is pointed
straight ahead. Do not position
the unit(s) where there are
overhead obstructions or near
overhead power lines.
b. Position the back of the unit
over an unloading pit or conveyor.
c.
Attach and secure sock over
rear discharge chute.
Fig. 4-43 PTO CONTROL
d. Engage PTO to the hydraulic pump and set engine
RPM at speed indicated on
the dash.
e. Exhaust the air from the air
suspension system if so
equipped.
f.
On the semi units, lower
the stabilizers if so
equipped on each side to
help support the unit.
g. Open the lids or roll tarp
cover.
h. Start conveyor or material
removal system.
i.
Fig. 4-44 CONTROL BOX (SEMI)
Open the rear discharge chute to start the
flow of material. Do not overload the
conveyor or receiving system.
Fig. 4-45 SOCK
53
4.8
j.
OPERATION (cont'd)
Raise the box slowly when the flow of
material out of the rear door stops. Raise
only enough to maintain an even flow of
material. Stay away from power lines.
DANGER
ELECTROCUTION HAZARD
To prevent serious injury or death from
electrocution:
• Stay away from power lines when
transporting and raising or lowering
truck box.
• Electrocution can occur without
contacting power lines.
k.
Start the cross auger
when the box is fully up
and the material has
stopped flowing. This will
clean out the corners and
bring the remaining
material to the center for
discharge. Use flow
divider in the control box
to set the speed of the
cross auger to evenly
bring the material to the
center for discharge.
l.
Stop conveyor or material
removal system, stop
cross auger and close rear
discharge door.
Raising
m. Feather the hoist valve to
slowly lower the box to the
frame.
IMPORTANT
Lowering the box rapidly and
then stopping suddenly will
cause large pressure spikes in
the hoist hydraulic system as
the box stops. Feathering the
valve carefully will minimize
the pressure spikes. This is
particularly important if the box
contains front compartments
that are full of material.
n. If there are not more
compartments to unload at Fig. 4-46 HOIST
this location, disengage
PTO, raise stabilizers and
stow discharge sock. Move
to new unloading location.
54
Raised
o. If your unit is equipped with dividers
forming additional compartments,
locate the unit for unloading as
described above (Steps a through g).
p. Enter box to release divider anchor
pins.
q. Stand back from the divider and pull
the handle up to release the lower
anchor pins.
NOTE
When the anchor pins release,
the force from the material
behind the divider will move
the bottom of the divider into
the open area. Keep your feet
away from the divider to allow
it to move.
r.
Repeat steps h through l to unload
the compartment.
s.
Repeat steps m through p for each
additional compartment.
t.
Remove and stow the dividers and
discharge sock when the unloading
has been completed.
Anchored
Released
Fig. 4-47 DIVIDER HANDLE
55
4.8
OPERATION (cont'd)
9. Pneumatic Unloading:
a. Position the unit on a
firm, level surface with all
axles on the ground. On
the semi units, be sure
the tractor is pointed
straight ahead. Do not
position the unit(s) where
there are overhead
obstructions or near
overhead power lines.
b. Position the unit to insure
only a minimum length of
hose is required and all
lines are routed as
straight as possible.
c.
Fig. 4-48 AIRLOCK OUTLET
Remove the delivery
hose from its stowed
position and attach to the
rear airlock outlet. Secure with the anchor
bolts.
d. Connect and secure the
delivery hose to the
pipes/hoses on the
storage bin or barn.
Check during operation to
be sure they are sealed,
secured and not leaking.
e. Place the switch valve in
the blowing, unloading
position.
Fig. 4-49 DUST COLLECTOR
f.
Be sure the dust collector
has been cleaned and
check that the dust
collector lid is opened.
g. Engage PTO clutches
and set the engine at
rated RPM (Refer to step
#6 b for engaging procedure.
h. Exhaust air from the air
suspensionsystem if so
equipped.
Fig. 4-50 PTO CONTROLS
56
i.
On the semi units, lower the
stabilizers on each side to help
support the frame.
Fig. 4-51 STABILIZERS
j.
Open the lids or roll tarp covers.
k.
Slowly open the airlock slide over
the rear airlock.
Control
Airlock Slide
Fig. 4-52 AIRLOCK
57
4.8
l.
OPERATION (cont'd)
Raise the box slowly when the flow of
material into the airlock stops. Raise only
enough to maintain an even flow of
material. Stay away from power lines.
DANGER
ELECTROCUTION HAZARD
To prevent serious injury or death from
electrocution:
• Stay away from power lines when
transporting and raising or lowering
truck box.
• Electrocution can occur without
contacting power lines.
m. Start the cross auger when the
box is fully up and the material
has stopped flowing. This will
clean out the corners and
bring the remaining material to
the center to move into the
airlock. Use flow divider in the
control box to set the speed of
the cross auger to evenly bring
the material to the center to
move into the airlock.
n. Wait for all the material to
move through the airlock and
into the barn or bin.
o. Close the cover over the
airlock.
Raising
p. Feather the hoist valve to
slowly lower the box to the
frame.
IMPORTANT
Lowering the box rapidly and then
stopping suddenly will cause large
pressure spikes in the hoist
hydraulic system as the box stops.
Feathering the valve carefully will
minimize the pressure spikes.
This is particularly important if the
box contains front compartments
that are full of material.
q. If there are not more compartments to unload at this
location, disengage PTO,
raise stabilizers, disconnect
air lines and stow in their
storage compartments.
Move to new unloading
location.
Raised
Fig. 4-53 HOIST
58
r.
If your unit is equipped with
dividers forming additional
compartments, locate the unit for
unloading as described above
(Steps a through g).
s.
Enter box to release divider
anchor pins.
t.
Stand back from the divider and
pull the handle up to release the
lower anchor pins.
NOTE
When the anchor pins release,
the force from the material
behind the divider will move
the bottom of the divider into
the open area. Keep your feet
away from the divider to allow
it to move.
Anchored
u. Repeat steps k through p to
unload the compartment.
v.
Repeat steps q through u for
each additional compartment.
w. Remove and stow the dividers
and air lines when the unloading
has been completed.
Released
Fig. 4-54 DIVIDER HANDLE
59
4.8
OPERATION (cont'd)
10. Maximum Pneumatic Loading Capacity:
The optimum loading capacity is set and
controlled by the operator using the intake
nozzle. In addition, raising the box a few feet
above the frame keeps the flex jumper hose in
a large arc with minimum material restrictions.
To set the capacity, follow this procedure:
a. Prepare the unit for operation.
Be sure the engine is running at
rated speed.
b. Close the air slide on the intake
nozzle.
c.
Push the nozzle into the grain or
material until the inlet is completely covered and the system
fills.
d. When the system fills with
material or grain, it will surge or
pulsate.
e. Open air slide slowly until
surging or pulsating stops.
f.
This will provide maximum
capacity for the system.
Intake Nozzle
Unit
Fig. 4-55 LOADING
60
11. Maximum Pneumatic Unloading Capacity:
The optimum unloading capacity is set and
controlled by the operator at the control panel.
The system moves the most material when
the air system pressure ranges between 8
and 10 psi (54 to 68 kPa). To set the capacity, follow this procedure:
a. Prepare the unit for operation.
Be sure the engine is running at
rated speed.
b. Start the rear airlock and run at
65-75 RPM.
c.
Slowly open the sliding cover
over the airlock.
d. Watch the air system pressure
gauge while opening the sliding
cover.
e. Stop moving the sliding cover
when the pressure in the air
system ranges between 8 and 10
psi (54 to 68 kPa). This nominal
pressure range will provide
maximum unloading capacity.
Pressure Gauge/Handle
Airlock Slide
Fig. 4-56 UNLOADING
61
4.8
OPERATION (cont'd)
12. Raising Hoist:
Each unit is equipped with a large multi-stage
hydraulic cylinder to raise the front of the box
for unloading. It is a simple system that
allows for simple, fast and convenient unloading. However, each operator must be aware
of the common sense rules that must be
followed when using the hoist.
a. Position unit on a
firm level surface
before raising hoist
or unloading. Soft
or uneven terrain
can result in frame
tipping when raising
hoist.
b. Do not raise hoist
unless there is a
firm level surface
under all tires and
each axle.
c.
On semi units,
position tractor and
trailer in a straight
line to provide
Fig. 4-57 RAISING HOIST
maximum stability
when raising hoist.
d. On semi units equipped with stabilizers,
lower stabilizer legs before raising hoist.
e. Do not go under or within tipping arc of
box frame when hoist is operating. Keep
others away.
f.
Do not raise hoist in high wind conditions.
Do not park unit with box in the raised
position.
o. Stay at controls while using the hoist or
unloading. Lower hoist immediately if
shifting or leaning of the box occurs.
h. Stay out of body compartment when
unloading, when cross auger is running
and when engine is running.
j.
l.
n. Have parking brakes set before raising
hoist.
g. Use care when on ladder or on top of unit
to prevent falling. Stay away from power
lines to prevent electrocution.
Lower box to the frame before releasing
the latches on the bottom of the divider(s).
Do not move unit unless box is fully down.
m. Do not use the cylinder as a stabilizer
when the hoist is raised. The cylinder is
strictly a lifting device and is not a structural member of the unit.
Stay away from power lines when raising
hoist. Electrocution can occur without
direct contact.
i.
k.
p. Feather the unit down slowly to avoid a
high-pressure build-up in the cylinder
when the box stops suddenly.
These instructions are posted next to the
control box to remind the operator of recommended procedures.
62
13. Unplugging - Pneumatic Loading:
If the unit plugs during the pneumatic loading
phase, follow this procedure to unplug:
a. Place all controls in neutral/OFF.
b. Disengage PTO clutches, stop engine,
remove ignition key and wait for all
moving parts to stop.
c.
Remove the intake jumper hose and tube
from the receiver unit.
d. Remove the material screen from the
receiver.
e. Remove the flex jumper hose from the
airlock output fitting.
f.
Clean out the receiver and the top and
bottom of the airlock.
System
NOTE
It may be helpful to start engine, engage
power and run the airlock momentarily in
reverse to dislodge any jammed material.
Do not place hands into airlock when it is
turning or running.
WARNING
ROTATING AIRLOCK BLADES HAZARD
KEEP AWAY
Airlock
Fig. 4-58 INTAKE SYSTEM
To prevent serious injury or death:
1. Place all controls in neutral, stop engine,
remove ignition key and wait for all moving
parts to stop before opening access door.
2. Close access door before operating.
3. Keep hands, feet, hair and clothing away from
moving parts.
g. Loosen bottom cover of dust collector and
remove all collected material.
h. Close and secure bottom cover.
i.
Install and secure material screen.
j.
Attach and secure flex jumper hose, inlet
fitting and intake hose.
Fig. 4-59 DUST COLLECTOR
63
4.8
OPERATION (cont'd)
14. Unplugging - Pneumatic Unloading:
If the unit plugs during the pneumatic unloading phase, follow this procedure to unplug:
a. Close airlock slide and lower box down
to the frame.
b. Place all controls in neutral/OFF.
c.
Disengage PTO clutches, stop engine,
remove ignition key and wait for all
moving parts to stop.
d. Remove the discharge hose from airlock.
e. Remove the material on top of the
airlock.
f.
Airlock - Top
Open airlock slide and remove material
from the top of the airlock.
g. Clean out the bottom of the airlock.
NOTE
It may be helpful to start engine, engage
power and run the airlock momentarily in
reverse to dislodge any jammed material.
Do not place hands into airlock when it is
turning or running.
WARNING
Airlock - Bottom
Fig. 4-60 UNLOADING
ROTATING AIRLOCK BLADES HAZARD
KEEP AWAY
To prevent serious injury or death:
1. Place all controls in neutral, stop engine,
remove ignition key and wait for all
moving parts to stop before opening
access door.
2. Close access door before operating.
3. Keep hands, feet, hair and clothing away
from moving parts.
h. Close airlock slide.
i.
Install and secure discharge hose.
Fig. 4-61 DUST COLLECTOR
64
15. Blowing Suggestions:
Follow these suggestions when using the
blower:
a. Never run the engine faster than the
maximum speed indicated in the cab.
b. Each application or place of delivery
will differ and this will determine the
required speed. The type of material
blown will determine it as well. Corn or
wheat require greater speed and
pressures when blown an equal distance compared to what mash or
crumbles will require. In other words
heavy feed or grain - greater engine/
blower speed - lighter feed or grain,
less engine blower speed.
c.
The condition and the size of the
Fig. 4-62 LOADING
delivery lines to the barn bin or tanks
also determine the required speed. If
these lines leak badly, more air is
needed to replace the wasted air and
therefore greater speed of the blower is
required. Too small a line to the bin, for
instance a 3" line, will slow the operation considerably. The recommended
size is 4" diameter. Too many elbows
will slow the operation. (General rule of
thumb: 1 elbow = 4 ft. of line).
d. To determine how fast the engine should
be running while unloading, this rule of
thumb may be used. After the unit has
been set up and has started blowing at
maximum speed with the slide as far open
as possible, slow the engine down until
the engine begins to labour or the delivery
hoses begin to pulsate. After this has
been achieved, increase RPM slightly to
allow unit to run smoothly.
16. Minimizing Breakage:
The breakage of pellets or crumbles can be
avoided by:
a. Slowing down the speed at which the
material is moved through pipes.
d. Pellets and crumbles should be pushed
through the pipes, not shot through them.
b. Having as few elbows as possible, and by
making the radius of the necessary bends
as smooth and as big as possible.
e. Remember that breakage increases as
the air and feed speed increases; not the
engine speed, but the speed at which the
pellets travel through the pipe.
c.
Keep the delivery hoses and pipes full of
feed and use a minimum of air. Result:
Very little breakage, dust or separation
and a satisfied customer.
f.
65
Obstructions in the line like screws to
fasten couplings to the pipe/hose dents in
the line and material build-up at elbows.
4.8
OPERATION (cont'd)
17. Operating Suggestions:
a. Use only fully trained operators at all times. Review
safety and operating instructions annually.
b. Position the unit on a firm
level surface to unload. Be
sure the tractor and trailer are
in a straight line for unloading
to provide maximum stability.
c.
Be sure all the axles are
supported by firm soil before
raising the hoist.
Fig. 4-63 UNLOADING
d. Stay away from
power lines when
raising the hoist
or climbing on the
top platform.
Electrocution can
occur without
direct contact.
DANGER
ELECTROCUTION HAZARD
To prevent serious injury or death from
electrocution:
• Stay away from power lines when
transporting and raising or lowering
truck box.
• Electrocution can occur without
contacting power lines.
66
e. Keep the air lines as short
as possible to minimize
air and friction losses.
f.
Do not kink air lines.
Route in large arcs to
eliminate abrupt changes
in direction.
Fig. 4-64 PNEUMATIC LOADING
g. Raise box a few feet above the frame
during pneumatic loading to prevent
kinking of flex jumper hose.
h. Always wear hearing protection when
around blower. Prolonged exposure to
high ambient noise can cause hearing
loss.
Fig. 4-65 HEARING PROTECTION
67
4.9
TRANSPORTING
Although all operating and transporting instructions are common sense, it is wise to review them
periodically to refresh your memory. Good operational procedures result in a safe workplace for
the operator and others.
4.9.1
OPERATING INSTRUCTIONS
Since this equipment can be used in a variety of
conditions, it is difficult to give instructions appropriate for all applications. However, these general
guidelines apply to all situations:
1. Be sure that the trailer is securely attached to
the towing vehicle and locked into position.
2. Be sure that the air, hydraulic and electrical
lines are securely connected and that they
have sufficient slack for turns.
3. Be sure that the brakes are properly adjusted
and in good working condition.
4. Be sure that the electrical harness is securely
attached and all lights and reflectors are clean
and operating.
5. Maintain the mud flaps in good condition to
minimize road splash in wet conditions.
6. Always maintain the unit in good mechanical
condition.
68
4.9
4.9.2
TRANSPORTING (cont'd)
BRAKING GUIDELINES
Safe, reliable and trouble-free operation of your
unit requires that the brakes be maintained in
good operating condition at all times and the
driver follows good application techniques when
driving. The irresponsible use of brakes by the
driver when traveling can contribute to low brake
life or result in system malfunctions, short life and
poor tire wear patterns. The following list summarizes some basic operational guidelines for the
driver.
1. Check the function of the brake system at the
start of each day.
10. Wet, icy or snow-packed surfaces require
special care. Make cautious, intermittent
applications by fanning or pumping the brakes
to reduce speed without skidding or locking
the wheels.
2. Maintain a safe vehicle speed at all times.
Slow down for rough road or slippery surface
conditions, winding roads or congested areas.
11. Use wheel chocks, apply trailer and tractor
parking brakes and place tractor in low gear
when parking the unit.
3. Always provide sufficient vehicle spacing on
the road to allow for a safe stopping distance.
4. Apply brakes gradually to produce an even
deceleration until the vehicle is stopped.
12. Maximum brake retarding occurs just before
the wheels lock up and the tires skid. Release the brakes should you feel them lock-up
and reapply them.
5. Watch traffic patterns ahead. Anticipate
pattern changes that could result in an emergency. Apply the brakes gradually in sufficient time to produce a controlled stop.
13. When trailer brakes are applied with hot
drums, it may result in a cracked drum. Allow
them to cool before reapplying the brakes.
6. Shift to a lower gear to use engine compression as the retarding force when going down
steep grades.
14. Fanning or repeated on-and-off applications
will use up the system air reserves. This
procedure is not recommended unless adverse road conditions are encountered. The
wasting of air reserves in this way could result
in insufficient application pressure should an
emergency arise.
7. Do not apply brakes for a long period of time
such as when traveling on a long downgrade.
The brakes will overheat. Instead, apply both
the tractor and trailer brakes for short periods
of time and the brakes have a chance to cool
between applications.
15. Hard or panic stops can overheat the linings
and drums. Overheating will cause brake
fade. Severe overheating and fade can result
in the complete loss of braking capability.
This will substantially reduce the expected life
of brakes.
8. Dry the brakes by applying them several times
after going through water.
9. Release the brakes just before going over
railroad tracks or other rough conditions. By
allowing the wheels to turn over rough road
surfaces, there will be no shock loads to the
brake system components or produce flat
spots on the tires.
69
4.9.3
TIRES
When operating the unit, it is the responsibility of
the driver to check the tires frequently. Inflation
pressures, wear patterns and matching are critical
parameters that must be monitored. The following
factors affect tire care:
1. Inspection frequency: Tires should always
be checked at the start of a day and twice
during the day or every 4 operating hours,
whichever comes first. It is also a good
practice to check the tires at each rest period
during the day. When a driver hears unusual
noise or experiences unusual handling characteristics, the first item to check is the tires.
Problems found early, during frequent tire
checks, can save more serious problems later
on. A sampling of typical abnormal wear
patterns are shown in the Maintenance
section along with their causes. Always
correct the cause of the tire wear problem
before proceeding.
2. Inflation pressure: Tires should always be
operated at their specified pressures. At their
specified pressures, the tire is designed to run
with the full width of the tread flat on the
contact surface. Operating at other than
specified pressures will change the tread
contact patterns and can dramatically shorten
tire life. In addition, the tires will run hotter
and can lead to blow-outs.
Check tire pressure when the tire is cold. A
hot tire can read as much as 20 psi higher
than a cold tire. If tires are over-inflated,
check for poor load distribution, uneven
surface contact, over-loading or poor operating conditions.
3. Tire matching: Do not mix ply types on the
same axle. Their operating characteristics are
different and will lead to uneven tire loading,
rapid tire wear and adverse handling characteristics. Matching also includes combining
tires that have the same amount of tread
remaining. A tire with more tread has a larger
rolling radius and will have to carry a higher
load. The best performance will be obtained
when the rolling radius is within 1/8" for all
tires on an axle.
70
4.10
OPTIONAL EQUIPMENT
The trailers can be equipped with
several options or attachments to
adapt it to special customer
requirements.
1. Selector Valve:
An air controlled selector
valve is available to direct the
air for loading or unloading the
unit.
Fig. 4-66 SELECTOR VALVE
2. Several types of compartment covers are
available. Select the style that best fits your
application.
Individual
Multiple Compartment Cover
Fig. 4-67 COVERS
71
4.10
OPTIONAL EQUIPMENT (cont'd)
3. Dust Collector Breather:
An optional breather valve
is for the side of the air
cleaner canister. When
opened, it will provide
sufficient air to operate the
pneumatic system.
Fig. 4-68 BREATHER
4. Suspension Systems:
A variety of types and styles of
running gear is available for use on
the trailer including air or mechanical suspensions. Select the type
that best suits your application.
Air
Mechanical
Fig. 4-69 SUSPENSION TYPES
72
5
SERVICE AND MAINTENANCE
5.1
Review the manual provided with the truck for
service and maintenance information.
5.1.1
This section provides information on daily and
periodical service and maintenance of the Trailer
unit. Follow these recommendations for safe and
dependable operation of the Trailer unit. Refer to
the safety section at the front of the operator's
manual for all applicable safe maintenance and
operating procedures.
SERVICE
FLUIDS AND LUBRICANTS
1. Grease:
Use an SAE multi-purpose lithium based
grease with extreme pressure (EP) characteristics.
2. Wheel Hub Oil:
a. Use an SAE 80W90 for normal temperature conditions (-10°F to 100°F ambients).
Be sure that all operators are familiar with the
operation and maintenance procedures and related
safety information contained in the operator's
manual.
b. Use an SAE 85W140 for hot temperature
conditions (100°F and hotter ambients).
MAINTENANCE SAFETY
c.
1. Read and understand all the information in the
Operator’s Manual regarding maintenance,
adjusting and servicing the Bag/Bulk unit.
2. Place all controls in neutral, disengage PTO
clutch, stop the engine, remove ignition key
and set the park brake before adjusting, servicing or maintaining any part of the Bag/Bulk unit.
3. Block or support the box before servicing or
maintaining any components on truck frame or
running gear.
4. Follow good shop practices:
- Keep service area clean and dry.
- Be sure electrical outlets and tools are
properly grounded.
- Use adequate light for the job at hand.
Use an SAE 30W motor oil for ambients
below -10°F.
Capacity: 1 pint (500 ml) approximately
3. Hydraulic Oil:
Refer to 5.1.3 for Hydraulic Oil Specifications.
4. Storing Lubricants:
Your unit can operate at top efficiency only if
clean lubricants are used. Use clean containers to handle all lubricants. Store them in an
area protected from dust, moisture and other
contaminants.
5.1.2
GREASING
Refer to Section 5.1.1 for recommended grease.
Use the Service Record checklist provided to
keep a record of all scheduled servicing.
5. Block wheels before de-activating brakes.
6. Maintain air system and brake components in
top condition at all times.
1. It is recommended that a hand-held grease gun
be used for greasing. An air-powered greasing
system can damage the seals on bearings and
lead to early failure.
7. Maintain fasteners in running gear systems at
their specified torque at all times.
8. Lower box to the frame, disconnect hydraulic
lines and relieve pressure before working on
hoist.
2. Wipe grease fitting with a clean cloth before
greasing, to avoid injecting dirt and grit.
3. Replace and repair broken fittings immediately.
9. Establish and maintain a Trailer Preventative
Maintenance (TPM) program on your equipment. Some jurisdictions require this program
and the maintenance of records on every
commercial vehicle on the road for future
reference.
4. If fittings will not take grease, remove and clean
thoroughly. Also clean lubricant passageway.
Replace fitting if necessary.
73
5.1
SERVICE (cont'd)
5.1.3
HYDRAULIC SYSTEM
1. Oil Specifications:
PUMP
MODEL
Min. Start-up
(No Load)
Minimum
Operating
Temperature
(Loaded)
Maximum
Operating
Temperature
P197
(PERMCO)
-16°C / 3°F
-2°C / 28°F
82°C / 180°F
P3100 / P5000/
DMD25-064
(PERMCO)
-16°C / 3°F
-10°C / 14°F
82°C / 180°F
a. All hydraulic systems will be filled with
Castrol HVI 32
b. Check with dealer or factory for oil requirements when using other oils or in
other temperature ranges.
2. System Operation:
a. Be sure your oil specifications meet or
exceed the pump manufacturer requirements.
h. Do not over speed the hydraulic pump, it
causes overheating of the hydraulic oil.
(Run the engine as shown on RPM tag on
dash).
b. Do not exceed starting and operating
temperatures as specified above.
c.
When operating a unit and the oil temperature is over 180°F (82°C), the pump
system must be shut down, or run slower
until the system cools down.
i.
d. If overheating persists, check the system
for possible causes (see Section 10.7).
e. Hydraulic oil filter must be changed before
the gauge needle is in red on 10 MICRON
return filters.
f.
Hydraulic oil should be checked regularly.
(Testing of oil is recommended once a
year).
g. Always maintain a proper level in the
hydraulic tank and keep oil clean.
74
Check vent filler cap and keep it clean.
6
TRAILER SERVICING INTERVALS
A standard servicing schedule on your
trailer unit is provided as a guide for your
convenience. In unusual or extreme
operating conditions, increase the
frequency or perform additional service
items to customize this schedule to your
application.
Refer to the Service Section of the truck
manual for truck servicing information.
A. Servicing:
8 Hours, Daily or 500 Miles
1. Drain moisture from air tanks
(use cables to open drain
valves).
Tank Drain
Valve
Fig. 6-1 DRAIN CABLE(S) (TYPICAL)
2. Check tire air pressure. Add
as required.
Fig. 6-2 TIRES (TYPICAL)
75
Weekly, 10 Days or 5000 Miles
1. Grease slack adjusters
(1 location each adjuster).
Fig. 6-3 SLACK ADJUSTER (TYPICAL)
2. Grease camshaft bearings
(1 location each camshaft).
IMPORTANT
Do not overgrease.
Fig. 6-4 CAMSHAFT BEARING
76
Weekly, 10 Days or 5000 Miles (cont'd)
3. Check wheel hub oil levels.
Schematic
Hub
Fig. 6-5 HUB OIL LEVEL
77
4. Retorque the following fasteners:
a. Brake/wheel end
system fasteners.
Refer to Section 8.8.
Manual Bearing Adjustment
a. Tighten to 200 ft-lbs.
b. Completely loosen.
c.
d.
Tighten to 50 ft-lbs.
Loosen 1/4 turn
Fig. 6-6 BRAKE/WHEEL END
b. Landing gear bolts.
1/2 in.
5/8 in.
115 ft. lbs.
220 ft. lbs.
Fig. 6-7 LANDING GEAR MOUNTING BOLTS
78
Weekly, 10 Days or 5000 Miles (cont'd)
c.
Retorque cast spoke wheel rim
nuts if so equipped.
Table 1 Recommended Wheel Bolt
Torque (Spoke Wheels)
Bolt Size
Ft-lbs Torque (Dry)
5/8" - 11
150 - 175
3/4" - 10
210 - 260
3 Spoke
5 Spoke
IMPORTANT
Do not over-torque fasteners.
Over-torquing can strip
threads, collapse spacers or
lead to other problems that
cause loose fasteners. Use
an accurate torque wrench
when tightening fasteners.
6 Spoke
Torquing Sequence
Wheel (Typical)
Fig. 6-8 CAST WHEEL RIM NUTS
79
Weekly, 10 Days or 5000 Miles
(cont'd)
d. Retorque for stud pilot
inner and outer wheel
nuts if so equipped.
Table 2 Recommended Wheel
Stud Torque (Disc Wheels)
Stud
Size
Wheel
Type
Ft-lbs
Torque
(Dry)
3/4" - 16
Disc
450 - 500
1-1/8" - 16
Disc
450 - 500
15/16 - 12
Disc
750 - 900
1-5/16 - 12
Disc
750 - 900
Inner Schematic (Typical)
390 - 440
Bud
Unimount
10
WHD-8
400 - 600
Outer
Fig. 6-9 10 STUD WHEEL NUTS
e. Retorque hub piloted
wheel single nuts if so
equipped.
Table 3 Recommended Wheel
Stud Torque
Stud
Size
Ft-lbs
Torque
(Oiled)
M22 x 1.5
(33 mm or 1-1/2 Hex)
450 - 500
M20 x 1.5
(30 mm Hex)
280 - 330
Fastener Schematic
IMPORTANT
Do not over-torque fasteners. Over-torquing can
strip threads, collapse
spacers or lead to other
problems that cause loose
fasteners. Use an accurate torque wrench when
tightening fasteners.
Wheel
Fig. 6-10 SINGLE NUTS
80
Weekly, 10 Days or 5000 Miles (cont'd)
f.
Retorque suspension system fasteners. (Refer to charts for torque levels
in Maintenance Section 8.1.
Air
Mechanical
Fig. 6-11 SUSPENSION SYSTEM U-BOLTS
81
10,000 Miles (15,000 km) or Monthly
1. Grease landing gear bearings.
Right Side
Left Side
Fig. 6-12 LANDING GEAR
2. Retorque landing gear and suspension.
a. Landing gear.
b. Torque mechanical system suspension (refer to Section 8.1).
Fig. 6-13 MECHANICAL SUSPENSION SYSTEM
82
25,000 Miles (40,000 km), Quarterly or Every 3 Months
1. Check condition of wheel ends.
Release brakes, jack up the axle
and spin the wheel. Check:
a.
b.
c.
d.
Wheel bearings.
Wobble.
Rims and tires.
Brake drag.
Fig. 6-14 WHEEL END
2. Inspect frame and
structure for bends,
distortions or cracks.
a. Kingpin.
b. Fifth wheel and mounts.
c. Longitudinal and
transverse frames.
d. Compartment structure.
e. Unloading system
structure.
f. Suspension system
anchorage.
g. Axles.
h. Optional Accessories
i. Side Covers
ii. Top Covers
Fig. 6-15 TRAILER (TYPICAL)
3. Inspect electrical system
components for:
a.
b.
c.
d.
e.
Binding.
Rubbing/abrasion.
Looseness/dangling.
Cracks/tears in harness.
Burned out lights.
Fig. 6-16 ELECTRICAL (TYPICAL)
83
4. Inspect air system and
components for:
a. Leakage by performing leak-down test.
b. Rubbing/abrading.
c.
Cracked hoses.
Fig. 6-17 AIR SYSTEM (TYPICAL)
5. Clean gladhand screens
if so equipped.
Fig. 6-18 SCREENS
6. Check brake lining
thickness. Replace as required.
Fig. 6-19 BRAKE LINING
84
100,000 Miles (150,000 km) or Annually
1. Reline brakes as required.
Fig. 6-20 BRAKES
2. Change oil in hubs.
Fig. 6-21 HUB OIL (TYPICAL)
85
6.1
SERVICE RECORD SUMMARY (LUBRICATION)
LOCATION
DESCRIPTION
FREQUENCY
LUBRICANT
Fifth wheel.
Coat pivot pins
and lock
Coat bearing surface.
Daily or as needed.
Chassis grease.*
Landing gear
Gearbox and screws.
Periodic basis (weekly).
Chassis grease.*
Wheels
Check oil level.
Weekly, 10 Days or 5000 m
(8000 km)
Bearings.
25,000 miles (40,000 km).
SAE 80W90 gear oil.
Change oil.
100,000 miles (150,000 km).
SAE 80W90 gear oil.
Camshaft bearing
Lubricate
5,000 miles (8,000 km)
or monthly.
Chassis grease.*
Slack adjuster
Lubricate
5,000 miles (8,000 km)
or monthly.
Chassis grease.*
Brake shoe anchor
pin bushing
Lubricate
30,000 miles (50,000 km) or
yearly.
Chassis grease.*
Brakes
As appropriate.
Also at brake reline.
* Use a good quality lithium based extreme pressure grease throughout.
MIL-G-25013C in below -40°F.
NOTE: Do not use excessive lubricant.
86
7
UNLOADING SYSTEM SERVICING
7.1
SERVICING INTERVALS
A standard servicing schedule on your
trailer unit is provided as a guide for your
convenience. In unusual or extreme
operating conditions, increase the frequency or perform additional service items
to customize this schedule to your application.
Refer to the Service Section of the truck
manual for truck servicing information.
A. Servicing:
Daily, 8 Hours or 500 Miles
1. Check hydraulic system filter.
Fig. 7-1 HYDRAULIC SYSTEM FILTER
2. Check oil level in
blower front and rear
reservoirs.
Schematic
Unit
Fig. 7-2 BLOWER
87
Weekly, 10 Days or 5000 Miles
1. Grease PTO shaft to the
blower.
Fig. 7-3 PTO SHAFT
2. Grease the hoist.
a. Upper anchor pin (1 location).
Upper
b. Lower anchor pin (2 locations).
Lower
Fig. 7-4 HOIST PINS
88
Weekly, 10 Days or 5000 Miles
(cont'd)
3. Grease rear box hinges (2
locations).
Left
Right
Fig. 7-5 BOX HINGES (TYPICAL)
4. Grease rear doors, locks and bushings
(16 locations).
Fig. 7-6 REAR DOORS
89
Weekly, 10 Days or 5000 Miles
(cont'd)
5. Grease roof hatch lock and
bushings (4 locations).
Fig. 7-7 ROOF HATCH LOCK
6. Grease pup hitch
ball.
Fig. 7-8 PUP HITCH BALL
90
Bi-Monthly, 2 Weeks or
10,000 Miles
1. Grease cross auger bearings
(2 locations).
Driven End
Fig. 7-9 CROSS AUGER
2. Check oil level in hydraulic
tank.
NOTE
Always check oil level when
the oil is cold and the box is
fully down. Oil should be no
less than 1-1/2 inches
below level plug.
Fig. 7-10 HYDRAULIC TANK (TYPICAL)
91
20,000 Miles (45,000 km) or Monthly
1. Change oil in
the blower
reservoirs.
Use only
Walinga #9813813-6.
Schematic
Unit
Fig. 7-11 BLOWER
92
2. Check air lock tip
clearance.
Front
Rear
Fig. 7-12 TIP CLEARANCE
93
100,000 Miles (150,000 km) or Annually
1. Change hydraulic system
oil.
Fig. 7-13 DRAIN PLUG
2. Change hydraulic system
filter.
Fig. 7-14 FILTER
94
7.2
SERVICE RECORD
See Lubrication and Maintenance sections for details of service. Copy this page to continue record. Use
Walinga #98-13813-6 for Blower. Hydraulic Oil use: Hydrex XV.
ACTION CODE:
L LUBRICATE
C CHANGE
š CHECK
HOURS
SERVICED
BY
MAINTENANCE
8 Hours, Daily or 500 Miles
š Hydraulic System Filter
š Oil Level in Blower Reservoirs
Front & Rear
Weekly, 10 Days or 5000 Miles
L PTO Shaft to the Blower
L Hoist
Upper Anchor Pin (1)
Lower Anchor Pin (2)
L Rear Box Hinges (2)
L Rear Doors, Locks & Bushings
L Roof Hatch Lock & Bushings
L Pup Hitch Ball
L Hoist
Bi-Monthly, 2 Weeks or
10,000 Miles
L Cross Auger Bearings (2)
š Oil Level in Hydraulic Tank
20,000 Miles or Monthly
C Oil in Blower Reservoirs
š Air Lock Tip Clearance
100,000 Miles or Annually
C Hydraulic System Oil
C Hydraulic System Filter
95
8
PERIODIC MAINTENANCE AND ADJUSTMENTS
MAINTENANCE SAFETY
1. Read and understand all the information in the
Operator’s Manual regarding maintenance,
adjusting and servicing the Bulk Feed unit.
2. Place all controls in neutral, disengage PTO
clutch, stop the engine, remove ignition key
and set the park brake before adjusting,
servicing or maintaining any part of the Bulk
Feed unit.
3. Follow good shop practices:
- Keep service area clean and dry.
- Be sure electrical outlets and tools are
properly grounded.
- Use adequate light for the job at hand.
Your trailer can only operate at top efficiency
when it is maintained in good operating condition. The maintenance procedures are summarized from the component manufacturers instructions included with this manual. Only standard
industry and component procedures are required
to keep your trailer in top condition. All maintenance intervals are established for normal
operating conditions. In light or intermittent
conditions, the servicing and maintenance
intervals can be extended. In heavy, extended or
severe off-highway application, reduce the
intervals for servicing and maintenance to keep
the equipment in good condition. When a problem is found, correct the condition before continuing.
A good maintenance program will find conditions
early when they are easily and quickly corrected
before they become major problems. Operating
your trailer in a defective condition, can lead to
serious mechanical problems or can create
safety hazards for the driver, bystanders or other
operators.
4. Block wheels before de-activating brakes.
5. Maintain air system and brake components in
top condition at all times.
6. Maintain fasteners in running gear systems at
their specified torque at all times.
7. Establish and maintain a Trailer Preventative
Maintenance (TPM) program on your equipment. Some jurisdictions require this program
and the maintenance of records on every
commercial vehicle on the road for future
reference.
8.1
TORQUE SPECIFICATION SUMMARY
Table 1 Recommended Torque Specifications
1. Air Ride Suspension
Description
Size
Torque
Quik-Align™Pivot Bolt
7/8"-9
475-525 Ft. Lbs
Shock Bolt
3/4"-10
150-175 Ft. Lbs.
Air Spring Bolt (Lower)
1/2"-13
25-35 Ft. Lbs.
Air Spring Nut (Upper)
3/4"-16
45-55 Ft. Lbs.
Brake Dust Shield Bolt
5/16"-18
160-180 In. Lbs.
ABS Bracket Bolt
1/4"-20
75-100 In. Lbs.
96
Table 1 Recommended Torque Specifications (cont'd)
2. Mechanical Suspension
Description
Size
Torque
Ft. Lbs.
N.m
1-1/4" Nut
Equalizer Shaft (All Spread)
3/4" Capscrew
49" Spread
2-1/2" Nut
54"-65-1/2" Spread
1-1/2" Nut
72"-109" Spread
575-625
200-225
300-325
200-225
780-850
270-305
410-445
270-305
U-Bolt Nuts
300-325
410-445
1"
160-200
216-270
Torque Arm Clamping Nuts
1/2"
3/4"
80
175-200
110
236-270
Spring Retainer Nuts
1/2"
80
110
Torque Arm Bolt Nuts
3. Wheel End Components
Torque Range
(lb-ft)
N.m
Description
1.
2.
3.
4.
5.
6.
7.
8.
9.
10-15
15-20
Tighten to 200,
loosen, tighten
to 50, loosen
1/4 turn and
check end play
Jam nut - manual bearing adjustment
250-300
Brake mounting bolt
130-165
Two-piece dust shield bolts (shown)
• Forged spider
15-20
Bolt-on bushing bolts
25-35
Cam bushing bolts
25-35
80-125
Air chamber nuts
Hub-cap bolts
Hub fill plug
Adjustment nut - manual bearing
adjustment (double nut)
Fastener
Size
13-20
20-27
136
68
5/16"
3/8"
Size depends on axle model
and adjustment method.
340-408
177-224
5/8"
20-27
34-48
34-48
109-170
3/8"
3/8"
3/8"
5/8"
4. Wheel Nut
Stud Size
Wheel Type
Ft-lbs Torque
(Dry)
3/4" - 16
Disc
450 - 500
1-1/8" - 16
Disc
450 - 500
Bud Unimount 10
390 - 440
WHD-8
400 - 600
97
Bolt Size
Ft-lbs Torque (Dry)
5/8" - 11
150 - 175
3/4" - 10
210 - 260
8.2
KINGPIN AND FIFTH WHEEL PLATE
The kingpin at the front of the trailer is the structural component used to transmit accelerating and
decelerating loads into the trailer frame. It must
be in good condition to perform as required.
Visually inspect the kingpin as part of
the pre-trip inspection, at 5,000 miles
(8,000 km) or weekly and annually as
part of your normal preventative
maintenance program. Be sure the
kingpin does not have excessive wear,
looseness, chipped out areas, cracks
or bent mounting frame. If any kingpin
shows such defects, it should be
replaced immediately.
Fig. 8-1 KINGPIN
Visually inspect the frame and structure for bends,
cracks or distortions as part of the pre-trip inspection procedure. Thoroughly inspect the structural
integrity of the assembly every 25,000 miles
(40,000 km) or every three months as part of your
preventative maintenance program. Replace the
entire assembly if any structural defects are
found.
98
8.3
FIFTH WHEEL
A fifth wheel system is used
on the towing tractor to
secure the kingpin and carry
the weight of the attached
trailer. It must be maintained
in good condition to perform
as intended.
Visually inspect the fifth
wheel as part of the pre-trip
inspection to check for
cracks, bends, chips or
distortions of the frame and
upper plate.
NOTE
Fig. 8-2 FIFTH WHEEL
Use a high-pressure washer
or steam cleaner to remove
all the dirt and grease from
the fifth wheel assembly prior
to each weekly inspection.
Apply a fresh coat of grease
to the fifth wheel assembly
prior to hooking-up the
trailer.
Clean the assembly every 5,000 miles (8,000 km)
or bi-monthly and annually to perform a thorough
inspection. Check the frame and upper plate for
cracks, bends, chips or distortions.
When the components are clean, check that the
lock closes completely around the kingpin.
To adjust the lock:
1. Obtain a Holland kingpin lock tester
and place in the throat of the lock.
Close the lock.
2. The jaws should be snug around the
tester but not binding.
3. Use the adjusting nut on the front
edge of the fifth wheel to set the
clearance of the jaws.
4. Use a light oil to lubricate all moving
parts prior to returning to service.
Fig. 8-3 KINGPIN LOCK
99
8.4
AXLE ALIGNMENT
A standard axle is used as the main transverse
structural member to transmit loads between the
trailer frame and the surface contacting components. All running gear components are attached
to or form part of the axle assembly.
Although there is very little that can go wrong with
the axle itself, loose, bent or damaged attaching
components can cause the axle to go out of
alignment. This misalignment will be found during
the regularly scheduled 25,000 mile inspection.
However, axle misalignment shows itself most
commonly by accelerated tire wear and
dogtracking by the trailer. Visually check the tire
wear when checking air pressure. The driver
should identify these handling characteristics to
service personnel for correction.
To check axle alignment, follow this procedure:
1. Select a working area that is level, with a
compacted surface and is large enough to
provide access from all sides.
2. Move the trailer forward and backward several
times to remove any binding from the components.
3. Stop the trailer when moving in the forward
direction without using trailer brakes. This will
give the components a forward bias with no
binding.
4. Unhook the trailer and support on the landing
gear at the normal height or parallel to the
ground.
5. Install a commercially available axle extender
on each axle or remove the wheels to prevent
any components from interfering with the
measurements.
100
6. Attach an S hook to a steel
tape and measure the distance
between the kingpin and the
end of each axle. Dimensions
A and B should be equal within
± 1/8 inch (0.125 in) (3.1 mm).
7. Adjust the suspension mounting system as required to set
dimension A and B within 1/8
inch (0.125 in) (3.1 mm).
Refer to suspension system
instruction brochure for detailed adjustment procedure.
Fig. 8-4 AXLE DIMENSIONS
8. Use a trammel bar to measure the road and
curbside dimensions between the first and
second axles. Dimensions C and D should be
within 1/16 inch (0.0625 in) (1.6 mm).
Fig. 8-5 TRAMMEL BAR
9. Adjust the suspension system as required to
set this dimension to its recommended tolerance.
10. Repeat measuring and adjustment procedure
on the third axle if so equipped.
11. Tighten all fasteners to their specified torque.
Do not allow any suspension system or
running gear fasteners to loosen.
IMPORTANT
Always use a torque wrench when
tightening fasteners. The correct
torque on a fastener provides the
proper clamping force on the
adjacent components and they will
perform as expected.
12. The front axle must be aligned to the kingpin
with second and third axles adjusted to the
front axle.
13. Always check axle alignment after repairing
the suspension system.
Fig. 8-6 ALIGNED
101
8.5
WHEEL HUBS/BEARINGS
Some axles use an oil bath design for lubricating
wheel bearings. It is a virtual zero maintenance
system providing that the oil remains in the hub.
Visually check the hub every day for leaks when
checking tire pressure during pre-trip, daily,
refueling, or rest stop inspections. If oil leaks are
detected on any hub, repair the leak and refill the
hub before proceeding.
A. Oil Leaks:
Visually inspect the hub for leaks
every time the tire pressures are
checked. Leaks will normally be
visible as dust collects on the
escaping oil. Stop and correct the
leak immediately to prevent running
the hub low on oil. Running low or
without oil will quickly overheat the
hub and cause the bearings to
seize. Change the oil in the hub
when installing new seals to correct
a leak.
B. Oil Level:
1. Check the oil level in each
wheel hub every 5,000 miles
(8,000 km) or weekly and
whenever an oil leak is found.
Clean the end plate of the hub
to remove the dust, dirt or mud
build-up.
Hub
The oil should be visible to the
top of the outer concentric circle
of the end cap. Add oil as
required through the fill plug in
the hub. Always use clean oil
and prevent contaminants from
entering the hub when adding
or changing oil.
Schematic
Fig. 8-7 OIL LEVEL
2. Change the oil every 100,000 miles
(160,000 km), annually or whenever the
axle nuts are retorqued or the brakes are
relined. The hub cavities must be opened
when retorquing axle nuts and changing
oil should be done as part of the procedure.
102
C. Wheel Bearings:
Wheel bearings carry and transmit the load
between the wheels and the axles. In addition
to proper lubrication, the bearings must have the
recommended end play to perform as expected.
Bearing end play is set and controlled by the
torque of the axle nuts on the end of each
spindle. Each hub must seat securely on its
bearings to prevent wobble or slop in the system. Turning the wheel or wobbling it indicates
the condition and tightness of the hub/bearing
assembly.
1. Turning/Wobble:
a. Park the trailer on a level, hard surface
and release the brakes.
b. Place chocks in front of
and behind each wheel.
c.
Jack each axle up until
the tire clears the
ground.
d. Support the axle on a
safety stand to prevent
slipping or tipping.
e. Turning the wheel slowly
to check the condition of
the bearings and to
determine if the brakes
are dragging.
Fig. 8-8 WHEELS
f.
Dragging Brakes: Can be felt as a
steady drag on the turning of the
wheel or at the same position or arc
of the rotation. Adjust the brakes to
eliminate the drag before resuming
work.
h. Wobble: Grasp each side of the
wheel or tire and wiggle the wheel
and assembly. If the wheel or hub
wobble on the spindle, the bearings
have lost their end play and the axle
nuts require tightening.
NOTE
g. Bearing Condition: Can be felt as
the wheel turns. Bearings in good
condition turn easily and smoothly.
Bearings in poor or bad condition can
be felt through the wheels as scraping, grinding, dragging or bumps.
Replace bearings before resuming
work.
If the bearings are not in good
condition, replace them before
setting the end play.
103
8.5
WHEEL HUBS/BEARINGS (cont'd)
C. Wheel Bearings (cont'd):
2. Bearing End Play:
a. Place a pan under
the hub drain plug.
b. Remove the drain
plug from the hub
and drain the oil.
c. Remove the hub end
plate and lay to the
side.
d. Remove the set
screw from the jam
nut.
e. Remove the jam nut
and perforated lock
washer from the
spindle.
f. Use a torque wrench
to tighten the adjusting nut 200 ft-lbs.
(136 N.m) while
rotating the wheel
assembly in both
directions.
g. Back the adjusting
nut off to zero
torque.
h. Retorque the adjusting nut again to 50
ft-lbs (68 N.m) of
torque while rotating
the wheel assembly
in both directions.
i. Loosen the nut 1/4
turn.
j. Install the perforated
lock washer. Be
sure the adjusting
nut pin aligns with
the hole in the lock
washer. Turn
washer over and/or
adjusting parts as
required.
k. Install jam nut and
tighten to 250-300 ftlbs. (340-408 N.m).
ITEM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
DESCRIPTION
Capscrew
Lockwasher
Hub cap
Gasket
Wheel bearing jam nut
Lockwasher
Wheel bearing adjusting nut
Cone outer wheel bearing
Cup - bearing outer
Brake drum
Cup - bearing inner
Cone - bearing inner
Seal wheel-bearing
Bushing anchor pin
Pin anchor
Beam axle
Camshaft (left)
Camshaft (right)
Washer
Seal
Bushing
Fig. 8-9 SPINDLE COMPONENTS
104
ITEM
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
DESCRIPTION
Snap ring
Capscrew
Air chamber
Lockwasher
Locknut
Camshaft bushing assembly
Capscrew
Washer slack adjuster
Locknut - slack adjuster
Automatic slack adjuster
Washer slack adjuster
Snap ring slack adjuster
Spring - brake shoe return
Brake show and lining assy.
Spring - brake shoe retaining
Retainer - brake shoe roller
Roller - brake shoe
Pin - shoe return spring
Dust shield
Hub
l.
Check bearing end play by:
i. Attaching a magnetic base
dial gauge indicator to the
end of the spindle.
ii.
Push the wheel in while
rotating the wheel slightly
until the dial gauge reading
doesn't change.
iii. Zero dial gauge.
iv. Pull wheel assembly out
while rotating wheel slightly
until dial reading doesn't
change.
v.
In
Dial indicator will read
bearing end play.
vi. If end play does not register
between .001-.005 inches
(0.025-.125 mm), readjust
end play.
vii. Replace components if
readjusting does not give
end play tolerance within
specs.
m. Install a new gasket on hub face
cap.
n. Install hub face cap and tighten
mounting cap screws to their
specified torque.
Out
Fig. 8-10 DIAL INDICATOR
o. Add the specified amount of oil
to the hub and secure fill plug. Check
for leaks. Correct leaks before
resuming operation.
p. Remove safety stand from under axle
and lower wheel to the ground.
q. Repeat checks on all other axles.
105
8.6
1. Disc Wheels (Stud Pilot Style):
a. Mount single or inner dual wheel on hub.
Be careful not to damage the threads on
any of the studs.
b. Snug the nuts up in the alternating sequence shown to center it on the hub and
insure an even contact between the wheel
and hub.
WHEELS
A variety of steel or aluminum wheels can be used
on the trailer depending on customer preference
or application requirements. Wheels must be
maintained in good condition and all fasteners
tightened to their specified torque level to obtain
the expected life and performance.
IMPORTANT
Loose fasteners are the most common cause of
wheel problems on a trailer. Always retorque the
wheel fasteners per the break-in schedule of 100,
500, 1500 and 5,000 miles (160, 800, 2500 and
8000 km) when the unit is new and after a wheel
has been removed. Always use an accurate
calibrated torque wrench when tightening fasteners. A loose fastener is defined as one that is not
tightened to its specified torque. A loose fastener
does not provide the required clamping, anchoring
or holding forces to stabilize the adjacent components. Insufficient clamping forces can lead to
flexing, bending, cracking, hole elongation or
other component deterioration that cause failures
and/or accidents. Always keep fasteners tightened to their specified torque. Over-torquing can
overload certain components, causing compression cracks and strip nuts or studs. Over-torquing
fasteners can be as detrimental as undertorquing. Always tighten fasteners to their specified torque.
Left-hand threads are used on
the left side of the vehicle. Righthand threads on right.
c.
Tighten nuts to their specified torque
using the same alternating sequence.
d. Mount outer dual. Do not damage the
threads when sliding the wheel over the
studs.
e. Snug up the nuts in the alternating sequence shown to center it on the hub and
to provide even contact.
f. Tighten the outer wheel nuts to their
specified torque.
IMPORTANT
When retorquing inner nuts of
double nut design, always back
off outer nut several turns, then
retorque them.
Table 2 Recommended Wheel Stud Torque
(Disc Wheels)
Use an accurate torque wrench to retorque wheel
fasteners every 10,000 miles (15,000 km) or
monthly whichever comes first. Always retorque
wheels per the break-in schedule whenever a
wheel is removed and remounted.
Always follow the recommended mounting procedure when installing wheels to the trailer.
6 Stud
STUD PILOTED
Stud Size
Wheel Type
Ft-lbs
Torque (Dry)
3/4"-16
Disc
450 - 500
1-1/8"-16
Disc
450 - 500
15/16-12
Disc
750 - 900
1-5/16-12
Disc
750 - 900
Bud Unimount 10
390 - 440
WHD-8
400 - 600
10 Stud
Fig. 8-11 NUT TORQUE SEQUENCE
106
2. Hub Piloted Wheels:
a. Mount inner wheel on the hub.
b. Slide on the hub guide until the wheel is
snug against the hub. Be careful not to
damage the threads on any of the studs.
c.
Mount outer dual wheel on the hub and
snug up against the inner wheel.
NOTE
Add a drop or 2 of oil on the end
of the bolt, threads and the nuts
and flanges.
8 Stud
d. Install nuts and tighten in alternate
sequence shown.
Table 3 Recommended Wheel Bolt Torque
Stud
Size
Ft-lbs
Torque
(Oiled)
M22 x 1.5
(33 mm or 1-1/2 Hex)
450 - 500
M20 x 1.5
(30 mm Hex)
280 - 330
10 Stud
Fig. 8-12 HUB PILOTED
IMPORTANT
3. Rim/Wheel (Cast Spoke):
a. Inspect and clean all the parts. Replace
any damaged components.
Do not over-torque fasteners.
Over-torquing can strip threads,
collapse spacers or lead to other
problems that cause loose fasteners. Use an accurate torque
wrench when tightening fasteners.
b. Place rims and spacer band on wheel.
Be sure to space valve stem between
spokes.
c.
Secure clamps evenly in position.
d. Snug up the nuts in the alternating
sequence shown to allow the inside
rim to seat itself on the mounting
bevel and avoid wheel wobble.
e. Tighten the nuts evenly in small
increments in the shown alternating
sequence until all nuts are tightened
to their specified torque.
f.
3 Spoke
5 Spoke
Check for runout and redo if necessary.
Table 4 Recommended Wheel Bolt
Torque (Spoke Wheels)
Bolt Size
5/8" - 11
Ft-lbs Torque (Dry)
150 - 175
3/4" - 10
210 - 260
6 Spoke
Fig. 8-13 RIM/WHEEL TORQUE SEQUENCE
107
8.7
TIRES
Tires are one of the most important components
on a trailer and must be maintained in top condition to obtain their desired load carrying capacity
and durability. Tire wear rate can be used as an
indicator of the condition of the axle alignment or
suspension system. Poorly maintained tires will
wear rapidly or deteriorate and fail quickly and
suddenly. A poorly maintained tire can and will
affect adjacent components leading to their
potential failure as well.
Proper tire maintenance includes but is not limited
to:
a. Underinflation:
Operating at lower than the specified
pressure is a tire's worst enemy. Use an
accurate tire pressure gauge to check the
pressure at the start of each working day,
every few hours during the day and/or
whenever the handling characteristics
change suddenly. Underinflation will
increase tread wear and cause a deterioration of the tire body leading to a separation of the tread from the body. An
underinflated tire is soft and deflects more
than it should causing fatigue cracks or
breaks in the body cord construction
leading to sudden air loss.
1. Inflation Pressure:
Operating at an incorrect inflation pressure is
the most common maintenance problem with
tires. Tires should be checked frequently to
be sure they are at their specified pressure.
It is recommended that tire pressure be
checked at the start of each working day and
at least one other time during the day. Always
use an accurate hand gauge when checking
the pressure and check each tire. Carry it
with your unit so it is always available when
needed. Best time to take tire pressure is
when tire is cold. Every tire has its specified
operating pressure molded into the sidewall.
Adjust the pressure as required to obtain the
specified inflation pressure when the tire is
cold.
Operation with a low or flat tire on a dual
will generate a lot of heat in the
underinflated tire from internal friction that
it can and will disintegrate or catch on fire.
It also causes overloading of the adjacent
tire on the axle or axles and could lead to
their failure also.
Tire pressure will normally increase 10 to 15
psi during operation as the tire heats up. If
the pressure exceeds this normal increase, it
indicates the tire may be overloaded,
underinflated, driven too fast, improperly sized
or a combination of these factors. Identify the
cause of the problem and correct it before
resuming work.
b. Overinflation:
Inflating a tire over its specified pressure
can lead to serious problems also.
Overinflation creates a more rigid tire that
does not absorb road shocks as well as it
should. Shock loading from impacting
bumps or pot holes can break the fabric of
the tire and/or transmit the higher loads
into the rim, wheel and adjacent components causing them to fail as well.
Overinflated tires cut, snag or puncture
more easily than properly inflated tires.
Also overinflating tire will not increase its
load carrying capacity.
108
2. Tire Matching and Spacing on Duals
Tires on a dual assembly must be matched for size (diameter or rolling radius) and type of construction to obtain the
desired and expected performance and life.
a. Matching of Size:
Tire sizes can vary between manufacturers and as they
wear. Special care must be taken to be sure the tire
size (rolling radius, diameter or circumference) is within
the following dimensions:
Rolling radius: 1/8 inch (3 mm)
Diameter:
1/4 inch (6 mm)
Circumference: 3/4 inch (19 mm)
Fig. 8-14 TIRE DIMENSIONS
Measure the tire when it is mounted, inflated to its
specified pressure and not loaded. The easiest method
is to use a steel tape to measure the circumference of
the tire.
Unequal sized tires will require the larger tire to carry
more of the load and potentially overload it. Overloading accelerates the wear and can lead to tire failure.
When the one tire fails, the remaining tire or tires will
then also be overloaded. The smaller tire will not
contact the road surface properly and will wear in an
irregular manner giving poor durability.
b. Tire Construction:
Customers can use radial or bias ply tires on their
trailer. However, it is recommended that different types
of tires not be mixed on an axle. Each type of tire has
different deflection, cornering and spring characteristics.
These differing characteristics cause the tires to always
fight each other during operation and will give erratic
handling and poor wear characteristics when mounted
on the same axle. Different types can be mounted on
different axles but not on the same axle.
c.
Tire Spacing:
A wide variety of rims can be used on the trailer and
each will provide a different offset. Select the rims to
provide sufficient space and clearance between the
sidewalls of the tires. Normally there should be at least
2 inches (50 mm) and 3 inches (75 mm) between the
sidewall of a bias ply and radial dual tire assembly
respectively. This spacing will provide sufficient clearance for each type of tire to deflect as they rotate and
when the impact a pothole or bump in the road. If they
touch during operation, they will wear or abrade at the
contact point. In addition, tires that are too close do not
shed dirt, trash or stones that can get between them
during operation as well as properly spaced tires.
109
8.8
BRAKES
All components in the brake
system must be maintained in
good condition for the system to
perform at top efficiency. It is
recommended that brakes and
associated components be
checked, serviced and maintained
per the Trailer Preventative Maintenance Schedule (TPM) for the
trailer. In this section, the basic
brake disassembly and assembly
procedure will be covered. Refer
to the axle manufacturers service
manual for a more detailed repair
and rebuilding procedure.
Check brakes frequently to keep
them in top condition. Poorly
maintained brakes will not stop the
trailer as effectively as wellmaintained brakes and in the
extreme could fail completely
leaving no brakes or no ability to
Fig. 8-15 BRAKE SYSTEM
stop the unit.
It is recommended that the driver checks the
brakes at least once during each working day
when checking tire pressure and performing a
quick visual of the unit. Use your hand to check
the temperature of the drum. All drums should be
approximately the same temperature if the system
is functioning properly. If any drum is significantly
warmer or colder than the rest, it indicates a
problem. Determine the cause of the problem and
correct it before resuming work. By discovering
and correcting it while it is minor, major repair,
expense and down time can be prevented.
At 25,000 miles (40,000 km) or every 3 months
when the axle is raised off the ground for the
complete wheel end inspection, check the brakes
at the same time. When the wheels are turned by
hand, the wheel end should decrease speed
slowly. If it does not, the brakes could be dragging or there could be a problem with the bearings. Dragging brakes will also be detected by hot
drums during the daily drum temperature checks.
Adjust the brakes to correct the problem.
110
Remove the brake dust
covers (if so equipped) to
access the shoes. Check
the thickness of the
linings. Reline or replace
shoes when the lining
thickness is less than 1/8
inch (3 mm). Uneven
wear among the brake
shoes on a trailer indicate
that the braking system
has not been set or
maintained properly
causing uneven application and wear. If uneven
lining wear appears, reset
the system to provide
even application of all the
shoes. Do not operate
when the linings are less
than 1/8 mile (3 mm) to
prevent the lining anchor
rivet or bolts from contacting the drum. Head
contact with the drum will
cut grooves in the surface
and require extra machining to remove them when
rebuilding the brakes.
Fig. 8-16 EXPLODED VIEW
Several types of friction material are available for use on
the brake shoes. Each has its own friction coefficient
and braking characteristics. Select the one that best fits
your application but do not mix materials on the same
trailer. Differing materials require different application
forces to obtain the same braking force and a braking
system can only apply one force when it is properly set.
Recent changes in environmental laws have
banned the use of asbestos including brake linings.
Always use the appropriate safety gear when
removing brake shoes
containing asbestos from
your trailer. Replace the
shoes that are equipped
with approved material.
Fig. 8-17 AXLE
111
B. Installing Brakes:
1. Inspect all the components. Replace any
that are cracked, bent or worn.
2. Lubricate the camshaft spline, slack
adjuster gear and slack adjuster pins with
anti-seize compound.
3. Install cam shaft and slack adjuster.
Secure with snap rings.
4. Adjust slack adjuster to its required angle
and attach to the push rod. Release slack
adjuster pawl if so equipped.
5. Use a good quality brake grease to
lubricate the anchor pins and rollers
where they contact the brake shoes.
6. Place the upper shoe in position.
7. Place the lower shoe in position and
attach 2 new retaining springs.
8. Rotate lower shoe forward and attach
new brake shoe return spring.
9. Install both cam rollers and secure with
retainers.
10. Install and secure the remaining wheel
and components.
11. Repeat with other wheel ends as required.
12. Tighten all fasteners to their specified
torque.
A. Removing Brakes:
1. Position the trailer on a level hard surface.
2. Exhaust all the air from the air system.
3. Jack the axle up and place on safety
stands.
4. Remove the wheel assembly from the
axle.
5. Release the slack adjuster (Refer to
Section 8.6).
6. Disable or cage spring brakes if so
equipped.
7. Drain oil from hub and remove spindle
end components.
8. Remove the hub and drum assembly.
Support with a hoist as the assembly
slides off the spindle. Use a puller if
required.
9. Remove roller retaining clip from the
bottom and top brake shoe cam rollers.
10. Disconnect and remove bottom shoe
return spring.
11. Rotate bottom shoe to remove retaining
springs.
12. Lift top shoe to remove.
13. Disconnect push rod from slack adjuster.
14. Back off and remove slack adjuster.
15. Remove cam shaft.
Manual Bearing Adjustment
a. Tighten to 200 ft-lbs.
b. Completely loosen.
c. Tighten to 50 ft-lbs.
d. Loosen 1/4 turn
Description
1.
2.
3.
4.
5.
6.
7.
8.
9.
Torque Range
(lb-ft)
N.m
10-15
15-20
Tighten to 200,
loosen, tighten
to 50, loosen
1/4 turn
Jam nut - manual bearing adjustment
250-300
Brake mounting bolt
130-165
Two-piece dust shield bolts (shown)
• Forged spider
15-20
Bolt-on bushing bolts
25-35
Cam bushing bolts
25-35
80-125
Air chamber nuts
Hub-cap bolts
Hub fill plug
Adjustment nut - manual bearing
adjustment (double nut)
Fig. 8-18 BRAKE/WHEEL END COMPONENTS
112
Fastener
Size
13-20
20-27
136
68
5/16"
3/8"
Size depends on axle model
and adjustment method.
340-408
177-224
5/8"
20-27
34-48
34-48
109-170
3/8"
3/8"
3/8"
5/8"
8.9
8.9.1
SLACK ADJUSTERS
ROCKWELL AUTOMATIC SLACK ADJUSTER
1. The air chamber push rod extends beyond its pre-determined
optimum stroke length, the
change in geometry between the
chamber pushrod and slack lever
arm raises the slack adjuster
actuator rod.
2. The piston contacts the retaining
ring and lifts the actuator.
3. If adjustment is required, the
spiral serrations on the actuator
are lifted over the serrations on
the pawl.
4. When the push rod retracts, it
forces the actuator downward into
the pawl serrations and the
actuator rotates.
Installed
5. As the actuator rotates downward, it turns the worn gear that
turns the gear/spline/camshaft to
maintain the brake adjustment.
6. Pull the pawl out and block in the
out position when disassembling
the brake system.
7. Use the bottom nut to turn and
adjust the gear position.
Schematic
Fig. 8-19 ROCKWELL SLACK ADJUSTER (TYPICAL)
113
8.9
8.9.2
SLACK ADJUSTERS (cont'd)
MANUAL AND AUTOMATIC SLACK ADJUSTER MAINTENANCE
In an S-cam type foundation brake, the final link
between the pneumatic system and the foundation brake is the slack adjuster. The arm of the
slack adjuster is fastened to the push rod of the
chamber with a clevis and the spline end is
installed on the brake camshaft.
MANUAL SLACK ADJUSTERS
Manual slack adjusters contain four basic components: the body, worm gear, worm shaft, and
locking screw or collar. See Fig. 8-20.
The worm shaft of a slack adjuster incorporates
an external adjusting hex. Turning the adjusting
hex rotates the worm shaft which turns the worm
gear and brake cam shaft, thus spreading the
brake shoes and reducing drum-to-lining clearance.
Primarily, the slack adjuster is a lever that converts the linear force of the air chamber push rod
into a torque which turns the brake camshaft and
applies the brakes.
Two types of slack adjusters are in use: manual
type slack adjusters, which periodically require a
manual adjustment and automatic slack adjusters
which will automatically adjust during normal
service braking applications. All slack adjusters
utilize the worm and gear principle and fundamentally differ only in their torque limit specification.
Higher torque-rated slack adjusters use the lock
ball or plunger and worm shaft indent principle
adjustment lock. The lock ball or plunger must
engage the worm shaft indent after the adjustment
is completed. An audible metallic click can be
heard when engagement is made.
IMPORTANT
Manual and automatic slack
adjusters are for brake adjustment and will not compensate for
faulty foundation brakes.
Ball Indent Type Slack Adjuster
Positive Lock Type Slack Adjuster
Fig. 8-20 MANUAL SLACK ADJUSTERS
114
AUTOMATIC SLACK ADJUSTERS
While automatic slack adjuster designs vary in the
manner in which they are installed and operate, all
are designed to automatically maintain a predetermined shoe-to-drum clearance or brake chamber
stroke. Some automatic slack adjusters adjust
upon the brake application stroke, others adjust
upon release. Automatic slack adjusters can
greatly reduce manual adjustments. Automatic
slack adjusters do not reduce the need for
periodic maintenance.
Fig. 8-21 AUTOMATIC SLACK ADJUSTERS
115
8.9
8.9.2
SLACK ADJUSTERS (cont'd)
MANUAL AND AUTOMATIC SLACK ADJUSTER MAINTENANCE (cont'd)
BRAKE ADJUSTMENT PROCEDURE
NOTE
WARNING
All adjustments should be made
with cold brake drums and the
brakes fully released.
To avoid possible injury, proper precautions
must be taken to prevent automatic actuation
of the brake chambers while adjusting slack
adjusters. Always block the wheels or mechanically secure the vehicle. Spring brakes
must be mechanically cages or released with
air. All brakes should be released.
A. Manual Slack Adjuster Brake Adjustment
Procedure
1. Slack adjusters with locking collar
(positive lock type):
Jack up the vehicle. Thoroughly clean the
adjusting hex and locking sleeve area.
Position a wrench or socket over the
adjusting hex and disengage the locking
sleeve by depressing it. With the locking
sleeve fully depressed, adjust the brakes
while rotating the tire and wheel. Use the
wrench or socket to turn the adjusting hex
until the shoes contact the drum. Then
back off the adjusting hex until the tire
and wheel turn freely. The actuator
stroke should be as short as possible
without the brakes dragging.
After establishing solid shoe-to-drum
contact, back off the adjusting hex 1/4
turn for worn linings and 1/2 turn when
relining brakes. The actuator stroke
should be as short as possible without the
brakes dragging. Measure the chamber
power stroke at 80-90 psi as described in
subsection "B", "Automatic Slack Adjuster
Brake Adjustment Procedure," below.
Take a free stroke measurement as
outlined in the section entitled FAILURE
ANALYSIS. Make sure you have at least
3/8" of free stroke. Free strokes less than
3/8" can cause brake drag. If you cannot
maintain the maximum legal stroke and
the free stroke is less than 3/8", contact
the brake manufacturer for foundation or
brake geometry problems.
If the vehicle cannot be jacked up, thoroughly clean the adjusting hex and
locking sleeve area. Position a wrench or
socket over the adjusting hex and disengage the locking sleeve by depressing it.
With the locking sleeve fully depressed,
use the wrench or socket to turn the
adjusting hex until it will go no further
indicating that either the shoes have
contacted the drum or the adjusting hex
has been turned in the wrong direction.
Pull on the slack adjuster to make sure it
will not move. If there is movement,
adjustment was made in the wrong
direction and the adjusting hex must be
turned in the opposite direction until it will
go no further.
CAUTION
When the manual slack adjuster brake adjustment is completed, the adjusting hex should be
positioned so the locking sleeve engages it,
thus locking it in place. If the locking sleeve
does not engage the adjusting hex, the slack
adjuster can back itself off.
116
2. Slack adjuster with lock screw ball
indent type lock mechanism:
Back off (turn counter-clockwise) the
worm shaft lock screw (if applicable).
Make the necessary adjustment by
turning the adjusting hex as described in
item number 1, directly above. Following
brake adjustment, make certain that the
lock ball or plunger engages the worm
shaft indent. Without such engagement,
the slack adjuster can back itself off.
Table 5 Chamber Type vs. Maximum Legal
Stroke at 80 PSI Brake Application
Pressure
Chamber Type
Fig. 8-22 PUSH ROD "AT REST"
Maximum Legal Stroke
12
Less than 1-3/8"
16
Less than 1-3/4"
20
Less than 1-3/4"
24
Less than 1-3/4"
24 Long Stroke
Less than 2.0"
30
Less than 2.0"
36
Less than 2-1/4"
B. Automatic Slack Adjuster Brake
Adjustment Procedure
An automatic slack adjuster should not have
to be manually adjusted except for initial
installation and at brake reline. Instead of
manually adjusting the slack, the following
procedure should be followed during inspection:
Fig. 8-23 PUSH ROD "EXTENDED"
Chamber Power Stroke:
A power stroke at 80-90 psi brake application
pressure will check both adjustment and
foundation brake condition. Perform the
following:
3. Measure the brake chamber face to the
center of the clevis pin (see Fig. 8-23).
4. The difference between the brakes released and applied measurements is the
power stroke measurement. If the stroke
is less than the maximum stroke for the
chamber size (see Table 5), the inspection
is complete. If the power stroke is more
than the maximum stroke for the chamber
size (see Table 5), refer to the section
entitled FAILURE ANALYSIS.
1. Measure the brake chamber face to the
center of the clevis pin at all wheel
locations (see Fig. 8-22).
2. Make brake applications until the air
reservoir gauge reads 90-100 psi. Then
have an assistant make a full brake
application and hold it.
117
8.9
8.9.2
SLACK ADJUSTERS (cont'd)
MANUAL AND AUTOMATIC SLACK ADJUSTER MAINTENANCE (cont'd)
AUTOMATIC SLACK ADJUSTER ADJUSTMENT
PROCEDURE AT RELINE AND INSTALLATION
An automatic slack adjuster should be manually
adjusted after a brake reline and/or installation
using the following procedure:
1. Position a wrench or socket over the adjusting
mechanism.
NOTE
If the automatic slack adjuster is
equipped with a pawl, remove the
pawl for the brake adjustment
and then properly reinstall the
pawl (see Fig. 8-24 Style C).
Tighten the pawl to 15-20 ft-lbs.
4. Measure the chamber power stroke at 80-90
psi brake application pressure as described in
the previous section.
2. Rotate the adjusting mechanism until the
brake shoes contact the drum. Pull on the
slack adjuster by hand to make sure it will not
move. If there is movement, adjustment was
made in the wrong direction and the adjusting
hex must be turned in the opposite direction
until it will go no further.
5. Take a free stroke measurement as outlined
in the section entitled FAILURE ANALYSIS.
Make sure you have at least 3/8" free stroke.
Free strokes of less than 3/8" can cause
brake drag. If you cannot maintain the maximum legal stroke and the free stroke is less
than 3/8", contact the brake manufacturer for
foundation or brake geometry problems.
3. Reverse the rotation, backing the slack
adjuster off one-half (1/2 turn).
Fig. 8-24 SLACK ADJUSTER TYPES
118
ROADSIDE BRAKE ADJUSTMENT
If the driver has to adjust brakes on the road, the
following procedure is recommended:
If the vehicle is equipped with an automatic slack
adjuster, use a pry bar to pull on the slack adjuster. If movement is more than 5/8", a manual
adjustment should be made following the same
procedure as described below for a manual slack
adjuster. If the automatic slack adjuster is
equipped with a pawl, remove the pawl for the
brake adjustment and then properly reinstall the
pawl. If the automatic slack adjuster needs
adjustment, inform maintenance personnel.
3. Back off the slack adjuster a small amount at
a time, while tapping on the brake drum with a
wrench in between adjustments. Stop backing off the adjuster when you hear a clear
ringing sound from the brake drum when
tapped with a wrench.
1. Block the wheels or mechanically secure the
vehicle. On the brakes to be adjusted, spring
brakes must be mechanically caged or released with air.
NOTE
4. Using a pry bar, pull on the slack adjuster by
hand. If movement is more than 5/8", adjustment was not done properly or there is a
problem with the foundation brake.
Some brake chamber push rods are
marked to warn of an over-stroke condition. While the marking themselves may
vary, the marking system has two basic
features. They are: There is a mark on
the brake chamber push rod near its clevis
attachment to signal that it incorporates a
stroke alert indicator (see Fig. 8-25 B).
There also is a mark on the brake chamber push rod opposite its clevis attachment
end which is exposed from the brake
chamber wherever over-stroke occurs
(see Fig. 8-25 C).
2. Rotate the adjusting mechanism until the
brake shoes contact the drum. Using a pry
bar, pull on the slack adjuster by hand to
make sure it will not move. If there is movement, adjustment was made in the wrong
direction and the adjusting mechanism must
be turned in the opposite direction. Tap the
brake drum with a wrench; you should hear a
dull clunk indicating the brake linings are tight
against the drum.
Fig. 8-25 PUSH ROD POSITION
119
8.9
8.9.2
SLACK ADJUSTERS (cont'd)
MANUAL AND AUTOMATIC SLACK ADJUSTER MAINTENANCE (cont'd)
FAILURE ANALYSIS
Manual Slack Adjuster Failure Analysis
Manual slack adjusters should be inspected for
gear set wear. To do this, back off the adjusting
hex until all spring pressure is relieved from the
clevis. Work the adjusting nut 1/4 turn back and
forth while watching for cam rotation. If you have
1/8 to 1/4 turn of play without the cam rotating, the
manual slack should be replaced. Repeat this
procedure every 1/4 turn of the adjusting nut to
check the whole gear set.
Automatic Slack Adjuster Failure Analysis
If the power stroke is at or more than the maximum stroke, measure free stroke to determine if
the slack adjuster is operational.
FREE STROKE MEASUREMENT
Free stroke is the amount of slack arm movement
required to move the brake shoes against the
drum. To measure free stroke, perform the
following:
1. With brakes released, measure from the
brake chamber face to the center of the clevis
pin.
2. With a lever, pry the slack adjuster arm until
the brake shoes contact the drum and measure the slack adjuster movement (see Fig. 826).
3. The difference between the brake released
and applied measurements is the free stroke.
The free stroke should be 3/8" - 5/8". If the
free stroke is in the correct range, the out of
spec stroke is due to a foundation brake
problem. Check for missing or worn components, cracked brake drums, or improper
lining-to-drum contact. If the free stroke is
greater than recommended, an automatic
slack adjuster function test should be performed.
Fig. 8-26 FREE STROKE
120
AUTOMATIC SLACK ADJUSTER FUNCTION
TEST
1. Remove the pawl, then rotate the adjusting
mechanism at least one complete turn as if
backing off the brake adjustment (see Fig. 827 Style C). The pawl must be installed
properly and tightened to 15 - 20 ft-lbs. after
backing off the adjuster.
3. Check back-off torque by rotating the adjusting
hex as follows:
Style A: Minimum 15 ft-lbs. counter-clockwise
(CCW).
Style B: Minimum 15 ft-lbs CCW.
2. Apply the brakes several times and observe
whether the adjustment mechanism is rotating
in the direction needed to reduce brake
chamber pushrod stroke. If the adjusting
mechanism does not rotate, the slack adjuster
should be replaced.
Style C: Less than 45 in-lbs. CCW (pawl
removed)
Style D: Minimum 15 ft-lbs CCW
Consult the manufacturer for more information.
Fig. 8-27 SLACK ADJUSTER TYPES
PREVENTATIVE MAINTENANCE
Every 6 months, 50,000 miles, or 1,800 operating
hours, lubricate all slack adjusters and clevis pins
with manufacturer's recommended lubricant.
Check for worn clevises, clevis pins, clevis pin
bushings, and control arm/bracket wear. Failure
to replace worn components will increase chamber stroke. Lubrication and inspection may be
necessary at earlier, intervals due to different
operating conditions.
Every month, 8,000 miles, or 300 operating hours,
check brake chamber push rod travel; stroke
should be as short as possible without the brakes
dragging or the push rod binding. Adjust manual
slacks if necessary. Due to different operating
conditions, adjustments may be necessary at
earlier intervals.
121
8.10
AIR CHAMBER/SPRING BRAKE
Air chambers mounted on the axle use
the air supply/pressure from the tractor
to apply the service brakes for stopping
the vehicle. In addition this air chamber
may be equipped with a spring brake
that applies the brake when the service
side of the brake loses air. The spring
brake side of the system is used as a
parking and/or emergency brake if the
service side fails.
Spring brakes should not be serviced by
anyone in the field unless they have
been trained in the proper procedure.
Do not work on the brakes unless the
springs are caged or locked out. Do not
move the trailer if the springs are caged.
When caging or locking out the spring
brakes, follow this procedure:
Schematic
1. Place chocks in front of and behind
the trailer wheels.
2. Insert the release bolt, stored on the
side of the chamber, into the hole in
the head and through the piston.
3. Turn the release bolt clockwise until
it stops and locks.
4. Pull release bolt out as far as possible and run the nut down while
holding the bolt in place.
5. Use a wrench to turn the release bolt
nut clockwise until the bolt extends
about 3 inches.
6. Be sure the release bolt is locked in
position.
7. The spring is now caged and the
trailer can be moved.
Axle
Fig. 8-28 SPRING BRAKE
8. Always release the spring before
placing the trailer back in service.
122
8.11
SUSPENSION SYSTEM
The suspension system is the group of components that connect the axle to the main trailer
frame and absorb the shock loads from the road.
Walinga trailers can be equipped with either a
mechanical or air ride suspension system. Either
system works well and will provide many years of
trouble-free service.
8.11.1
AIR RIDE SUSPENSION
An air ride suspension consists
of air springs that are inflated
and pressurized by the trailer air
system and controlled by a
height control valve. It is a
simple system that requires
minimal servicing and maintenance to perform well.
Visually inspect the trailer at the
start of the day or trip to check
the condition of the suspension.
When the suspension is in good
condition, the frame will be level
and at the proper ride height.
Also, check for loose fasteners
or damaged components.
Correct any problems before
placing the trailer into service.
Problems caught early and
corrected minimize cost and
downtime.
Fig. 8-29 SUSPENSION
Table 6 Bolt Torque Values For Hendrickson Turner Suspensions
Description
Size
Torque
Quik-Align™Pivot Bolt
7/8"-9
475-525 Ft. Lbs
Shock Bolt
3/4"-10
150-175 Ft. Lbs.
Air Spring Bolt (Lower)
1/2"-13
25-35 Ft. Lbs.
Air Spring Nut (Upper)
3/4"-16
45-55 Ft. Lbs.
Brake Dust Shield Bolt
5/16"-18
160-180 In. Lbs.
ABS Bracket Bolt
1/4"-20
75-100 In. Lbs.
Every 25,000 miles (40,000 km) or 3 months,
visually inspect all components and welds for
cracks, distortions or other damage. Repair or
replace all defective components before placing
unit into service.
Every 5,000 miles (8,000 km) or monthly, check
the clearance around all the suspension system
components. Correct any interference problem.
Retorque all the fasteners to their specified
torque.
123
8.11
SUSPENSION SYSTEM (cont'd)
8.11.1
AIR RIDE SUSPENSION (cont'd)
Typical repairs include but are not limited to:
1. Air Spring Replacement:
Air springs are designed to be virtually
trouble-free throughout their life. Problems
seldom occur unless they are cut, punctured, abraded, pinched or torn and then
they must be replaced.
2. Shock Absorber Replacement:
Shock absorbers remove energy from the
suspension system as the trailer encounters
holes and bumps on the road surface. They
also act as a stop for the air springs to prevent
the axle from moving too far away from the
frame and tearing or damaging the air spring.
a. Block the wheels to prevent trailer
movement.
a. Remove the upper and lower mounting
bolts.
b. Exhaust air from the suspension system.
b. Remove old shock and install new one.
IMPORTANT
c.
Raise and support the frame on safety
stands.
Use only correct Hendrickson
Turner replacement parts. Substitute parts do not work with the
suspension system.
NOTE
Do not raise frame too high
unless shock absorbers are
installed to prevent over-extending the air spring.
c.
d. Disconnect the air lines to the air
spring(s).
3. Pivot Bushing:
Pivot bushings are a very durable, long lasting
component. Bushing failures are rare and
should be attempted only when all other
problem causes have been eliminated. A
bushing removal/installation tool is available
from Hendrickson Turner when replacing the
bushing and can be borrowed from your
dealer or distributor. A 10 ton portable hydraulic press must be supplied by the customer. Purchase the bushing replacement kit
that includes a new bushing, pivot bolt kit and
lubricant.
e. Loosen mounting bolts and remove air
spring(s).
f.
Install new air spring(s).
g. Tighten mounting bolts to their specified
torque of 50 ft. lbs. (68 N.m).
h. Install air lines and tighten to their specified torque.
i.
Repeat on other air springs.
j.
Remove stands from under frame.
Secure shock by tightening mounting
bolts to their specified torque of 250 ft.
lbs. (338 N.m).
When replacing the bushing, follow this
procedure:
a. Use a torch to "cut off" the Huck fasteners
from the clamping bolt.
b. Press out the old bushing and press in the
new one.
c.
Install the clamping bolt and tighten the
fastener to 800 ft. lbs. (1080 N.m).
d. Tack weld the nut to the bolt to prevent
loosening.
124
4. Air Control (Ride Height Control):
An air ride suspension system uses the
air from the tractor to pressurize the air
springs. A single height control valve is
used to monitor the height of the frame
above the axle and add/exhaust air from
the system as required to maintain this
dimension. Normally this dimension is
set for your trailer and never changes.
The height control valve is located on
the rear axle of the axle assembly area
on the trailer and controls the adding/
exhausting of air to the air springs. As
the dimension between the frame and
axle increases, the control lever moves
down and air is exhausted from the
system. As the dimension decreases,
air is added to raise the frame. All
valves incorporate a 5 to 15 second
time delay to minimize jerking or cycling. Replace valve if not functioning
properly.
System Schematic
Valve Schematic
Valve
Fig. 8-30 RIDE HEIGHT CONTROL
125
8.11
SUSPENSION SYSTEM (cont'd)
8.11.1
AIR RIDE SUSPENSION (cont'd)
5. Dump Valve:
All air control systems are equipped with a
dump valve that allows the operator to exhaust the air from the system as required.
a. Always dump the air when parking the
trailer and before unhooking.
b. Dumping the air is optional when:
i.
Loading: The rapid or
sudden addition of load to
the trailer can cause the
control valve to search for
neutral. Exhausting the air
rests the frame on the
interval bumper and prevents the valve from
searching. When the
loading is completed, close
the valve to repressurize
the system.
Fig. 8-31 DUMP VALVE
ii.
Unloading: Dumping rapidly can
also require the valve to search for
neutral. Close the valve when the
unloading is completed to
repressurize the system.
126
8.11
SUSPENSION SYSTEM (cont'd)
8.11.2
MECHANICAL SUSPENSION
Two types of mechanical suspensions are available on the trailer and must be specified and
ordered from the factory. Both work well and
provide the customer with a choice.
b. Check fit and function of all bushings.
The standard suspension for the tandem and
triaxle models are the Reyco 21B 8 leaf and the
Hutch 9700 3 leaf. Both are designed to require
minimal service and maintenance on a trailer.
However, these service intervals and maintenance procedures must be followed:
d. Check all other welds for signs of cracks
or distortion.
c.
Check all hanger and hanger bracing
welds for cracks.
e. Check fit of springs in hangers and
equalizers.
f.
Service Intervals:
1. Follow the break-in procedure specified in
Section 4.3.
Check equalizers for excessive wear at
spring ends.
g. Check suspension system alignment.
5. In addition to checking the alignment at the
recommended intervals, axle alignment
should be checked when any of the following
conditions occur:
2. Visually inspect the suspension at the start of
the day or trip for bent, broken or loose
components. Always correct these conditions
and perform a complete check-out of the
suspension before placing the trailer back in
service.
a. Discovery of loose fasteners or components.
3. After each additional 25,000 miles (40,000
km), or every 3 months, retorque all the
fasteners to their specified torque per the
following table. Always use an accurate
torque wrench when retorquing fasteners and
attach to the nut.
IMPORTANT
A loose fastener is defined as
one whose torque has dropped
below its specified level.
b. Discovery of elongated holes in a suspension system component.
4. 25,000 miles (40,000 km) or every 3 months,
inspect the following:
c.
a. Check position of clamp if moveable
clamps used. Clamping legs must be
centered over slot in end tube.
Whenever bushings are replaced.
d. Whenever excessive or abnormal tire
wear is observed.
Table 7 Suspension Fastener Torque Requirements
Description
Size
Torque
Equalizer Shaft (All Spread)
1-1/4" Nut
49" Spread
3/4" Capscrew
54"-65-1/2" Spread
2-1/2" Nut
72"-109" Spread
1-1/2" Nut
Ft. Lbs.
575-625
200-225
300-325
200-225
N.m
780-850
270-305
410-445
270-305
U-Bolt Nuts
300-325
410-445
1"
160-200
216-270
Torque Arm Clamping Nuts
1/2"
3/4"
80
175-200
110
236-270
Spring Retainer Nuts
1/2"
80
110
Torque Arm Bolt Nuts
127
8.11
SUSPENSION SYSTEM (cont'd)
8.11.3
SUSPENSION SYSTEM SCHEMATICS
128
8.12
TIRE WEAR PATTERNS
The way your tires wear is a good indicator of
other parts of the suspension. Abnormal wear
patterns are often caused by the need for simple
maintenance or axle alignment.
a. Over-Inflation:
Excessive wear at the center of the tire
indicates the air pressure in the tire is consistently too high. The tire is riding on the center
of the tread and wearing it prematurely.
Occasionally, this wear pattern can result from
outrageously wide tires on narrow rims. The
cure for this is to replace either the tires of the
wheels.
Over-Inflation
Fig. 8-32 OVER-INFLATED
b. Under-Inflation:
This type of wear usually results from consistent under-inflation. When a tire is underinflated, there is too much contact with the
road by the outer treads, which wear prematurely. When this type of wear occurs, and
the tire pressure is known to be consistently
correct or the need for axle alignment could
be indicated.
Under-Inflation
Fig. 8-33 UNDER-INFLATED
c.
Feathering:
Feathering is a condition when the edge of
each tread rib develops a slightly rounded
edge on one side and a sharp edge on the
other. By running your hand over the tire, you
can usually feel the sharper edges before you
will be able to see them. The most common
causes of feathering are incorrect toe-in
setting, deteriorated bushing in the suspension or misalignment.
Feathering
Fig. 8-34 FEATHERING
129
d. One-Side Wear:
When an inner or outer rib wears faster than
the rest of the tire, the need for axle alignment
is indicated. There is excessive camber in the
axle causing the wheel to lean too much
excessive load on the one side of the tire.
Misalignment could also be due to sagging
springs, or worn suspension system components.
One side wear
Fig. 8-35 ONE-SIDE WEAR
e. Cupping:
Cups or scalloped dips appearing around the
edge of the tread almost always indicate worn
(sometimes bent) suspension parts. Adjustment of axle alignment alone will seldom cure
the problem. Any worn component that
connects the wheel to the suspension can
cause this type of wear. Occasionally, wheels
that are out of balance will wear like this, but
wheel imbalance usually shows up as bald
spots between the outside edges and center
of the tread.
Cupping
Fig. 8-36 CUPPING
f.
Second Rib Wear:
Second rib wear is usually found only in radial
tires, and appears where the steel belts end in
relation to the tread. It can be kept to a
minimum by paying careful attention to tire
pressure and frequently rotating the tires.
This is often considered normal wear but
excessive amounts indicate that the tires are
too wide for the wheels.
Second-rib wear
Fig. 8-37 SECOND RIB WEAR
130
8.13
8.13.2
AIR SYSTEM
A vehicle air system is a combination of the components
on the tractor and the trailer. All must be maintained in
good condition for the entire system to function as
required. Although a visual check will indicate the outer
condition of the components, it does not indicate the
leaks or responsiveness of the system. To evaluate the
integrity and responsiveness of the system, perform
these functional checks:
Trailers are equipped with an air system, that is
pressurized by a compressor on the tractor, for
operating the discharge gates, brakes and air
suspension (if so equipped). All components
must be in good condition for the system to
function and perform as intended. The air system
must be inspected to be kept in good condition
and functional checks performed to be sure it is
operating as required.
8.13.1
AIR SYSTEM FUNCTIONAL
1. Attach the trailer to a tractor and connect all the air
and electrical lines.
AIR SYSTEM INSPECTION
2. Block wheels.
The pre-trip or pre-start inspection include several
air system related checks, inspections or tasks
including but not limited to:
3. Stop tractor engine and exhaust air from all tanks.
4. Start engine and run at fast idle (1200-1500 RPM)
to charge the air system.
Daily
1. Check that the glad hands are clean and in
good condition. Check seals in glad hand
Clean, repair or replace as required.
Verify that:
a. Low pressure alarm goes off when the system
pressure exceeds 50 psi.
2. Check that the air hoses between the tractor
and the trailer are routed to prevent rubbing,
chaffing or pinching. Reroute to correct
condition if required.
b. Increasing the system pressure between 50 psi
and 80 psi takes less than 3 minutes.
c.
3. Drain moisture from all air tanks. Pull on the
cable attached to drain valve on the bottom of
each tank until the water or spray no longer
can be seen.
The compressor cuts out when the system
pressure exceeds 120 psi.
d. Fan brakes to use air. Compressor must
engage when system pressure drops below 105
psi.
IMPORTANT
NOTE
Tanks must be drained daily in high humidity and cold temperature conditions to
prevent getting water or ice in the system.
Release spring brakes before
fanning service brakes.
5. Push emergency valve to charge trailer system.
Apply and release service brakes.
4. Check that all the lines and hoses conveying
air along the frame are tied up and secured to
prevent dragging, scuffing or snagging. Tie
up or protect as required to correct the
condition. Damaging an air system component can cause a sudden loss of pressure
and result in a loss of service brakes.
6. Build system above 120 psi and stop engine.
Verify that:
a. Main tank pressure does not drop more than 18
psi when brakes are fully applied using brake
pedal. If pressure drop exceeds 18 psi, adjust
brakes and recheck.
IMPORTANT
New FMVSS-121 regulations mandate
higher pressures in the supply line to
insure proper brake operation. Set the
compressor pressure for cut-in to 105
psi and cut-out to 120 psi. Do not use
additives in the air systems.
b. System pressure should not drop more than 4 psi
per minute. Listen for audible leaks.
c.
Release foot valve, fan treadle to drop main
reservoir pressure. Brakes should dynamite
automatically when the pressure drops below 60
psi.
Adjust or repair system until these conditions are met.
131
8.13.3
AIR SYSTEM SCHEMATICS
Tandem Axles - 2 Tank 2 Valve
Triaxle - Tridem W/FF2
132
8.14
ABS VEHICLE CONTROL SYSTEM
a. On a stoplight activated system, the
warning lamp comes ON when you apply
the brakes and goes OFF when you
release the brakes on a stationary vehicle.
Trailers can be equipped with a system that
controls the brakes on a vehicle to prevent wheel
lock-up when braking. The system consists of an
ECU (Electronic Control Unit), Modulator (ABS
modulator valve), tooth wheel, wheel speed
sensor and wiring harness. The system configuration is determined by the number of wheel
sensors and relay valves in the system. The
system is designed with a self-diagnostic feature
that monitors the condition of the system and can
indicate system faults through a series of cooled
flashing lights. Each operator and/or serviceman
should have a copy of the Service Booklet from
Rockwell that explains the Blink Code Diagnostics
System. Use the ECU/Valve serial number and
configuration to specify the applicable booklet for
your system.
Warning Lamp With Stoplight Power
1. Power:
The system can be powered by tapping into
the "live" wiring harness or through the brake
light circuit. With the former, the system is
ON whenever the ignition key is turned on.
With the latter, the system is ON when the
brakes are applied.
Brakes
Fault in
System
Vehicle
Speed
Warning
Lamp
Released
N.A.
N.A.
Off
Applied
N.A.*
< 4 mph
On
Applied
No
> 4 mph
Flashes once, then
stays off for
remainder of stop.
Applied
Yes
N.A.*
On for duration of
stop.
* At less than 4 mph, you cannot tell whether the
light indicates a fault or an incomplete self-check.
To tell if there is a fault, you must apply the brakes
while driving faster than 4 mph to see if the light
stays on during the application.
2. Function:
Sensors on each wheel monitor wheel speed
and transmit a signal to the ECU. During
heavy, severe and emergency braking or
hazardous road conditions, the ECU monitors
and compares the speed of each wheel to
determine if any are slowing too rapidly. If a
wheel is slowing too rapidly, the ECU works
with the modulator valve to relieve the air
pressure to the brake son that wheel to
prevent lock-up. By preventing wheel lock-up,
each wheel provides maximum braking force
and eliminates trailer instability.
b. On a constant-power system, the warning lamp comes ON when you turn the
ignition ON and goes OFF when the
vehicle exceeds 4 mph (6 km/h).
Warning Lamp With Constant Power
3. Warning Lamp:
Each system is equipped with a warning lamp
to display the condition of ABS system to the
driver/operator. Be familiar with the meaning
of the warning lamp codes before using the
trailer.
Ignition
Fault in
System
Vehicle
Speed
Warning Lamps
(on Trailer and
Dash)
Off
N.A.
N.A.
Off
On
N.A.**
< 4 mph
On**
On
No
> 4 mph
Off
On
Yes
N.A.**
On
* The light comes on at the initial activation of the
ECU, not each time the vehicle slows down below
4 mph. Until the vehicle initially exceeds 4 mph,
you cannot tell if the light indicates a fault or an
incomplete self-check. To tell if there is a fault,
you must drive faster than 4 mph and see if the
light stays on. Once vehicle speed exceeds 4
mph, the light remains off unless a fault occurs or
the ignition is turned off and then turned on again.
133
4. Faults:
Whenever there is a fault/problem with the
system or any of its components, the
warning lamp will not come ON per the
tables listed on the previous page. The
system is designed with an internal selfdiagnostic and memory system to tell
service personnel the cause and location/
site of the fault/problem through their
diagnostic blink code system.
Sensor Locations
5. Blink Code Diagnostics:
A system can be accessed using a special
diagnostic tool to plug into the ECU to
identify the faults/problems and locations.
Purchase the appropriate tool and Maintenance Booklet for your system to keep it in
good operating condition. Each system is
designed with blink code diagnostic code to
identify fault cause and location as defined
in Maintenance booklet. Always correct
any faults as they are identified to maintain
the unit in top operating conditions.
2S/1M
2S/2M
4S/2M
Fig. 8-38 ABS CONFIGURATION
134
8.15
ABS SCHEMATICS
2S/1M
4S/2M
135
8.16
ELECTRICAL SYSTEM
All trailers are equipped with an electrical
system for providing power for lights and
electrical controls. All components are designed to minimize the effects of foul weather
and adverse operating conditions. However, it
is the responsibility of the operator to check
and verify that all components are in good
condition and functioning as intended.
During the daily or pre-trip inspection, always
verify that each light functions as required. It
may be helpful to work with another individual
to verify the function of the brake or turn signal
lights. A properly functioning electrical system
is the only way an operator can communicate
his intentions to other drivers. Checking the
electrical system includes but is not limited to:
Electrical Connectors
1. Replace any bulb that is burned out.
2. Clean all reflective lenses. Replace any
that are cracked or broken.
3. Clean all connections and terminals to a
light that is flickering.
4. Reroute and secure any wires or cables
that are dangling or have snagged on
something.
5. Check the integrity of the seal around
each light. Replace any seal that is
cracked or damaged.
Table 8 Trailer Light Requirements
Function
P/N
Terminal Box
Size
(Watts)
4" Tail Lamp
8
Signal/Brake
27
Side Signal
27
Clearance
8
Marker
5
Rear
Fig. 8-39 LIGHTING
136
8.16.1
ELECTRICAL SCHEMATICS
Light Schematic
Remote Switch Schematic
137
8.17
HYDRAULIC SCHEMATICS
Bag Bulk Lead Unit With 6 Inch Crossover
138
Bag Bulk Unit Trailer Assembly With Stabilizer
139
8.17
HYDRAULIC SCHEMATICS (cont'd)
Bag Bulk Blower Unit With 4 Inch Crossauger
140
Bag Bulk Blower Unit With 6 Inch Crossauger
141
8.17
HYDRAULIC SCHEMATICS (cont'd)
Bag Bulk Blower Transfer With 4 Inch Crossauger
142
Bag Bulk Blower Transfer Unit With 6 Inch Crossauger
143
9
MAINTENANCE UNLOADING SYSTEM
9.1
BLOWER OIL CHANGING AND BREATHER CLEANING
The gears that drive and
time the blower lobes run in
an oil bath for lubrication.
Maintaining the correct level
in the reservoirs and changing every 50 hours or
monthly will insure proper
lubrication.
When maintaining the
blower, follow this procedure:
Schematic
1. Clear the area of bystanders, especially
small children.
2. Place all controls in
neutral, disengage PTO
clutches, stop engine,
set park brake, remove
ignition key and wait for
all moving parts to stop.
3. Checking Oil Level:
a. Remove the level
plug in each reservoir or check the
sight glass.
(Type or Oil see
page 7-6).
Unit
Fig. 9-1 BLOWER
b. Oil in the reservoir should just fill the
treads of the level plug hole.
c.
Add oil if low or allow the reservoir to
drain if overfilled.
IMPORTANT
It is necessary to maintain the
recommended oil level in the
reservoir. A low level causes
heating from lack of lubrication
and rapid gear and bearing wear.
Too much oil causes heating from
oil churning and can cause seal
and breather leaks.
d. Install and tighten the level plug.
144
4. Changing Oil:
a. Place a collection pan or pail under each
drain plug.
b. Remove each drain plug.
c.
Flush each case and allow several minutes to drain.
d. Dispose of the oil in an approved manner.
Do not contaminate the worksite with
used oil.
e. Install and tighten the drain plugs.
f.
Remove fill and level plugs.
g. Add Walinga Blower oil or equivalent to
each reservoir until the oil is just starting
to come out of the level plug hole.
IMPORTANT
Condensation forms and
collects inside the reservoirs
during machine operation.
Changing oil removes this
water and prevents it from
damaging the gears and
bearings.
h. Install and tighten the level and fill plugs.
5. Cleaning Breathers:
a. Remove breathers and blow out
with an air hose.
b. If dirt has caked up in the
breather, soak in good solvent
and then blow out. It may be
necessary to use a probe to
loosen the dirt.
c.
Install and tighten the breather.
d. Clean vents in end plates located
under the blower on either side of
the drain plug.
Fig. 9-2 VENTS
145
9.2
AIRLOCK
The airlocks act as a seal between the atmospheric and pressure sides of the machine and are
located under the back end of the box and left
front corner. As the rotor turns, a pocket is filled
with material when it points upward. As the
pocket rotates, it is moved to the bottom and is
moved into the pressure side of the system. The
grain is picked up by the stream of pressurized air
and moved out the discharge piping for loading or
unloading
Efficient operation of the airlock requires a close
fit between the tips of the rotor and the case to
maintain a seal between atmospheric and pressure sides.
Front
When checking or maintaining the airlock, follow
this procedure:
1. Clear the area of bystanders, especially small
children.
2. Place all controls in neutral, disengage PTO
clutches, stop engine, set park brake, remove
ignition key and wait for all moving parts to
stop.
3. Checking Tip Clearance:
a. Checking the airlock can be done through
the sliding cover or through material
screen canister.
Rear
b. Use a feeler gauge to check the clearance between the tip and the case.
Inspect each tip over its entire width.
c.
The clearance of the tips must be maintained at 0.004 to 0.006* inches at all
times. Adjust or replace tips as required
to insure system sealing. (*614 units .007
to .009).
d. Replace any tips that are bent, chipped or
broken.
NOTE
Blades are reversible if not
excessively damaged.
Airlock
Fig. 9-3 TIP CLEARANCE
146
4. Wiper Blade:
A wiper blade is located at the top of the
airlock to clean the tips as the airlock turns.
To check the wiper blade, follow this procedure:
a. Open the sliding cover or material screen
canister.
b. Reach into the top of the airlock and feel
the condition of the wiper blade.
c.
Replace if it is damaged in any way.
Fig. 9-4 AIRLOCK WIPER BLADE
5. Blade Replacement:
a. Open the sliding cover or material screen
canister.
h. Repeat mounting procedure with the other
blades.
b. Remove the tips from the rotor and the
wiper blade from the housing.
i.
Turn the rotor after each blade is installed
to be sure it does not contact the case.
c.
j.
Mount the new wiper blade. Be sure the
wiper contacts each tip slightly as the
airlock turns.
k.
Pour 1/2 gallon Varsol into the airlock.
l.
Install plate over the top of airlock.
File the ends of each replacement blade
so there is approximately 0.006 inches of
clearance between the ends and the
housing.
d. Mount the blades to their respective vane
and tighten bolts finger tight.
e. Rotate airlock rotor slightly to set the
clearance between the blade and the
case. Be sure to set it at 0.004 inches of
clearance. Use a feeler gauge.
m. Run the airlock at operating speed.
n. Clean thoroughly.
o. Blow out varsol.
f.
Tighten the center bolt first. Then the
others.
p. Remove plate over airlock.
g. Rotate the airlock and listen if it touches
the housing anywhere. A slight touch is
alright.
q. Close sliding cover or material screen
canister.
147
9.3
AIR SYSTEM RELIEF VALVES
The air in this system is moved by the
blower. It draws air into the intake side and
creates a vacuum that can pick up and
draw material into the system. As the air
moves through the blower, it becomes
pressurized and flows through the airlock to
move material out of the system and to its
destination. As the flow into the intake is
restricted, the vacuum will build until it
exceeds the setting of the intake relief
valve. The valve opens to supply a flow of
air to the blower to prevent overheating. A
relief valve on the pressure side will also
open to allow air flow if the airlock (outlet
pressure side of the circuit) is restricted or
plugged.
Gauges
The vacuum side relief valve is set to open
at 15 in. Hg vacuum and the pressure side
at 15 psi. Both must function at very close
to these specified levels to insure optimum
capacity and performance. After prolonged
use, the springs in these valves can
weaken causing the valve to open prematurely and affect machine performance.
Dirt and debris can get caught in the valve
seat allowing air leakage that affects
system performance.
Vacuum
To maintain air system relief valves, follow
this procedure:
1. Listen for the valves opening during
operation. They will sound like a
popping or a whistle if they are opening.
2. Watch the gauges in the control box to
monitor the pressure in the vacuum
and pressure sides of the air circuit.
3. Restrict the flow into the intake side of
the air system until you hear the valve
open. The vacuum gauge should read
15 in. Hg. If it does not, replace valve.
Pressure
Fig. 9-5 RELIEF VALVES (TYPICAL)
6. Remove old valve and replace it with a new
one.
4. Restrict the output side until you hear the
valve open. The pressure gauge should read
15 psi. If it does not, replace the valve.
7. Tighten valve into fitting to secure.
5. Place all controls in neutral or OFF, stop
engine, remove ignition key and wait for all
moving parts to stop.
148
10
TROUBLE SHOOTING
The Walinga Bulk Feed Unit uses an auger, air or a dual system for unloading material as required. It is a
simple and reliable system that requires minimal maintenance.
In the following section, we have listed many of the problems, causes and solutions to the problems that
you may encounter.
If you encounter a problem that is difficult to solve, even after having read through this trouble shooting
section, please call your local Walinga dealer or distributor. Before you call, please have this Operator's
Manual and the serial numbers from your trailer ready.
PROBLEM
CAUSE
SOLUTION
Suspension beams installed out
of parallel.
Determine which beam is out of
parallel, cut from axle, reposition
and re-weld.
...varies from side to side.
Axle welds missing or broken.
Clear away old welds, reposition
the beams to be parallel and reweld to axle.
...varies in one direction.
Failed pivot bushing (rare).
Contact Hendrickson Turner
Technical Service Department.
Trailer "Dog-Tracks"...
...constantly to one side.
Trailer out of alignment.
Remove weld from the alignment
collars on those axles requiring
adjustment. Realign per procedure
provided by Hendrickson Turner.
...from side to side.
Missing or broken alignment
collar welds.
Clear away failed welds and realign
per procedure provided by
Hendrickson Turner.
...to one side under load.
Suspension not square to axle.
Contact the Hendrickson Turner
Technical Service Department.
Air springs misaligned.
Compare the installation to the
suspension drawing and reposition
mountings as required.
Failed pivot bushing (rare).
Contact the Hendrickson Turner
Technical Service Department.
1. Air Ride Suspension
Trailer leans...
...constantly in one direction
149
PROBLEM
CAUSE
SOLUTION
1. Air Ride Suspension (cont'd)
Bushing Walk
The suspension beams have
shifted from the center of the
pivot bushings).
Incorrect alignment.
Re-bush the suspension and realign as per Hendrickson Turner
instructions.
Suspension beams out of parallel (vertically or longitudinally).
Determine which beam(s) is out of
position, cut from axle, reposition
and weld. Re-bush both suspension pivots.
Frame bracket centers do not
match the suspension beam
centers.
Compare the installation dimensions to the suspension assembly
drawing. Reposition the incorrect
components and re-bush both
suspension pivots.
Use of improper bushing lubricant.
Re-bush using lubricant supplied
by Hendrickson Turner.
Pivot can be moved vertically.
Faulty or worn bushing.
Replace bushing.
Bushing protrudes from the
bushing tube.
Failed bushing.
Rubber protruding from both ends
of the bushing tube is normal.
Excess rubber protruding from one
end can indicate a bushing walk
condition.
PROBLEM
CAUSE
SOLUTION
Broken or cracked spring leaves.
Replace complete spring.
Uneven load distribution.
Rearrange load for proper distribution.
Weak spring.
Replace spring.
Springs out of alignment in
hangers due to loose U-bolts.
Align springs and tighten U-bolts to
proper torque.
2. Mechanical Suspension
Improper suspension spring
action.
150
PROBLEM
CAUSE
SOLUTION
Over or under inflation.
Inflate to proper pressure.
Loose wheel stud nuts or
clamps.
Tighten wheel stud nuts or clamps.
Loose or tight wheel bearing.
Adjust bearings.
Axle bent or out of alignment.
Straighten, align or replace axle.
Tires not properly matched.
Match tires.
Improper acting brakes.
Correct brakes as required.
Rapid stopping.
Apply brakes slowly when approaching stops.
High speed.
Reduce speed.
Over or under inflation.
Inflate to proper pressure.
Excessive speed on turns.
Reduce speed.
Tire wobble due to uneven rim
clamping.
Torque tighten all rim clamps.
Worn or damaged wheel bearings.
Replace bearings.
Bent wheel or rim.
Replace wheel or rim.
Bent axle.
Replace or straighten axle.
Leaf spring broken.
Replace leaf or complete spring.
Bent axle.
Replace or straighten axle.
Frame or suspension (axles) out
of alignment.
Straighten frame or align axles.
Puncture in tire.
Repair or replace tire.
Faulty valve or valve core.
Replace valve assembly or core.
Wheel or rim damage.
Replace wheel or rim.
3. Tires
Loss of tire air pressure.
151
PROBLEM
CAUSE
SOLUTION
Bad connection.
Check electrical system circuits.
Frayed wires.
Repair as required.
Battery on tractor not sufficiently
charged.
Charge battery.
Damaged or disconnected wire
on ground cable.
Repair or replace cable.
Poor ground at sockets.
Repair as necessary.
Broken main harness.
Repair or replace.
Junction box failure.
Replace junction box.
Frayed wires.
Repair as required.
Damaged or disconnected
ground cable.
Repair or replace cable as required.
Loose or corroded connection in
ground lead between tractor and
trailer.
Repair or replace.
Internal short in junction box.
Repair or replace junction box.
4. Electrical
Lights flicker or do not
come on.
Complete loss of trailer lights.
Lights flash improperly or
appear to be crossed.
152
PROBLEM
CAUSE
SOLUTION
Air leak.
Check air line fittings and hose
connections on service or supply
line.
5. Air System
Excessive compressor
cycling.
Check service chamber at clamp
housing, push rod for damage.
Check service chamber diaphragm.
Check emergency chamber clamp
and vent holes for leakage.
Repair or replace air chamber as
required.
Check FFVII brake valve if so
equipped. Repair or replace as
required.
Trailer brakes slow and
sluggish.
System or component failure.
Check slack adjuster and chamber/
spring brake push rod alignment for
interference.
Assure slack adjuster and chamber/
spring brake push rod angle 90°
applied with proper adjustment.
Assure open lines - no kinks, bends,
closed shut-off cocks, restrictions,
excessive elbows.
Assure adequate tractor brake
function.
Have authorized service center
check for adequate pressure and
timing balance relative to tractor/
trailer application.
153
PROBLEM
CAUSE
SOLUTION
System or component failure
Assure emergency line exceeds 120
psi pressure; check and maintain
governor at max. cut-in.
5. Air System (cont'd)
Trailer brakes drag.
Check slack adjuster and chamber/
spring brake push rod alignment for
interference.
Assure slack adjuster and chamber/
spring brake push rod angle 90°
applied with proper adjustment.
Assure open lines - no kinks, bends,
closed shut-off cocks, restrictions,
excessive elbows.
Check for trapped service air
pressure at trailer service/delivery
hoses. If air pressure is noted,
check for full release of all application valves (tractor/truck/trailer).
Trailer brakes won't apply
(service).
System or component failure.
Check air delivery to emergency
system.
Check air delivery to service
gladhand.
Check air delivery to air chamber or
spring brake.
Check air delivery to all reservoirs at
system working pressure.
Check slack adjuster and chamber/
spring brake push rod alignment for
interference.
Check slack adjuster and chamber/
spring brake push rod angle 90°
applied with proper adjustment.
Park/emergency brakes
won't release.
System or component failure.
Check air jumper hoses are not
crossed between tractor and trailer.
Check air delivery to emergency
gladhands exceeds 120 psi.
Check air delivery to FFV valve.
Check air delivery to all reservoirs at
system working pressure.
154
PROBLEM
CAUSE
SOLUTION
System or component failure
(cont'd).
Check open lines - no kinks, bends,
closed shut-off cocks, restrictions,
excessive elbows.
5. Air System (cont'd)
Park/emergency brakes
won't release (cont'd).
Check that brake shoes are not
frozen to drums.
Park/emergency brakes
won't hold.
System or component failure.
Check slack adjuster and chamber/
spring brake push rod alignment for
interference.
Assure slack adjuster and chamber/
spring brake push rod angle 90°
applied with proper adjustment.
Air reservoir leaks or loose
mounting.
System or component failure.
Replace/use rubber grommets with
integral brackets.
Semi-trailer "Runs-Up" on
tractor.
Check brake linkage.
Assure slack adjuster and chamber/spring brake push rod angle 90°
applied with proper adjustment.
Check gladhand connection.
Assure open lines - no kinks, bends,
closed shut-off cocks, restrictions,
excessive elbows.
Have authorized service center
check for adequate pressure and
timing balance relative to tractor/
trailer application.
Poor braking performance.
Uneven brakes.
Check slack adjuster and chamber/
spring brake push rod angle 90°
applied with proper adjustment.
Check open lines - no kinks, bends,
closed shut-off cocks, restrictions,
excessive elbows.
Check for leaks in system by applying service brake and inspecting.
155
PROBLEM
CAUSE
SOLUTION
5. Air System (cont'd)
Poor braking performance
(cont'd).
Trailer brake lining wear excessive.
Have authorized service center
check for adequate pressure and
timing balance relative to tractor/
trailer application.
Proceed per problem "trailer brakes
drag."
Trailer brakes slow to apply.
Check slack adjuster and chamber/
spring brake push rod angle 90°
applied with proper adjustment.
Check air delivery to all reservoirs
at system working pressure.
Check open lines - no kinks, bends,
closed shut-off cocks, restrictions,
excessive elbows.
Have authorized use of "jumper
hose analyser" and duplex gauge
to pin-point brake imbalance.
Check functional return spring in
service chamber or spring brake.
Check open lines - no kinks, bends,
closed shut-off cocks, restrictions,
excessive elbows.
Trailer service brakes slow to
release.
Have authorized use of "jumper
hose analyser" and duplex gauge
to pin-point brake imbalance.
Slack adjuster not auto-adjusting.
Check for damaged actuator rod.
Replace as required.
Slack adjuster internal components
seized. Replace.
Cracked housing.
Replace slack adjuster.
Worn clevis pin bushing.
Replace bushing
156
PROBLEM
CAUSE
SOLUTION
5. Air System (cont'd)
Poor braking performance
(cont'd).
Full function valve (FFV) leaks at
exhaust port with all brakes
released.
Replace FFV valve.
Full function valve (FFV) leaks at
exhaust port with service brakes
applied.
Replace FFV valve.
Spring parking brake (service
only service chamber side of
spring brake) drags or won't
release.
Check for:
- Improper adjustment, restriction
or broken line.
- Diaphragm failure.
- System pressure too low (120 psi
min).
- Replace entire unit or piggy-back
emergency section.
Spring parking brake leaks when
pressurized for park brake
release.
Check for:
- Ruptured spring side diaphragm.
- Hose leaks.
- Repair hose leak or replace
spring brake chamber.
157
PROBLEM
CAUSE
SOLUTION
6. Hydraulic System
Hose hook up incorrect.
Reverse hoses on pump.
Loose coupling in driveline.
Check setscrews in driveline.
Loose connection.
Check hose fittings.
Air in oil.
Check hose fittings.
Bent drive shaft.
Check driveline.
Low oil supply.
Increase oil in reservoir.
Air in oil.
Check hose fittings.
Cross auger running in
reverse.
Wrong motor rotation.
Switch oil lines on cross auger
motor.
Auger does not turn when
motor is running.
Key in auger bushing is sheared.
Replace key.
Motor shaft is broken.
Remove motor and check shaft.
Loose bearing.
Tighten bearing.
Key in motor shaft is sheared.
Remove and straighten.
Auger is bent.
Remove motor and seal.
Leaking oil seal on auger motor.
Replace seal.
No oil pressure.
Noisy pump.
Cross auger is exceedingly
noisy.
Evidence of oil in feed.
158
PROBLEM
CAUSE
SOLUTION
7. Orbit Motor
Plugged filter.
Replace filter element or clean
filter.
Relief setting too low.
Set relief valve for proper PSI.
Worn pump.
Repair or replace pump.
Worn motor.
Replace worn parts or motor.
Extremely high fluid temperature
causing pump and motor to slip
(temp. increase as pump and
motor wear).
Increase reservoir size and use a
high viscosity index such as
20W40.
Inadequate size oil lines.
Increase oil lines.
Pump cavitation.
Increase oil line size to pump, in
cold weather, use 5W20 oil.
Shaft seized in housing due to
excessive side load or misalignment (Note 500 lb. max. radial
loading on shaft).
Replace housing assembly set if
damaged.
Large contaminating particles in
fluid such as machining chips or
sand - very dirty fluid.
Flush new systems - use better
filtration.
Broken shaft from extreme side
loads or misalignment.
Correct and replace.
Motor runs without turning
shaft.
Broken shaft.
Replace shaft assembly - check
housing for wear and replace if
necessary.
Motor turns in wrong direction
after being replaced.
Hose connections wrong.
Reverse connections.
Leak at shaft.
Worn or cut quad-ring.
Replace quad-ring, polish shaft at
seal area with #600 wet or dry
sanding cloth.
Slow operation.
Motor will not turn.
159
PROBLEM
CAUSE
SOLUTION
7. Orbit Motor (cont'd)
Loose flange.
Tighten.
Damaged seal between housing
flange.
Replace seal. Check housing
surface at seal for sharp nicks or
deep scratches.
Leak in body plug seal.
Replace faulty o-rings.
Leak between housing and
wear plates or between wear
plates and gerotor.
End cap bolts loose.
Tighten the cap screws at gerotor
end of motor - if the threads are
accidentally stripped in the housing,
the hole may be drilled and tapped
deeper and the motor reassembled
w/longer bolts.
Leak between gerotor and
end cap.
Dirt between surfaces.
Reassemble - clean and dry parts.
Scratches or nicks on surfaces.
Polish very carefully on a flat, hard
surface - use #600 or finer abrasive
cloth and very little pressure - avoid
rounding edges.
Cracked front flange.
Use installation bolts which are
too long and bottom against
housing.
Replace flange and use proper size
bolts.
Leak at oil ports.
Poor fittings.
Replace fittings carefully.
Damaged threads.
Replace housing or use nut such
as true seal.
Leak between flange and
housing.
(Note: All motors are tested and
rated of a maximum back pressure of 1000 PSI).
160
PROBLEM
CAUSE
SOLUTION
8. Hoist
Shortage of oil.
Fill up tank.
Air locked in system.
Bleed pump, check joints in low
pressure flexible pipe.
Oil not reaching ram.
Check for shortage of oil, wrong
grade of oil, or faulty pump.
Oil not reaching pump.
Check for stoppage in feed pipe
and oil filter.
Control valve spool clogged.
Clean out valve thoroughly.
Pressure relief valve.
Insert gauge and check pressure,
this should be 1800 psi.
Body creeps slowly downwards.
Dirt wedged under lowering
valve, check valve or overload
valve seat.
Flush valves by opening and
closing quickly with pump running.
If this does not cure the trouble,
remove and clean valve thoroughly.
Sluggish operation.
Shortage of oil.
Refer to 1 a).
Air locked in system.
Refer to 1 b).
Leaking joints.
Tighten all joints.
Worn pump.
Replace if necessary.
Air locked in system.
Refer to 1.
Failure to tip.
Hoist operates jerkily.
161
11
SPECIFICATIONS
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
162
11.1
BOLT TORQUE
CHECKING BOLT TORQUE
The tables shown below give correct torque values for various bolts and capscrews. Tighten all bolts to
the torques specified in chart unless otherwise noted. Check tightness of bolts periodically, using bolt
torque chart as a guide. Replace hardware with the same strength bolt.
ENGLISH TORQUE SPECIFICATIONS
Bolt Torque*
Bolt
SAE 5
SAE 2
SAE 8
Diameter
(N.m) (lb-ft) (N.m) (lb-ft) (N.m) (lb-ft)
"A"
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
3/4"
7/8"
1"
8
13
27
41
61
95
128
225
230
345
6
10
20
30
45
60
95
165
170
225
12
25
45
72
110
155
215
390
570
850
9
19
33
53
80
115
160
290
420
630
17
36
63
100
155
220
305
540
880
1320
12
27
45
75
115
165
220
400
650
970
METRIC TORQUE SPECIFICATIONS
Bolt Torque*
Bolt
10.9
8.8
Diameter
(N.m) (lb-ft) (N.m) (lb-ft)
"A"
M3
M4
M5
M6
M8
M10
M12
M14
M16
M20
M24
M30
M36
.5
3
6
10
25
50
90
140
225
435
750
1495
2600
.4
2.2
4
7
18
37
66
103
166
321
553
1103
1917
1.8
4.5
9
15
35
70
125
200
310
610
1050
2100
3675
1.3
3.3
7
11
26
52
92
148
229
450
774
1550
2710
Torque figures indicated above are valid for non-greased or non-oiled threads and heads unless otherwise specified. Therefore, do not grease or oil bolts or capscrews unless otherwise specified in this
manual. When using locking elements, increase torque values by 5%.
* Torque value for bolts and capscrews are identified by their head markings.
163
11.2
HYDRAULIC FITTING TORQUE
TIGHTENING FLARE TYPE TUBE FITTINGS *
1. Check flare and flare seat for defects
that might cause leakage.
2. Align tube with fitting before tightening.
3. Lubricate connection and hand tighten
swivel nut until snug.
4. To prevent twisting the tube(s), use
two wrenches. Place one wrench on
the connector body and with the
second tighten the swivel nut to the
torque shown.
*
The torque values shown are based on
lubricated connections as in
reassembly.
Tube
Size
OD
Nut Size
Across
Flats
(in.)
(in.)
3/16
1/4
5/16
3/8
1/2
5/8
3/4
7/8
7/16
9/16
5/8
11/16
7/8
1
1-1/4
1-3/8
Tube
Size
OD
Nut Size
Across
Flats
(in.)
(in.)
3/8
7/16
1/2
9/16
3/4
7/8
1-1/16
1-3/16
1-5/16
1-5/8
1-7/8
1/2
9/16
5/8
11/16
7/8
1
1-1/4
1-3/8
1-1/2
1-7/8
2-1/8
Torque
Value*
Recommended
Turns To Tighten
(After Finger
Tightening)
(N.m) (lb-ft) (Flats)
8
12
16
24
46
62
102
122
6
9
12
18
34
46
75
90
1
1
1
1
1
1
3/4
3/4
(Turn)
1/6
1/6
1/6
1/6
1/6
1/6
1/8
1/8
TIGHTENING O-RING FITTINGS *
1. Inspect O-ring and seat for dirt or
obvious defects.
2. On angle fittings, back the lock nut off
until washer bottoms out at top of
groove.
3. Hand tighten fitting until back-up
washer or washer face (if straight
fitting) bottoms on face and O-ring is
seated.
4. Position angle fittings by unscrewing
no more than one turn.
5. Tighten straight fittings to torque
shown.
6. Tighten while holding body of fitting
with a wrench.
*
The torque values shown are based on
lubricated connections as in reassembly.
164
Torque
Value*
Recommended
Turns To Tighten
(After Finger
Tightening)
(N.m) (lb-ft) (Flats)
8
12
16
24
46
62
102
122
142
190
217
6
9
12
18
34
46
75
90
105
140
160
2
2
2
2
2
1-1/2
1
1
3/4
3/4
1/2
(Turn)
1/3
1/3
1/3
1/3
1/3
1/4
1/6
1/6
1/8
1/8
1/12
12
INDEX
I
P
PAGE
PAGE
Fifth Wheel ............................................... 99
Hydraulic Schematics ............................. 138
King Pin and Fifth Wheel Plate ................ 98
Slack Adjusters ...................................... 113
Manual and Automatic Slack
Adjuster Maintenance ....................... 114
Rockwell Automatic Slack Adjuster .. 113
Suspension System ............................... 123
Air Ride Suspension ......................... 123
Mechanical Suspension ................... 127
Suspension System Schematic ........ 128
Tire Wear Patterns ................................ 129
Tires ...................................................... 108
Torque Specification Summary ............... 96
Wheel Hubs/Bearings ............................ 102
Wheels .................................................. 106
Introduction .................................................... 9
M
Maintenance Unloading System ................. 144
Airlock ................................................... 146
Air System Relief Valves ....................... 148
Blower Oil Changing and Breather
Cleaning ................................................ 144
O
Operation Guidelines .................................... 22
Break-In ................................................... 24
Controls ................................................... 35
Hooking Up/Unhooking Trailer or Pup ..... 29
Hooking Up ......................................... 29
Pup ................................................ 31
Trailer ............................................ 29
Unhooking .......................................... 33
Pup ................................................ 34
Trailer ............................................ 33
Machine Placement ................................. 40
Operation ................................................ 44
Optional Equipment ................................. 71
Pre-Operation Vehicle Inspection
Procedure ........................................... 26
Terminology ............................................. 23
To the New Operator or Owner ............... 22
Transporting ............................................ 68
Braking Guidelines ............................. 69
Operating Instructions ........................ 68
Tires ................................................... 70
S
Safety ........................................................... 10
General Safety ........................................ 11
Hydraulic Safety ...................................... 14
Maintenance Safety ................................. 14
Operating Safety ..................................... 12
Safety Signs ............................................ 15
Sign-Off Form .......................................... 16
Tire Safety ............................................... 15
Travel Safety ........................................... 15
Unloading Safety ..................................... 13
Safety Sign Locations ................................... 17
Service and Maintenance ............................. 73
Service .................................................... 73
Fluids and Lubricants ......................... 73
Greasing ............................................. 73
Hydraulic System ............................... 74
Specifications ............................................. 162
Bolt Torque ............................................ 163
Hydraulic Fitting Torque ........................ 164
P
T
Periodic Maintenance and Adjustments ....... 96
ABS Schematics .................................... 135
ABS Vehicle Control System ................. 133
Air Chamber/Spring Break .................... 122
Air System ............................................. 131
Air System Functional ...................... 131
Air System Inspection ....................... 131
Air System Schematic ...................... 132
Axle Alignment ...................................... 100
Brakes ................................................... 110
Electrical System ................................... 136
Electrical Schematics ....................... 137
Trailer Servicing Intervals ............................. 75
Servicing Record Summary
(Lubrication) ............................................ 86
Trouble Shooting ........................................ 149
U
Unloading System Servicing ........................ 87
Service Record ........................................ 95
Servicing Intervals ................................... 87
165
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Please use this form to submit Comments, Errors, Omissions, and Suggestions on this Manual. We
would like your comments on things you do not like about this manual, as well as things you do like about
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Please send this form via mail/e-mail or fax to Walinga Inc., or forward it to the closest Walinga Dealer or
Sales Representative. Thank you for your comments.
MANUAL NO. 34-____________________-6.
PAGE NO.________
_______________________________________________________________
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ADDITIONAL COMMENTS: _____________________________________________________________
____________________________________________________________________________________
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CUSTOMER INFORMATION:
COMPANY NAME: ______________________________________________________________
CONTACT NAME: ______________________________________________________________
STREET ADDRESS: ____________________________________________________________
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COUNTRY: ___________________________________ POSTAL CODE: __________________
PHONE NO: _____-_____-________ FAX NO: ____-____-______
E-MAIL: [email protected]_________________________________
SEND TO: Walinga Inc.
Marketing Department
RR# 5 Guelph Ontario
Canada, N1H 6J2
FAX TO: (519) 824-5651
E-MAIL: [email protected]
Head Office:
RR#5
Guelph, Ontario,N1H 6J2
PHONE (888) 925-4642
FAX (519) 824-5651
www.walinga.com
FACTORY DISTRIBUTION AND SERVICE CENTRES:
IN CANADA:
70 3rd Ave. N.E. Box 1790 Carman, Manitoba Canada R0G 0J0
Tel (204) 745-2951 Fax (204) 745-6309
220 Frontage Rd. Davidson, Saskatchewan Canada S0G 1AO
Tel: (306) 567-3031 Fax: (306) 567-3039
IN USA:
1190 Electric Ave. Wayland, MI. USA 49348
Tel (800) 466-1197 Fax (616) 877-3474
579 4th Street NW
Sioux Center, Iowa USA 51250
Tel (800) 845-5589 Fax (712) 722-1128
PRINTED IN CANADA
ISSUE DATE: March,1999
REPRINT: October, 2007 PS .5C
Bag Bulk Operators Manual
OM PART# 34-18158-6
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