Tuthill T850 Operator's Manual
Tuthill T850 is a rotary positive displacement truck blower, specifically designed for truck applications such as vacuum tankers, dry bulk tankers, tank trailers, and other industrial uses. Its key capabilities include:
High-performance vacuum and pressure generation, enabling efficient material transfer and discharge Reliable and durable construction, ensuring longevity and minimizing downtime Compact and lightweight design, allowing for easy integration into various truck configurations Versatile performance, suitable for a wide range of materials, including liquids, solids, and powders Easy maintenance and serviceability, reducing operational costs and maximizing uptime
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M-D Pneumatics
™
Rotary Positive Displacement Truck Blower
WARNING: Do Not Operate Before Reading Manual
Manual 2020 0217 ENG
T850 / T1050 - Standard Weight
OPERATOR’S MANUAL
Copyright © 2017 Tuthill Vacuum & Blower Systems
All rights reserved. Product information and speci fi cations subject to change.
Tuthill Vacuum & Blower Systems tuthillvacuumblower.com 800.825.6937
Disclaimer Statement:
All information, illustrations and speci fi cations in this manual are based on the latest information available at the time of publishing. The illustrations used in this manual are intended as representative reference views only. Products are under a continuous improvement policy. Thus, information, illustrations and/or speci fi cations to explain and/or exemplify a product, service or maintenance improvement may be changed at any time without notice.
Rights Reserved Statement:
No part of this publication may be reproduced or used in any form by any means – graphic, electronic or mechanical, including photocopying, recording, taping or information storage and retrieval systems – without the written permission of Tuthill Vacuum & Blower Systems.
Copyright © 2017 Tuthill Vacuum & Blower Systems
All rights reserved. Product information and speci fi cations subject to change.
Table of Contents
Introduction .................................................................................. 1
Safety ............................................................................................ 2
Graphic Conventions in this Manual ..................................................... 2
Safety Instructions................................................................................. 3
Safety Precautions ..................................................................... 3
Installation .................................................................................... 5
Safety Checklist .................................................................................... 5
Specifi cations ........................................................................................ 6
Outline Drawings ................................................................................... 7
PTO Selection for Transmission ............................................................. 8
Engine Speed ....................................................................................... 8
Pressure Relief Valve ............................................................................ 8
Air Filter ................................................................................................. 8
Suction and Discharge Piping .............................................................. 8
Mounting Bracket .................................................................................. 8
Check Valve .......................................................................................... 8
Muffl ers and Discharge Filtration .......................................................... 8
Vacuum Valve ........................................................................................ 9
Performance Curves ........................................................................... 10 i Operator’s Manual 2020 0217 ENG
Table of Contents
Lubrication .......................................................................................... 11
Filling Procedure ...................................................................... 11
Operation .................................................................................... 13
Maintenance ............................................................................... 14
Regular Maintenance .......................................................................... 14
Disassembly and Reassembly .................................................. 15
Disassembly ........................................................................................ 15
Assembly ............................................................................................ 16
Gear End Assembly ................................................................. 16
Drive End Assembly ................................................................. 17
Checking Interlobe Clearance ................................................. 18
Assembly Clearances ................................................................ 20
Special Tool Drawings ............................................................... 21
Assembly Drawing and Parts List ............................................ 23
Assembly Drawing .............................................................................. 23
Parts List ............................................................................................. 24
Blower Installation Components ......................................................... 25 ii Operator’s Manual 2020 0217 ENG
CONGRATULATIONS on the purchase of a new
Tuthill Truck Blower. Please examine the blower for shipping damage, and if any damage is found, report it immediately to the carrier. If the blower is to be installed at a later date, make sure it is stored in a clean, dry location and rotated regularly.
Make sure covers are kept on all openings. If the blower is stored outdoors, be sure to protect it from weather and corrosion.
Tuthill Truck Blowers are built to exacting standards and, if properly installed and maintained, will provide many years of reliable service. Read and follow every step of these instructions when installing and maintaining the blower.
N OTE: Record the blower model and serial numbers of the machine in the
OPERATING DATA form on the inside back cover of this manual. Use this identi cation on any replacement part orders, or if service or application assistance is required.
01
INTRODUCTION
1 Operator’s Manual 2020 0217 ENG
2
02
SAFETY
GRAPHIC CONVENTIONS IN THIS
MANUAL
The following hazard levels are referenced within this manual:
!
DANGER
Indicates a hazardous situation that, if not avoided, will result in death or serious injury.
!
WARNING
Indicates a hazardous situation that, if not avoided, could result in death or serious injury.
!
CAUTION
Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
N OTE: Indicates a procedure, practice, or condition that should be followed in order for the equipment to function in the manner intended.
!
CAUTION
Read manual before operation or bodily harm may result.
Attention should be given to the safety related sections of this manual.
Indicates a situation that can cause damage to the engine, personal property, and/or the environment or cause the equipment to operate improperly.
Operator’s Manual 2020 0217 ENG
WARNING WARNING WARNING
02
Safety
CAUTION
Keep body and clothing away from machine openings.
Keep body and clothing away from drive shaft.
SAFETY INSTRUCTIONS
1. Do not operate before reading the enclosed instruction manual.
2. Use adequate protection, warning and safety equipment necessary to protect against hazards involved in installation and operation of this equipment.
The above safety instruction tags were attached to your unit prior to shipment. Do not remove, paint over or obscure in any manner.
Failure to heed these warnings could result in serious bodily injury to the personnel operating and maintaining this equipment.
!
WARNING
• Keep hands and clothing away from rotating machinery, inlet and discharge openings.
• Blower and drive mounting bolts must be secured.
• Drive belts and coupling guards must be in place.
• Noise level may require ear protection.
• Blower heat can cause burns if touched.
Hearing
Protection
Required
Do not touch hot surfaces.
Safety Precautions
For equipment covered speci fi cally or indirectly in this operator’s manual, it is important that all personnel observe safety precautions to minimize the chances of injury. Among many considerations, the following should particularly be noted:
• Rotating shafts can be dangerous. You can snag clothes, skin, hair, hands, etc. This can cause serious injury or death.
• Do not work under the vehicle while the engine is running.
• Do not work on a shaft (with or without a guard) while the engine is running.
• Do not engage or disengage driven equipment by hand from under the vehicle while the engine is running.
• In order to avoid becoming entangled, install the power take off and/or shaft behind the frame rail, tanks, battery box, etc.
• If power take off and/or shaft are still exposed after installation, install a guard.
• Install a support strap when servicing a drive shaft to prevent personal injury.
A SERIOUS OR FATAL INJURY CAN OCCUR:
• If you lack proper training
• If you fail to follow proper procedures
• If you do not use proper tools and safety equipment
Operator’s Manual 2020 0217 ENG 3
02
Safety
• If you assemble drive line components improperly
• If you use incompatible drive line components
• If you use worn out or damaged drive line components
• If you use drive line components in a non-approved application
This manual contains safety instructions. Read, understand and follow this manual.
• Get proper training
• Learn and follow safe operating procedures
• Use proper tools and safety equipment
• Use proper components in good condition
4 Operator’s Manual 2020 0217 ENG
03
INSTALLATION
SAFETY CHECKLIST
Complete this checklist before operating the blower.
TRUCK NUMBER
GEARBOX NUMBER
P.T.O. NUMBER
P.T.O. RATIO
Is Tuthill mounting kit used?
Is ratio and horsepower correct for PTO?
Mount PTO as per manufacturer’s recommendations and re fi ll transmission.
Ensure oil levels are at the center of the sight glass when blower is not running.
Without drive line connected, can the blower be rotated by hand?
Is the drive line installed at the correct angle and phase with all fasteners secured?
Ensure PTO rotates blower in the correct direction indicated by arrow.
Ensure air inlet fi lter is connected and located away from truck exhaust.
Remove Camlock dust cap, and discharge piping open to atmosphere.
With tractor engine at idle, slowly engage PTO.
Check for correct rotation.
Slowly bring blower up to operating speed.
Operator’s Manual 2020 0217 ENG
BLOWER MODEL NUMBER
BLOWER SERIAL NUMBER
DATE INSTALLED
INSPECTED BY
Check for vibration, mechanical noise, oil leaks and mounting integrity.
Stop blower, connect blower discharge hose to trailer, and run blower at operating pressure of trailer for 15 minutes at normal speed.
Does relief valve allow 15 psig (1 bar g) pressure?
Does engine maintain correct RPM throughout test?
Shut down machine. Check Shur-Melt ® plugs, relief valve, fi lter, piping, and oil sumps for integrity.
Is correct engine speed label visible in cab?
5
03
Installation
!
WARNING
The blower and accessories will become hot enough to cause serious skin burns on contact.
Rotating machinery is dangerous.
Always wear ear protection when near an operating blower.
SPECIFICATIONS
T850
T1050
MODEL AIR FLOW RANGE
225 – 565 CFM
(527 – 1,700 m³/h)
450 – 1,200 CFM
(764 – 2,039 m³/h)
MAXIMUM
PRESSURE
20 psig
(1.37 bar g)
18 psig
(1.24 bar g)
MAXIMUM
VACUUM
17 inch-Hg
(575 Mbar)
17 inch-Hg
(575 Mbar)
RPM RANGE
1,000 – 3,000
1,450 – 3,000
N OTE: Reduce the maximum operating pressure by 1 psi (0.068 bar) for each 2,000 feet (610 m) of elevation above sea level.
Example: At an altitude of 4,000 feet (1,219 m), the maximum working pressure of the blower will decrease by 2 psi (0.137 bar).
Table 3-1 – Specifi cations
6 Operator’s Manual 2020 0217 ENG
OUTLINE DRAWINGS
Dimensions shown are not on a controlled document and as such are subject to change.
Certi fi ed drawings are available through your local
Tuthill Truck Blower Distributor. Dimensions are shown in inches and millimeters.
OIL FILL
LOCATION
HORIZONTAL
AIR FLOW
OIL LEVEL
GAUGE
VERTICAL
AIR FLOW
OIL FILL
LOCATION
VERTICAL
AIR FLOW
8 × 1/2-13 UNC
5.25
133
2.68
68
OIL DRAIN
HORIZONTAL
AIR FLOW
A
B
8 × 5/8-11 UNC
3/8" KEY
Ø 1.625"
C
MODEL
T850
T1050
A
22.69
576
25.19
640
B
12.48
317
13.73
349
C
11.72
298
12.13
308
Figure 3-1 – Outline Drawings
03
Installation
Operator’s Manual 2020 0217 ENG 7
03
Installation
PTO SELECTION FOR
TRANSMISSION
Blower speed and pressure require adequate horsepower and torque. See Performance Curves on page 10 .
Engine speed and blower speed require the adequate ratio PTO be installed for proper blower operation.
6- and 8-bolt transmissions provide the proper space for blower installation.
ENGINE SPEED
Keep engine speed constant when the blower is in the operating cycle. Install a constant-speed governor or throttle control system to ensure proper blower operation.
PRESSURE RELIEF VALVE
Size the pressure relief valve for the correct air fl ow and pressure rating. Install the valve as close to the blower as possible and before the check valve.
Ensure that pipe compound is used on the threads of the male end of the relief valve to seal against air leakage.
An undersized or improperly set relief valve will cause the blower to operate at higher temperatures. This can cause the blower to overheat, causing irreparable damage.
AIR FILTER
Select a fi lter suitable for the air fl ow requirement of the application. Use air fi lters on food and plastic products to prevent contamination.
An undersized air fi lter will cause the blower to operate at higher temperatures. This can cause blower to overheat, causing irreparable damage.
SUCTION AND DISCHARGE PIPING
All piping should be free and clear of any welding slag or foreign material.
The suction piping requirement is a minimum of
5 in. (127 mm) diameter for proper fl ow to the blower.
Discharge piping is a minimum of 4 in. (102 mm) diameter.
Do not use a rubber elbow in the suction line during vacuum operation. The elbow will fail causing the blower to overheat. This will cause damage to the blower.
MOUNTING BRACKET
To reduce stress on the blower housing, be sure to properly mount the blower with the correct bracket.
CHECK VALVE
Minimum restriction for application. Mount downstream of the relief valve. Size the valve for maximum air fl ow (CFM or m³/hr).
MUFFLERS AND DISCHARGE
FILTRATION
Minimum restriction for application. Mount downstream of the relief valve.
8 Operator’s Manual 2020 0217 ENG
03
Installation
VACUUM VALVE
Size for proper air fl ow and vacuum rating.
This valve should be located before the blower inlet fi lter. This valve is normally mounted on the trailer.
VERTICAL FLOW
CW ROTATION
To properly protect the blower from overheating when vacuum loading, install a vacuum valve.
CCW ROTATION
HORIZONTAL FLOW
CW ROTATION
LEFT DRIVE
DISCHARGE
INTAKE
DISCHARGE
INTAKE
Figure 3-2 – Flow Direction and Rotation
BOTTOM DRIVE
DISCHARGE
TOP DRIVE
INTAKE
INTAKE
DISCHARGE
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03
Installation
PERFORMANCE CURVES
PERFORMANCE CURVES (US)
600
500
400
300
200
T850 PRESSURE CURVE
1000
900
800
AIRFLOW BASED UPON INLET
CONDITIONS OF: 14.7 PSIA & 70° F
# PSIG DISCHARGE PRESSURE
700
2
5
8
12
15
18
20
PSIG
12
8
5
2
PSIG
20
18
15
1000 1500 2000
RPM
2500 3000
T850 VACUUM CURVE
1000
900
AIRFLOW BASED UPON
INLET: 70° F
DISCHARGE: 29.92” Hg Abs
800
700
600
500
400
300
200
1000 1500 2000
RPM
2500
2
6
10
14
17
In. Hg
In. Hg
17
14
10
6
2
3000
PERFORMANCE CURVES (METRIC)
T850 PRESSURE CURVE
1750
1500
1250
AIRFLOW BASED UPON INLET
CONDITIONS OF: 1 bar & 20° C
DENSITY: 1.2 kg/m³
BAR DISCHARGE PRESSURE
0.25
0.75
1.00
1.25
1.38
bar
1000
750
500
250
0 bar
1.38
1.25
1.00
0.75
0.25
1000 1500 2000 2500
RPM
3000
T850 VACUUM CURVE
1750
1500
1250
AIRFLOW BASED UPON
INLET: 20° C DISCHARGE: 1 bar
DENSITY @ 20° C & 1 bar 1.2 kg/m³
MBAR INLET VACUUM
200
300
400
500 mbar
1000
750
500
250
0 mbar
500
400
300
200
3500
1000 1500 2000
RPM
2500 3000 3500
KW
25
20
15
10
5
0
40
30
20
10
0
KW
80
70
60
50
BHP
100
75
50
25
0
50
25
0
BHP
100
75
Figure 3-3 – Performance Curves
10
1350
1200
1050
900
750
600
450
300
150
0
T1050 PRESSURE CURVE
AIRFLOW BASED UPON INLET
CONDITIONS OF: 14.7 PSIA & 70° F
# PSIG DISCHARGE PRESSURE
2
5
8
12
15
15
18
PSIG
8
5
12
10
2
PSIG
18
15
1000 1500 2000
RPM
2500 3000
T1050 VACUUM CURVE
1350
1200
1050
900
AIRFLOW BASED UPON
INLET: 70° F
DISCHARGE: 29.92” Hg Abs
750
600
450
300
150
0
1000 1500 2000
RPM
2500
2
5
8
10
12
16
17
In. Hg
3000
10
8
5
2
In. Hg
17
16
12
30
20
10
0
BHP
60
50
40
90
75
60
45
30
BHP
120
105
15
0
2250
2000
1750
1500
1250
1000
750
500
250
0
T1050 PRESSURE CURVE
AIRFLOW BASED UPON INLET
CONDITIONS OF: 1 bar & 20° C
DENSITY: 1.2 kg/m³
MBAR DISCHARGE PRESSURE
0.25
0.75
1.00
1.25
1.38
bar bar
1.38
1.25
1.00
0.75
0.25
1000 1500 2000 2500
RPM
3000
2250
2000
1750
1500
1250
1000
750
500
250
0
T1050 VACUUM CURVE
AIRFLOW BASED UPON
INLET: 20° C DISCHARGE: 1 bar
DENSITY @ 20° C & 1 bar 1.2 kg/m³
MBAR INLET VACUUM
200
300
400
500 mbar mbar
500
400
300
200
3500
KW
30
25
20
5
0
15
10
KW
70
60
50
40
30
20
10
0
1000 1500 2000 2500
RPM
3000 3500
Operator’s Manual 2020 0217 ENG
03
Installation
LUBRICATION
Every Tuthill blower is factory-tested, oil-drained, and shipped dry. Fill both oil reservoirs to the proper level before operation.
Every Tuthill Truck Blower is supplied with two
1-quart containers of Tuthill PneuLube™ ISO 100 synthetic oil. Before fi lling the blower, check Table
3-2 to con fi rm the amount of oil required.
For applications requiring food-grade lubricant, use only Tuthill PneuLube FG synthetic oil.
N OTE: If installing a Tuthill Truck Blower for vertical air fl ow (optional), additional oil than what is included with the blower will be needed for installation.
Tuthill PneuLube is available from your authorized Tuthill Truck Blower
Distributor.
Filling Procedure
To ensure the proper oil level, always use this fi lling procedure: drive end plates.
2. Slowly pour oil through fi ll until oil appears in the oil sight glass. Bring the oil level to the center of the sight glass.
3. Verify the oil level is at the proper level in both the gear end and drive end sight glasses. step 1.
Never mix oil types or grades in a Tuthill Truck
Blower. Mixing lubricants in the blower will result in gear and bearing failure.
Do not start the blower until you are certain that oil is in BOTH ends of the blower. Check
BOTH sight glasses to ensure that oil levels are correct before starting. Operation of the blower without proper lubrication will cause the blower to fail and void its warranty.
!
WARNING
NEVER ATTEMPT TO CHANGE OIL WHILE
THE BLOWER IS IN OPERATION. Failure to heed this warning could result in damage to the equipment and/or serious personal injury.
Oil level must be checked while the blower is not running and truck is parked on a level surface.
Operator’s Manual 2020 0217 ENG 11
03
Installation
HORIZONTAL AIR FLOW
(STANDARD)
VERTICAL AIR FLOW**
(OPTIONAL)
FILL PLUGS
SIGHT GLASSES
Fill to center while parked on a level surface.
MAGNETIC
DRAIN PLUGS
Always on bottom of blower
** If installing a T850 blower for vertical air fl ow (optional), additional oil than what is included with the blower will be needed for installation. Tuthill PneuLube is available from your authorized Tuthill Truck Blower
Distributor.
Figure 3-4 – Oil Fill Locations
Drive end
Non-drive
(gear) end
HORIZONTAL
AIR FLOW
(STANDARD)
VERTICAL
AIR FLOW
(OPTIONAL)
0.75 qt (0.71 L) 1.2 qt (1.1 L)
0.63 qt (0.60 L)
Table 3-2 – Lubrication Capacities
1.1 qt (1.0 L)
N OTE: Oil capacities are based on fi dry condition. Less oil may be needed depending on emptiness of oil reservoirs after draining.
12 Operator’s Manual 2020 0217 ENG
1. Inspect the blower mounting, drive line, PTO, and air fi lter for damage.
2. Remove the Camlock dust cap and connect the hot air hose.
3. Follow the trailer instructions regarding product hose connection and valve operation.
4. Slowly engage PTO with the engine at idle, bring it up to operating speed, and lock the engine at the recommended speed (shown in the cab).
5. Unload the trailer as per trailer manufacturer’s recommendation. Do not exceed the maximum tank pressure.
6. While discharging, visually check the blower for vibration, mechanical noise or excessive heat.
7. If the relief valve is opening, adjust the proportioning valve to reduce the tank pressure.
8. Reduce pressure to zero as per the trailer manufacturer’s instructions.
9. Disengage PTO. No cool-down period is required.
10. Disconnect the blower hose and replace the
Camlock dust cap.
Operator’s Manual 2020 0217 ENG
04
OPERATION
!
WARNING
The blower and accessories will become hot enough to cause serious skin burns on contact.
Rotating machinery is dangerous.
Always wear ear protection when near an operating blower.
13
05
MAINTENANCE
REGULAR MAINTENANCE
A well-designed maintenance program will add years of service to the blower.
Check a newly installed blower frequently during the fi rst month of operation, especially lubrication.
Check the oil level and add oil as needed.
Complete oil changes are recommended every
500 operating hours, or more frequently depending on the type of oil and operating temperature.
The following is recommended as a minimum maintenance program. An oil analysis program is recommended.
DAILY
1. Check and maintain oil level, and add oil as necessary.
restriction indicator.
WEEKLY MONTHLY SEMIANNUALLY
1. Clean the air fi lter.
A clogged air fi lter can seriously affect the ef fi ciency of the blower and cause overheating and oil usage.
2. Check the relief valve to make sure it is operating properly.
1. Inspect the entire system for leaks.
1. Inspect the drive line bearings.
2. Inspect the condition of the oil and change if necessary.
2. Change the oil even if
500 operating hours has not been reached.
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06
DISASSEMBLY AND REASSEMBLY
DISASSEMBLY
N OTE: Before removing any parts, match-mark each component with a punch. This will allow the blower to be reassembled in the same position. Match-mark the covers, end plates, housing, cover extension, and both rotors.
1. Remove oil drain plugs and vent plugs from both ends of the blower.
2. Remove the drive key from the drive shaft.
Remove the gear end cover. Remove the drive end cover. This is best accomplished by using two small pry bars at the dowel pins. Tap on the cover with a mallet while putting pressure on the cover with the pry bar. The cover will slowly move off the dowel pins. Inspect the seal area on the drive shaft for grooves and burrs. Remove the drive shaft seal from the drive end cover. Remove the oil slinger assemblies.
3. Remove the bolts and washers from the rotor shafts on the gear end. Remove the timing gear from the rotor shaft by using a gear puller
(see Figure 6-1) . Rotate the timing gear to the right and left, 3 teeth each direction from the timing marks on the face of the gears, as the gear is being removed. Inspect the gear teeth for wear and pitting. Inspect the rotor shaft keyway for wear and damage.
1 7/8”
15/16”
3/4”
Drill Ø 11/16”
Tap 3/4” - 16 UNF
Snap-On P/N CJ83-3 or equivalent
Snap-On
P/N CJ66-15-3 or equivalent
7/16” × 1” Slot
(Thru)
2”
1”
2 5/
8”
5 1/
4”
Figure 6-1 – Gear Puller
Blower rotors must rotate freely in order for timing gears to be removed correctly. If blower rotors do not move freely both timing gears must be pulled simultaneously. If gears are removed improperly, this will cause damage to the rotor keyways and possibly to the timing gears.
4. Remove the bolts from the extension covers.
Using pry bars and a mallet, slowly remove the extension cover from the gear end and drive end plates as described in step 2. Remove the gasket from the end plates on both the gear end and drive end.
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06
Disassembly and Reassembly
5. Use jacking screws on the end plate from the housing. The rotors will be removed from the housing when the gear end end plate is removed. Use a gear puller and attach to the gear end plate with the center of the puller in the center of the rotor shaft. Apply pressure, pushing the rotor away from the end plate.
Repeat this process until both rotors have been removed. Remove the inner sleeve of the seal housing from the rotor shafts with a puller.
Inspect and clean the seal area on the rotor shaft.
6. Remove the bearings, seal housing, slingers, bearing shield, and bearing shims from end plate. Use a hammer and bar to drive the bearing and seal housing from the end plates.
Inspect the bearing wear pattern and seal for wear and heat marks. Clean all parts before inspecting. Check the rotor bearings for proper spinning. Check the seal fi ts of the seal housing on the rotor shaft. Check the bearing bores and seal bores in the end plate for spinning of bearings and seal housings.
ASSEMBLY
The components in Table 6-1 are available as a kit from Tuthill Vacuum & Blower Systems. These components are replaced during a normal blower overhaul. These parts, at minimum, should be on hand prior to assembly.
DESCRIPTION
Bearing
Bearing
Bearing Shield
Seal Assembly
Gasket
Drive Shaft Seal
O-Ring
Port Gasket
Timing Adjustment Shim
Bearing Shim
Table 6-1 – Overhaul Kit
16
QTY
2
2
2
4
2
1
2
2
1
8
Gear End Assembly
1. Check all parts to make sure the parts are clean and free of burrs or nicks that may have occurred when the blower was being disassembled. Check the repair kit for the correct parts needed to complete the assembly of the unit. Make sure you have the proper tooling and training required to assemble the blower. Take the time to read and completely understand the instruction manual before you begin.
2. Seat the rotors on a fi xture with the gear end of the rotors upward and in the “T” position, as shown in Figure 6-2 . Place a set of 0.006 in. shims on each rotor. Make sure the drive rotor is in the correct location for the proper fl ow and rotation required for the application.
DRIVE DRIVEN
Figure 6-2 – Correct Positioning of Rotor Keyways for
Assembly
N OTE: Use Loctite thread sealant on all bolts and capscrews that are assembled without lock washers.
3. Install the end plate onto the rotor. Make sure the shims on the rotor are still in place. Using a seal pressing tool (see Figure 8-1 for detail), press the seal assembly onto the rotor shafts.
Press the oil shield onto the rotor shafts.
N OTE: The oil shield is part of the seal assembly but must be pressed on after the seal assembly is installed. On lip seal units, the seal must be pressed into the seal housing after the end plates have been installed onto the housing and before the slinger is installed on the rotor shaft.
Operator’s Manual 2020 0217 ENG
06
Disassembly and Reassembly
4. Lay a straightedge across the top of the rotor shafts. Put a depth micrometer on the straightedge and measure the distance to the bearing shoulder on the end plate and the distance to the inner seal housing shoulder.
Calculate the difference. This will be the amount of bearing shim needed for the proper clearance on the gear end. Install bearing shims and press in the gear end bearings until the bearing bottoms are against the bearing shims. Remove the assembly from the fi xture and remove 0.006 in. of shim from between the end plate and the rotors.
Drive Gear Driven Gear
Figure 6-4 – Timing Marks Matched
Press the timing gear assembly onto the rotor with the timing marks aligned on the gear as shown in Figure 6-5 .
Figure 6-3 – Using Depth Micrometer to Determine End
Clearance
5. Install the housing to the gear end end plate, and tighten the bolts to secure the end plate to the housing. Install the gasket onto the end plate. Install the extension cover onto the end plate and tighten securely. Check the gear end clearance between the rotors and end plate.
N OTE: Install the bearing retaining washer at this time if the blower requires retainers.
Then, check the gear end clearance of the unit.
6. Install the gear key into the keyway of each rotor. Make sure the keyways are in the correct position for the timing gears, as shown in
Figure 6-4 .
Drive Gear Driven Gear
Figure 6-5 – Timing Marks Advanced 3 Teeth (Reference
Marks Matched)
Install the rotor shaft washer and tighten.
Check the gear end clearance and record it.
N OTE: If gear end clearances change, bearing shims may need to added or removed to maintain proper clearances.
Drive End Assembly
1. Remove the blower from the fi xture and turn until the drive shaft is facing upward. With a straightedge placed on the blower housing, check the clearance between the rotor and the straight edge using feeler gauges. Make sure the drive end has the proper clearances.
Operator’s Manual 2020 0217 ENG 17
06
Disassembly and Reassembly
2. Place the end plate onto the blower housing.
Tighten the end plate securely to the housing.
Press the seal assembly onto the rotor until the assembly bottoms on the rotor. Continue the process until both seal assemblies are installed. Press the oil shield into place.
Figure 6-7 – Extension Cover Installed Drive End
6. Install the pipe plugs and oil sight glasses into their proper locations, which are determined by the direction of fl ow of the blower.
Figure 6-6 – Seal Assembly Installed into End Plate
N OTE: The oil shield is part of the seal assembly but must be pressed on after seal assembly is installed. On lip seal units, the seal must be pressed into the seal housing after the end plates have been installed onto the housing and before the slinger is installed on the rotor shaft.
3. Install the bearing shields into the end plate.
Press the bearing into the end plate until the bearing bottoms to the shoulder of the end plate. Install the gasket and the extension cover, and tighten securely to the end plate.
4. Install the drive end spacer onto the rotor shafts. Position the oil slinger assembly onto the drive shaft of the blower. Install the oil slinger assembly onto the driven rotor. Install rotor washer and bolt. Tighten the bolt securely to the shaft.
5. Install O-ring into drive end cover. Install the drive cover onto the extension cover. Tighten the cover securely to cover the extension.
Install the drive shaft seal into the drive cover.
When installing drive shaft seal, use care not to damage the lip of the seal on the keyway of the drive shaft. Make sure keyway is free of burrs and sharp edges.
Checking Interlobe Clearance
1. The outer gear shell is fastened to the inner hub with four cap screws and located with two dowel pins. Adding and removing shims between the gear shell and the inner hub moves the gear shell axially. The helix causes the gear to rotate, which changes the clearance between the rotor lobes. Adding a shim of 0.030 in. thickness will change the rotor lobe clearance by approximately 0.009 in.
The timing shim is formed from a number of
0.003 in. shims that have been laminated together. They are easily peeled off as necessary or added to correct timing. Use feeler gauges to check the clearance at AA
(right-hand reading) and BB (left-hand reading)
(see Figure 6-1) . The clearance should be adjusted so they are as equal between all lobes as possible – usually between 0.002 and
18 Operator’s Manual 2020 0217 ENG
0.003 in. For best results, use feeler gauges no larger than 0.006 in.
Example: If AA reading is 0.020 in. and BB reading is 0.008 in., by removing 0.021 in. shims the reading will change 0.006 in. AA should read 0.014 in. and BB should read
0.014 in.
Remember to place timing marks on center and match when removing or installing a gear
(see Figure 6-4 and Figure 6-5 ).
N OTE: Once timing of the rotor has been completed, check tip-port and tip-dowel clearance and record along with gear end and drive end clearances. Tip-dowel location is when the tip of the rotor is lined up with the dowel pins in the housing. Check the clearance as close to the dowel as possible.
Record A-A
Reading Here
A
B
B
A
A
B
B
A
Record B-B
Reading Here
Long
Feeler
Gauge
B
A
A
B
B
A
A
B
06
Disassembly and Reassembly
3. Install the pipe plugs and sight glasses to the proper location. The direction of fl ow of the blower will determine their location.
Figure 6-8 – Checking Interlobe Clearance
2. Install the rotor washer and bolt on the gear end rotor shafts. Tighten securely and install the O-ring into the cover. Install the gear end cover to cover the extension, and tighten the bolts so the cover is fastened securely to the cover extension.
Operator’s Manual 2020 0217 ENG 19
7
ASSEMBLY CLEARANCES
MODEL
T850
T1050
GEAR END DRIVE END
0.004 – 0.009 in.
(0.10 – 0.23 mm)
0.004 – 0.009 in.
(0.10 – 0.23 mm)
0.013 – 0.018 in.
(0.33 – 0.46 mm)
0.015 – 0.020 in.
(0.38 – 0.51 mm)
SUM OF
GEAR END +
DRIVE END
0.021 – 0.022 in.
(0.53 – 0.56 mm)
0.023 – 0.024 in.
(0.58 – 0.61 mm)
INTERLOBE
0.013 – 0.017 in.
(0.33 – 0.43 mm)
0.013 – 0.017 in.
(0.33 – 0.43 mm)
TIP-PORT
0.006 – 0.010 in.
(0.15 – 0.25 mm)
0.006 – 0.010 in.
(0.15 – 0.25 mm)
TIP-DOWEL
0.003 – 0.007 in.
(0.08 – 0.19 mm)
0.003 – 0.007 in.
(0.08 – 0.19 mm)
20 Operator’s Manual 2020 0217 ENG
See Figure 8-1 on the following page.
8
SPECIAL TOOL DRAWINGS
Operator’s Manual 2020 0217 ENG 21
8
Special Tool Drawings
SEAL & BEARING INSTALLATION TOOL DRAWINGS
All dimensions are shown in inches and millimeters
.
HYDRAULIC PRESS ROD
1/2-13UNC-2A
BOTH ENDS 0.500”
12.7
2.000”
50.8
DRIVE SHAFT SEAL TOOL
3.625
92.1
3.000
76.2
0.300
7.6
A
2.000”
50.8
CLEARANCE SETTING SPACER
1.200
30.5
MATERIAL:
TOOL STEEL
HEAT TREATED
TO 40-42 Rc
A
1.628
41.4
48.5
± .008
± .02
2.365
60.1
SECTION A-A
END PLATE PRESS TOOL
.040 × 45°
1.0 × 45°
A
1.954
49.6
2.363
60.0
SECTION A-A
END PLATE SEAL PRESS TOOL
A
ø 3.502
ø
89
0.200
5.1
1.750
44.5
3.496
2.850
88.8 72.4
2.750
69.9
2.375
60.3
ø 0.258
ø
6.6
ø 4.321
+0.001
ø 109.8
-0.000
+0.025
-0.000
SECTION A-A
0.375
9.5
.125 × 45°
3.2 × 45°
GEAR PRESS SPACER LONG SHAFT BEARING PRESS TOOL
ø 2.500
ø
63.5
ø 0.531
ø
13.5
2.750
69.9
1.750
44.5
0.220
5.6
4.125
104.8
.040 × 45°
1.0 × 45°
1.990
± .005
± .013
R 0.125
3.2
.040 × 45°
1.0 × 45°
SECTION A-A
0.500
12.7
ROTOR SHAFT LIP SEAL PRESSING TOOL PISTON CARRIER & SLINGER INSTALLATION TOOL
9.750
247.7
9.300
236.2
A
SECTION A-A
A
3.405
86.5
2.875
73.0
0.156
4.0
R .06
1.5
9.219
234.2
2.000
50.8
10.125
257.2
SECTION A-A
.040 × 45°
1.0 × 45°
2.875
73.0
ø 0.266
ø 6.8
A
A
A
A
A
A
Figure 8-1 – Seal Bearing and Installation Tools
22 Operator’s Manual 2020 0217 ENG
9
ASSEMBLY DRAWING AND PARTS LIST
ASSEMBLY DRAWING
30
See Rotor Shaft
Seal Detail
(Item 12) Below
12 29 14
37
38
39 5
6
27
1
17
33
25
10
2
8
31
26
24
23
9
7
32 13 16 18 11
22
20
3
34
35
4
28
21
19
ROTOR SHAFT SEAL DETAIL (ITEM 12)
STANDARD
PISTON/SLINGER SEAL
ASSEMBLY
OPTIONAL
PISTON/LIP SEAL
ASSEMBLY (-LS)
15
23 Operator’s Manual 2020 0217 ENG
9
Assembly Drawing and Parts List
PARTS LIST
20
21
22
23
24
25
14
16
17
18
19
8
9
10
11
5
6
3
4
7
ITEM
NO.
1
2
12
12
13
26
PART DESCRIPTION STD LS*
Drive Rotor
Driven Rotor
Housing
End Plate
Extension Cover
Drive End Cover
Gear End Cover
Timing Gear Assembly
2
2
1
2
1
1
1
1
1
1
Set
2 Bearings
Bearing
Bearing Shield
Piston/Slinger Seal
Assembly
Piston/Lip Seal
Assembly
Oil Slinger Drive
Assembly
Oil Slinger Driven
Assembly
Gasket
Drive Shaft Seal
O-ring Cover
Shur-Melt™ Plug
(LH Thread)
Blank Plug
(LH Thread)
Oil Sight Glass
Pipe Plug
Gear Key
Rotor Shaft Washer
Socket Head Cap
Screw
Socket Head Cap
Screw
4
–
1
1
2
1
2
2
2
4
12
2
3
3
16
1
2
1
2
1
1
1
1
Set
2
2
2
1
2
1
1
–
4
1
2
16
2
4
12
2
3
3
ITEM
NO.
PART DESCRIPTION
27
28
29
30
31
32
Socket Head Cap
Screw
Socket Head Cap
Screw
Lock Washer
Dowel Pin
Bearing Shims
Drive End Spacer
39**
Socket Head Cap
Screw
391** Lock Washer
40**
42
43**
44**
Pipe Plug (or Breathers on LS model)
Shoulder Screw
Lock Washer
Hex Nut
STD
16
16
32
8
8
2
16
32
2
2
2
2
LS*
16
16
16
32
2
2
2
2
32
8
8
2
* LS represents parts and quantities required for the LS (lip seal) version
** Not shown on drawing
24 Operator’s Manual 2020 0217 ENG
BLOWER INSTALLATION COMPONENTS
These components are recommended for installation and sold separately.
9
Assembly Drawing and Parts List
DESCRIPTION
Basic Mounting Kit, Driver Side
Basic Mounting Kit, Passenger Side
Port Gasket
Blower Port Lock Washer
Blower Mounting Bolt
Blower Mounting Lock Washer
Blower Port Bolt
QTY
4
2
1
2
2
2
2
Operator’s Manual 2020 0217 ENG 25
WARRANTY – TRUCK BLOWERS
Subject to the terms and conditions hereinafter set forth and set forth in General Terms of Sale, Tuthill Vacuum & Blower
Systems (the Seller) warrants products and parts of its manufacture, when shipped, and its work (including installation and startup) when performed, will be of good quality and will be free from defects in material and workmanship. This warranty applies only to Seller’s equipment, under use and service in accordance with Seller’s written instructions, recommendations and ratings for installation, operating, maintenance and service of products, for a period as stated in the table below. Because of varying conditions of installation and operation, all guarantees of performance are subject to plus or minus 5% variation.
(Non-standard materials are subject to a plus or minus 10% variation)
PRODUCT
TYPE
WARRANTY DURATION
New 18 months from date of shipment, or 12 months after initial startup date, whichever occurs first
Remanufactured 12 months from date of shipment, or 12 months after initial startup date, whichever occurs first
Repair 12 months from date of shipment, or remaining warranty period, whichever is greater
THIS WARRANTY EXTENDS ONLY TO BUYER AND/OR ORIGINAL END USER, AND IN NO EVENT SHALL THE SELLER
BE LIABLE FOR PROPERTY DAMAGE SUSTAINED BY A PERSON DESIGNATED BY THE LAW OF ANY JURISDICTION
AS A THIRD PARTY BENEFICIARY OF THIS WARRANTY OR ANY OTHER WARRANTY HELD TO SURVIVE SELLER’S
DISCLAIMER.
All accessories furnished by Seller but manufactured by others bear only that manufacturer’s standard warranty.
All claims for defective products, parts, or work under this warranty must be made in writing immediately upon discovery and, in any event within one (1) year from date of shipment of the applicable item and all claims for defective work must be made in writing immediately upon discovery and in any event within one (1) year from date of completion thereof by Seller. Unless done with prior written consent of Seller, any repairs, alterations or disassembly of Seller’s equipment shall void warranty.
Installation and transportation costs are not included and defective items must be held for Seller’s inspection and returned to
Seller’s Ex-works point upon request.
THERE ARE NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY WHICH EXTEND BEYOND THE DESCRIPTION
ON THE FACE HEREOF, INCLUDING WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS OF PURPOSE.
After Buyer’s submission of a claim as provided above and its approval, Seller shall at its option either repair or replace its product, part, or work at the original Ex-works point of shipment, or refund an equitable portion of the purchase price.
The products and parts sold hereunder are not warranted for operation with erosive or corrosive material or those which may lead to build up of material within the product supplied, nor those which are incompatible with the materials of construction.
The Buyer shall have no claim whatsoever and no product or part shall be deemed to be defective by reason of failure to resist erosive or corrosive action nor for problems resulting from build-up of material within the unit nor for problems due to incompatibility with the materials of construction.
Any improper use, operation beyond capacity, substitution of parts not approved by Seller, or any alteration or repair by others in such manner as in Seller’s judgment affects the product materially and adversely shall void this warranty.
No employee or representative of Seller other than an Officer of the Company is authorized to change this warranty in any way or grant any other warranty. Any such change by an Officer of the Company must be in writing.
The foregoing is Seller’s only obligation and Buyer’s only remedy for breach of warranty, and except for gross negligence, willful misconduct and remedies permitted under the General Terms of Sale in the sections on CONTRACT PERFORMANCE,
INSPECTION AND ACCEPTANCE and the PATENTS Clause hereof, the foregoing is BUYER’S ONLY REMEDY
HEREUNDER BY WAY OF BREACH OF CONTRACT, TORT OR OTHERWISE, WITHOUT REGARD TO WHETHER ANY
DEFECT WAS DISCOVERED OR LATENT AT THE TIME OF DELIVERY OF THE PRODUCT OR WORK. In no event shall
Buyer be entitled to incidental or consequential damages. Any action for breach of this agreement must commence within one (1) year after the cause of action has occurred.
January 2005
OPERATING DATA FORM / PRODUCT REGISTRATION
It is to the user’s advantage to have the requested data filled in below and available in the event a problem should develop in the blower or the system. This information is also helpful when ordering spare parts.
Length Model No.
Serial No.
Start-up Date
Pump RPM
Pump Sheave
Diameter
Motor Sheave
Diameter
Motor RPM
NOTES:
HP
V-Belt Size
Type of Lubrication
Operating Vacuum
Any Other Special Accessories Supplied or in Use:
IMPORTANT
All blowers manufactured by Tuthill Vacuum & Blower Systems are date-coded at time of shipment. In order to assure you of the full benefits of the product warranty, please complete, tear out and return the product registration card, or register online at tuthillvacuumblower.com
.
For Service & Repair, Technical
Support, or Product Sales contact:
Tuthill Vacuum & Blower Systems
4840 West Kearney Street
Spring
fi
eld, Missouri USA 65803-8702
O 417.865.8715 800.825.6937
F 417.865.2950
tuthillvacuumblower.com
REGISTERED
VACUUM & BLOWER SYSTEMS
TUTHILL CORPORATION
IN
TE
RN
ATIO
NAL QUALITY
ST
AN
D
AR
D
Manual 2020 0217 ENG
Copyright © 2017 Tuthill Vacuum & Blower Systems
All rights reserved. Product information and speci fi cations subject to change.
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