Toro Backhoe, Dingo Compact Utility Loader User manual

Toro Backhoe, Dingo Compact Utility Loader User manual
Form No. 3350-453
Backhoe
for Dingo Compact Utility Loaders
Model No. 23160—220000001 & Up
Operator’s Manual
Original Instructions (EN/GB)
Write the product model and serial numbers in the space
below:
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety and Instruction Decals . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stability Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loose Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Dingo 200/300 Series Backhoe Kit .
Installing the Dingo TX Backhoe Kit . . . . . . . . . .
Greasing the Backhoe . . . . . . . . . . . . . . . . . . . . . .
Installing a Bucket . . . . . . . . . . . . . . . . . . . . . . . . .
Adjusting the Seat . . . . . . . . . . . . . . . . . . . . . . . . .
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation Checklist . . . . . . . . . . . . . . . . . . . . . . . .
Backhoe Overview . . . . . . . . . . . . . . . . . . . . . . . . .
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting the Backhoe to the Traction Unit . . . .
Operating the Backhoe . . . . . . . . . . . . . . . . . . . . . .
Securing the Backhoe for Transport . . . . . . . . . . .
Disconnecting the Backhoe from the Traction Unit
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Interval Chart . . . . . . . . . . . . . . . . . . . . . .
Greasing and Lubrication . . . . . . . . . . . . . . . . . . . .
Changing the Bucket Orientation . . . . . . . . . . . . . .
Adjusting the Boom Speed . . . . . . . . . . . . . . . . . . .
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Model No.
Serial No.
This manual identifies potential hazards and has special
safety messages that help you and others avoid personal
injury and even death. Danger, Warning, and Caution are
signal words used to identify the level of hazard. However,
regardless of the hazard, be extremely careful.
Danger signals an extreme hazard that will cause serious
injury or death if you do not follow the recommended
precautions.
Warning signals a hazard that may cause serious injury or
death if you do not follow the recommended precautions.
Caution signals a hazard that may cause minor or moderate
injury if you do not follow the recommended precautions.
This manual uses two other words to highlight information.
Important calls attention to special mechanical
information and Note: emphasizes general information
worthy of special attention.
Safety
Improper use or maintenance by the operator or owner
can result in injury. To reduce the potential for injury,
comply with the safety instructions in the traction unit
operator’s manual and always pay attention to the
symbol, which means CAUTION,
safety alert
WARNING, or DANGER—“personal safety
instruction.” Failure to comply with the instruction may
result in personal injury or death.
Introduction
Read this manual carefully to learn how to operate and
maintain your product properly. The information in this
manual can help you and others avoid injury and product
damage. Although Toro designs and produces safe
products, you are responsible for operating the product
properly and safely.
Danger
There may be buried power, gas, and/or telephone
lines in the work area. Electric shock, death, or
explosion may occur.
You may contact Toro directly at www.Toro.com for
product and accessory information, help finding a dealer, or
to register your product.
Have the property or work area marked for buried
lines and do not dig in marked areas.
Whenever you need service, genuine Toro parts, or
additional information, contact an Authorized Service
Dealer or Toro Customer Service and have the model and
serial numbers of your product ready. You will find the
model and serial number on a plate located on the product.
2003 by The Toro Company
8111 Lyndale Avenue South
Bloomington, MN 55420-1196
2
Contact us at www.Toro.com
All Rights Reserved
Printed in the USA
Danger
Caution
There may be overhead power lines in the work
area. Electric shock or death may occur if a power
line is touched by the backhoe.
The tires of the traction unit can be slippery. If the
tires are used as a step to climb on to or off of the
backhoe, the operator could slip and fall, causing
injury.
Survey and mark the area where there are
overhead power lines, and dig with caution under
power lines, to ensure that you do not touch them
with the backhoe.
Use the step provided when climbing on to or off of
the backhoe and not the traction unit tires.
Warning
When going up or down hill, the machine could
overturn if the heavy end is toward the downhill
side. Someone may be pinned or seriously injured
by the machine if it overturns.
Operate up and down slopes with the backhoe
uphill.
Safety and Instruction Decals
Safety decals and instructions are easily visible to the operator and are located near any area
of potential danger. Replace any decal that is damaged or lost.
100-4136
100-4134
1. Crushing hazard of hand and foot—keep hands and feet a safe
distance from a moving stabilizer.
1. Lock the boom before transporting the backhoe.
100-4135
1. Install and secure the side bars before operating the backhoe.
100-4137
1. Tipping hazard—do not move the traction unit while seated on
the backhoe.
3
100-4138
1. Lower the boom.
2. Rotate the boom left.
3. Rotate the boom right.
4. Raise the boom.
5. Lower the left stabilizer.
6. Lower the right stabilizer.
7. Raise the left stabilizer.
8. Raise the right stabilizer.
9. Raise the dipperstick.
10. Curl the bucket.
11. Dump the bucket.
12. Lower the dipperstick.
100-4138 (CE only)
1. Lower the boom.
2. Rotate the boom left.
3. Rotate the boom right.
4. Raise the boom.
5. Lower the left stabilizer.
6. Lower the right stabilizer.
7. Raise the left stabilizer.
8. Raise the right stabilizer.
9. Raise the dipperstick.
10. Curl the bucket.
11. Dump the bucket.
12. Lower the dipperstick.
100-7263
100-4132
1. Crushing hazard of hand—read the Operator’s Manual.
1. Crushing hazard, backhoe—keep bystanders a safe distance
from the backhoe.
4
100-4133
1. Warning—read the Operator’s Manual.
2. Explosion and electric shock hazards—do not dig in areas with buried gas or electrical lines, and do not operate under overhead electrical
lines.
3. Crushing hazard, backhoe—lock the boom before leaving the machine.
4. Tipping hazard—do not move the traction unit while seated on the backhoe, install the counter–weight, and lower the stabilizers.
Specifications
Note: Specifications and design are subject to change without notice.
Width
34.5 inches (87.6 cm)
Length
112.5 inches (286 cm)
Transport height
84 inches (213 cm)
Fully raised height
115 inches (292 cm)
Weight
710 lbs (322 Kg)
Digging depth (maximum)
79 inches (200.6 cm)
Bucket rotation
135 degrees
Swing arc
151 degrees
Stabilizer spread (working)
130 inches (330 cm)
Stability Ratings
Warning
To determine the degree of slope you can traverse with the
backhoe installed on a traction unit, find the stability rating
for the hill position you want to travel in the following
table, then find the degree of slope for the same rating and
hill position in the Stability Data section of the traction unit
operator’s manual.
Exceeding the maximum recommended slope can
cause the traction unit to tip, crushing you or
bystanders.
Do not drive the traction unit on a slope steeper
than the maximum recommended slope, as
determined in the following table and the traction
unit operator’s manual.
5
Orientation
Front Uphill
Rear Uphill
Side Uphill
Stability Rating
C
D
C
Important If your traction unit has a rear operator’s
platform, the counterweight must be used on the platform
while using the backhoe, or the traction unit will become
unstable.
Setup
Loose Parts
Note: Use the chart below to identify parts for assembly.
DESCRIPTION
Dingo 200/300 Series Backhoe Kit (sold
separately)
Dingo TX Backhoe Kit (sold separately)
Bucket, 9, 12, or 16 inch (23, 30, or 41 cm)
QTY.
USE
1
One kit required to connect the backhoe to your
traction unit
1
1
Install on the backhoe. Must be purchased
separately.
The backhoe mounts slightly differently to the Dingo 200/300 series traction unit than it does to the Dingo TX. If you will be
using the backhoe on a Dingo 200/300 series traction unit, install the Dingo 200/300 Series Backhoe Kit on your traction unit.
If you will be using the backhoe on a Dingo TX traction unit, install the Dingo TX Backhoe Kit on your traction unit. Use
the instructions provided in this section to install these kits.
Installing the Side Bar Brackets
Installing the Dingo 200/300
Series Backhoe Kit
1. Remove the traction unit manual holder and relocate it
under the control panel (models 22305 and 22305TE
only).
If you will be using the backhoe with a Dingo 200 or 300
series traction unit, install the side bar brackets and tilt
cylinder pin included in the Dingo 200/300 Series Backhoe
Kit.
2. Remove the battery from the traction unit. Refer to
your traction unit operator’s manual.
Note: If you have a Dingo 300 series, diesel traction unit,
you do not need to remove the battery; however, you do
need to remove the loader arm cylinder and exhaust cover
plate on the right side of the machine. To remove the
loader arm cylinder, you need to raise the loader arms and
6
install the cylinder lock on the left side before removing the
right cylinder. Replace the cylinder and plate when
finished installing the side bar bracket.
3
2
3. Examine your traction unit. If it has three mounting
holes pre-drilled in the frame, a few inches in front of
each lift cylinder (Fig. 1), skip to step 6.
1
4
1
m–4586
Figure 3
1. Side bar bracket
2. Back-plate
m–4560
3. Carriage bolt
4. Nut
Figure 1
7. Torque the nuts to 75 ft-lbs (102 N·m).
1. Holes
8. Repeat steps 3–7 for the other side of the traction unit.
4. Line up the side bar bracket as illustrated in Figure 2
and mark the centers of the three holes (you may need
to adjust the position of the bracket slightly so that the
bracket and back-plate do not interfere with weldments
on the traction unit).
9. Install the battery from the traction unit. Refer to your
traction unit operator’s manual.
Note: On some Dingo 200 series traction units, the bolt
heads will interfere with the battery case. If this happens,
elongate the holes in the frame for mounting the battery
clamp.
1
Changing the Tilt Cylinder Pin
1. Place a block in front of the mount plate so that it
cannot swing forward when you remove the tilt cylinder
pin.
3.5 in. (8.9 cm)
m–4560
Caution
3.2 in. (8.1 cm)
Figure 2
1. Side bar bracket
When you remove the tilt cylinder pin, the mount
plate may swing forward, crushing your feet or
hands, or those of bystanders.
5. Drill three, 9/16 in. (1.43 cm) diameter holes through
the side of the traction unit at the marked locations.
Block up the mount plate before removing the tilt
cylinder pin.
6. Secure the side bar bracket to the side of the traction
unit using the back-plate, three carriage bolts, and three
nuts (Fig. 3).
2. Remove the bolt securing the upper tilt cylinder pin
(Fig. 4).
3. Using a hammer and punch, remove the tilt cylinder
pin.
7
4. Install the new pin into position and secure it with the
bolt and nut removed previously, using the middle hole
on the pin (Fig. 6).
2
3
5. Grease the pin using the fitting on the tilt cylinder.
1
Note: Leave the new pin installed, even when the backhoe
is removed.
m–4562
Figure 4
1. Tilt cylinder
2. Tilt cylinder pin
2
3. Bolt
1
4. Apply a generous coating of grease to the new pin.
5. Install the new pin into position and secure it with a bolt
(Fig. 5).
3
Note: Leave the new pin installed, even when you remove
the backhoe.
4
1
5
m–4911
Figure 6
1. Tilt cylinder
2. Bolt
3. Nut
2
m–4976
Figure 5
1. New tilt cylinder pin
4. New tilt cylinder pin
5. Middle hole
2. Bolt
Greasing the Backhoe
Installing the Dingo TX
Backhoe Kit
Before using the backhoe for the first time, ensure that all
of the fittings are fully greased; refer to Greasing and
Lubrication, page 15.
If you will be using the backhoe with a Dingo 200 or 300
series traction unit, install the tilt cylinder pin included in
the Dingo TX Backhoe Kit.
Installing a Bucket
1. Block up the mount plate so that it cannot swing
forward.
The backhoe does not come with a bucket installed because
several sizes of buckets are available for you to choose
from. Install your bucket as follows:
Caution
1. Connect the backhoe onto the traction unit and raise the
dipperstick above the ground; for more information,
refer to Operation, page 9.
When you remove the tilt cylinder pin, the mount
plate may swing forward, crushing your feet or
hands, or those of bystanders.
2. Remove the bolts and nuts securing each of the two
bucket pins to the dipperstick (Fig. 7).
Block up the mount plate before removing the tilt
cylinder pin.
3. Remove the pins.
4. Align the pin holes in the bucket with the mounting
holes in the dipperstick (Fig. 7).
2. Remove the bolt and nut securing the upper tilt cylinder
pin on the traction unit (Fig. 6).
5. Secure the bucket with the pins, bolts, and nuts removed
previously (Fig. 7).
3. Using a hammer and punch, remove the tilt cylinder
pin.
8
1
Operation
4
4
Note: Always use the traction unit to lift and move the
attachment.
2
Operation Checklist
3
To ensure safe, effective use of the backhoe, complete the
following activities before, during, and after operating the
backhoe:
m–4589
Figure 7
1. Dipperstick
2. Bucket pin
3. Bolt
4. Nut
Note: For detailed descriptions of these procedures, refer to
Installing the Backhoe on the Traction Unit (page 10) and
Operating the Backhoe (page 11).
Before Operation:
Adjusting the Seat
• Locate and mark underground utilities.
• Install the counterweight on the traction unit.
Caution
• Install the links between the backhoe and the tilt
cylinder pin on the traction unit.
The seat mounting bracket has several pinch
points. You could pinch and/or cut your fingers
when adjusting the seat.
• Install the side bars between the backhoe and the
traction unit frame (Dingo 200/300 series traction units
only).
Take care to keep your fingers away from the seat
mounting bracket when moving the seat up and
down and when lowering the seat into position.
• Install the hydraulics lever clamp over the traction unit
controls.
1. Stop the engine.
• Lower the stabilizer arms before digging.
2. Tilt the seat forward.
During Operation:
3. Loosen the knobs on the bottom of the seat (Fig. 8) and
slide the seat forward or back as needed.
Only operate the backhoe from the backhoe seat.
Only move the traction unit from the traction unit
operator’s position and not from the seat of the backhoe.
4. To adjust the seat height, remove the hairpin cotter and
pin from the seat stand (Fig. 8) and raise or lower the
seat as required.
After Operation:
Install the pins securing the boom from moving up and
down and side to side (Figs. 17 and 18) before leaving the
backhoe unattended, transporting it, or disconnecting it
from the traction unit.
2
1
3
m–4547
Figure 8
1. Seat
2. Knobs
3. Pin and hairpin cotter
5. When you have the proper height, install the pin and
hairpin cotter to secure the seat.
9
Backhoe Overview
Boom Control Lever
Figure 9 illustrates the backhoe. Familiarize yourself with
all of the components listed in Figure 9.
Move the boom control lever forward to lower the boom
and rearward to raise the boom. Move the boom control
lever to the right to swing the boom to the right and move it
left to swing the boom to the left.
2
3
You can also move the boom control lever into an
intermediate position (i.e., forward and left, forward and
right, rearward and left, or rearward and right) to swing the
boom at the same time as you raise or lower it.
4
1
Dipperstick/Bucket Control Lever
7
Move the dipperstick/bucket control lever forward to
extend the dipperstick and rearward to retract the
dipperstick. Move the dipperstick/bucket control lever to
the right to dump the bucket and move it left to load the
bucket.
5
6
m–4587
You can also move the dipperstick/bucket control lever into
an intermediate position (i.e., forward and left, forward and
right, rearward and left, or rearward and right) to extend or
retract the dipperstick at the same time as you load or dump
the bucket.
Figure 9
1.
2.
3.
4.
Seat
Controls
Boom
Dipperstick
5. Bucket
6. Stabilizer
7. Speed adjustment valve
Connecting the Backhoe to the
Traction Unit
Controls
Important Before connecting any attachments to the
traction unit, ensure that the mount plates are free of any
dirt or debris and that the pins rotate freely.
Familiarize yourself with all of the controls listed in Figure
10 before you operate the backhoe.
2
1
1. Start the engine.
3
2. Attach the backhoe to the traction unit mount plate as
described in the traction unit Operator’s Manual.
3. Tilt the backhoe part of the way back.
4. Stop the engine.
m–4546
5. Attach the hydraulic hoses to the traction unit as
described in the traction unit Operator’s Manual.
Figure 10
1. Stabilizer control levers
2. Boom control lever
3. Dipperstick/bucket control
lever
6. Start the engine.
7. Tilt the backhoe all the way back.
Note: On CE units the control for raising and lowering the
dipperstick and raising and lowering the boom are reversed
(i.e., the boom control is on the right and the dipperstick
control is on the left). The swing and bucket controls do
not change.
Caution
Tilting the backhoe can pinch or crush your hands.
Keep away from the moving backhoe when tilting.
Stabilizer Control Levers
8. Slide the two links on each end of the tilt cylinder pin
and the backhoe link pin and secure them with two
lynch pins (Fig. 11 for Dingo 200/300 Series traction
unit or Fig. 12 for Dingo TX traction unit).
Move the stabilizer control levers forward to lower the
stabilizers and rearward to raise the stabilizers.
10
Note: You may need to move the attachment tilt lever to
line up the holes in the links with the pins.
2
4
4
4
1
2
3
1
3
m–4561
m–4130
Figure 13
Figure 11
1. Tilt cylinder pin
2. Backhoe link pin
1. Side bar
2. Pin
3. Link
4. Lynch pin
3. Hairpin cotter
4. Jam nut
Operating the Backhoe
Preparing the Backhoe
1. Drive to the work location.
2
1
2. If you are using the backhoe with a Dingo 200/300
series traction unit, install the auxiliary hydraulics
clamp as follows:
A. Pull the auxiliary hydraulics lever to the operator
grip and install the hydraulics lever clamp by
pushing it over the hand grip and sliding it right so
that the pin through the clamp slides under the right
hand grip (Fig. 14).
3
4
4
B. If your traction unit has a parking brake, engage it.
m–4914
1
Figure 12
1. Tilt cylinder pin
2. Backhoe link pin
2
3. Link
4. Lynch pin
3
9. If you are installing the backhoe on a Dingo 200/300
series traction unit, install the side bars on each side as
illustrated in Figure 13. The decal on each side bar
must be visible when installed.
m–4641
Important If the bars do not fit snuggly, remove them,
loosen the jam nut, and thread the compound side bar
together or apart as needed to ensure that they fit as tight as
possible (Fig. 13). Tighten the jam nut when finished.
Figure 14
1. Hydraulics lever clamp
2. Pin
Note: If you have a Dingo 300 series, diesel traction unit,
you may need to loosen the hood and slide it up in the
mounting slots to ensure that the hood does not interfere
with the side bars.
3. Auxiliary hydraulics lever
3. If you are using the backhoe with a Dingo TX traction
unit, install the auxiliary hydraulics clamp as follows:
A. Set the throttle 2/3 of the way to the rabbit position
on the traction unit.
11
Note: One pin prevents the boom from swinging side to
side (Fig. 17) and the other prevents the boom from moving
up and down (Fig. 18).
B. Pull the lever and clamp down to the reference bar
so that the clamp routes behind the loader
arm/attachment tilt lever.
1
1
2
2
m–4548
Figure 17
1. Pin
m–4912
2. Lynch pin
Figure 15
1. Hydraulics lever clamp
2. Auxiliary hydraulics lever
C. Set the parking brake and release the clamp so that it
catches under the brake lever (Fig. 16).
2
1
m–4550
Figure 18
1. Pin
2. Lynch pin
1
m–4913
Figure 16
1. Hydraulics lever clamp
2. Pin
2m–4549
3. Auxiliary hydraulics lever
Figure 19
1. Pin
4. Push the stabilizer control levers forward to lower both
stabilizers until they touch the ground and the front
wheels of the traction unit come off of the ground
slightly.
2. Lynch pin
Digging a Hole
Using a backhoe with precision and proficiency takes time
and practice. In general, you dig a hole by extending the
dipperstick and bucket, lowering them into the ground, and
then pullback on the dipperstick while raising the boom and
curling the bucket rearward (Fig. 20).
5. Remove the two pins locking the boom in place (Figs.
17 and 18) and place them in the storage positions (Fig.
19).
12
A
Warning
If you dig too close to the backhoe, the backhoe
could fall into the hole, tipping on top of you
causing severe injury.
Ensure that you do not dig within three feet of the
backhoe or stabilizers.
• Do not take large bites of soil. Instead, sweep the
bucket through the soil using the swinging motion of
the dipperstick a few inches deep at a time.
B
• If the bucket catches in the soil, uncurl the bucket, raise
the boom slightly, and continue digging.
C
• If your traction unit has a speed selector, set it to the
fast position (rabbit) while you are learning how to
operate the backhoe (this will slow the backhoe down).
Set it to the slow position (turtle) once you feel you
have mastered the use of the backhoe.
• If your traction unit has a flow divider, set it to the 11
o’clock position.
m–4554/4555/4556
Figure 20
Securing the Backhoe for
Transport
To empty the bucket you swing it to the left or right and
extend the dipperstick and uncurl bucket, dumping the load
(Fig. 21).
A
B
Warning
m–4557/4558
If you do not secure the boom, it could swing or
lower during transport or when disconnecting the
backhoe from the traction unit. The traction unit
could become unstable causing loss of control and
you or bystanders could be injured. If the boom
swings when disconnecting, it could crush or
amputate fingers or hands as you disconnect the
attachment locking pins.
Figure 21
Always secure the boom before transport and
before disconnecting the backhoe from the traction
unit.
The distance you extend the dipperstick and bucket and the
size of bite you take will vary greatly with the soil type,
moisture content of the soil, and obstructions in the soil,
such as tree roots and rocks.
1. Fully raise the boom, retract the dipperstick, and curl
the bucket rearward (Fig. 22). Ensure that you center
the boom locking pin holes as much as possible.
Spend some time practicing with the backhoe to get the feel
for how it operates and how to best use it in the conditions
in which you work. Please read and use the following tips
when operating the backhoe:
• Do not dig too close to the backhoe body or stabilizers.
The backhoe could undercut the stabilizers or traction
unit causing the machine to fall into the hole.
13
m–4587
2
Figure 22
1
3
m–4644
Figure 25
2. Pull the stabilizer levers rearward until the stabilizers
are fully raised.
1. Pin
2. Clamp
3. Secure the boom using the two pins removed prior to
operation (Figs. 23 and 24).
3. Hole in seat support
7. Slowly transport the backhoe as needed.
1
Disconnecting the Backhoe
from the Traction Unit
1. Secure the backhoe in the transport position (refer to
Securing for Transport, page 13), move the backhoe to a
level storage area, and stop the engine.
2
m–4548
Figure 23
1. Pin
Warning
2. Lynch pin
If you do not secure the boom, it could swing or
lower during transport or when disconnecting the
backhoe from the traction unit. The traction unit
could become unstable causing loss of control and
you or bystanders could be injured. If the boom
swings when disconnecting, it could crush or
amputate fingers or hands as you disconnect the
attachment locking pins.
2
1
m–4550
Always secure the boom before transport and
before disconnecting the backhoe from the traction
unit.
Figure 24
1. Pin
2. Lynch pin
2. If you are removing the backhoe from a Dingo 200/300
Series traction unit, remove the side bars as follows:
4. Stop the engine and remove the key.
5. Remove the hydraulics lever clamp (Fig. 14 or 15).
A. Remove the hairpin cotters and pins securing the
side bars and remove the side bars (Fig. 13).
6. Secure the clamp under the backhoe seat by inserting
the end of the pin in the clamp into the hole in the seat
support (Fig. 25 for Dingo 200/300 series traction units.
The Dingo TX has a shorter pin through its clamp).
B. Pin the side bars in the storage positions as
illustrated in Figure 26.
14
13. Tilt the mount plate forward and back the traction unit
away from the backhoe.
Maintenance
Caution
m–4590
If you leave the key in the ignition switch, someone
could start the engine. Accidental starting of the
engine could seriously injure you or other
bystanders.
Figure 26
3. Start the engine.
Remove the key from the ignition switch before
you do any maintenance.
4. Remove the lynch pins securing the links and remove
the links (Fig. 11 or 12).
Service Interval Chart
Note: You may need to adjust the tilt lever slightly to
loosen the links.
5. Secure the links and two lynch pins for storage on the
pins on the backhoe and the other two lynch pins on the
traction unit tilt cylinder pin.
Service Operation
6. Disengage the attachment lock pins by turning them to
the outside.
Chipped surfaces–paint
8
Storage
Hours Service
Grease fittings
7. Tilt the backhoe forward slowly until the storage
supports on the backhoe receiver plate and the bucket
contacts the ground.
X
X
X
Greasing and Lubrication
Service Interval/Specification
Warning
Grease all fittings every 8 operating hours (Fig. 27). Note
that in most cases the grease fittings are located in the
center of every pivot pin. Also, grease the fitting in the
swing cylinder pivot pin, located under the seat column,
under the backhoe (this location is not shown in Figure 27).
If you remove the backhoe from the traction unit
without a bucket installed on the dipperstick, the
backhoe will be unstable. The backhoe could tip
over injuring you or other bystanders.
Grease all fittings immediately after every washing.
Do not remove the backhoe from the traction unit
without first installing a bucket onto the backhoe.
Grease Type: General-purpose grease
8. Stop the engine.
How to Grease
9. Move the auxiliary hydraulic lever forward, backward,
and back to the neutral position to relieve hydraulic
pressure at the hydraulic couplers.
1. Stop the engine and remove the key.
2. Clean the grease fittings with a rag.
10. Slide the collar back on hydraulic couplers and
disconnect them.
3. Connect a grease gun to each fitting.
4. Pump grease into the fittings until grease begins to ooze
out of the bearings.
11. Install protective covers onto the hydraulic couplers on
the traction unit.
5. Wipe up any excess grease.
12. Start the engine.
15
m–4589
1
4
4
5
2
3
Figure 28
1. Dipperstick
2. Upper bucket pin
3. Bolt
4. Nut
5. Second set of holes
m–4587
Adjusting the Boom Speed
You can adjust the speed that the boom moves by changing
the setting of three speed adjustment valves. The valve that
controls the up and down movement is located on top of the
boom (Fig. 9).
3
m–4552
1
Figure 27
4
Changing the Bucket
Orientation
5
2
m–4551
You can change the angle that the bucket is mounted on the
dipperstick to a position that allows you to dig more
vertically. This will allow you to dig very close to a
foundation, or dig a square sided hole. To change the
orientation, complete the following procedure:
Figure 29
1. Speed adjustment valve
2. Knob
3. Set screw
1. Remove the bolts and nuts securing the upper bucket
pin (Fig. 28).
4. Slow
5. Fast
The two valves that control the left and right swing of the
boom are located inside of the controls access panel
(Fig. 30). To access these valves, remove six locknuts and
the panel. Adjust both valves equally. Replace the access
panel when finished.
2. Remove the pin.
3. Swing the bucket up, aligning the second set of holes
with the mounting holes on the dipperstick (Fig. 28).
4. Secure the bucket with the pin, bolt, and nut removed
previously.
16
2. To increase the speed of the boom, turn the knob
counter-clockwise.
1
3. To decrease the speed of the boom, turn the knob
clockwise.
4. Tighten the set screw.
Storage
1. Before long term storage wash the attachment with mild
detergent and water to remove dirt and grime.
m–4587
Figure 30
2. Apply grease to all grease fittings.
1. Controls access panel
3. Check and tighten all bolts, nuts, and screws. Repair or
replace any part that are damaged or worn.
To adjust the valves, complete the following procedure and
refer to Figure 29.
4. Paint all scratched or bare metal surfaces. Paint is
available from your Authorized Service Dealer.
1. Loosen the set screw located on the side of the knob on
the valve.
5. Store the attachment in a clean, dry garage or storage
area. Cover it to protect it and keep it clean.
Troubleshooting
PROBLEM
Backhoe does not operate
POSSIBLE CAUSES
CORRECTIVE ACTION
1. Hydraulic coupler not
completely connected
1. Check and tighten all couplers.
2. Auxiliary hydraulics valve on
the traction unit is not fully
engaged.
2. Engage the valve.
3. Transport pins were not
removed.
3. Remove the pins.
4. Hydraulic fluid level is low.
4. Fill the traction unit hydraulic
tank.
5. Damaged hydraulic coupler
5. Check couplers and replace
any that are defective.
6. Obstructed hydraulic hose
6. Find and remove the
obstruction.
7. Pinched hydraulic hose
7. Replace the hose.
8. Auxiliary hydraulic valve on the
traction unit is not opening.
8. Repair the valve.
9. Hydraulic coupler not
completely connected
9. Check and tighten all couplers.
10.Bent piston rod
10.Contact your Authorized Toro
Dealer.
17
PROBLEM
Backhoe is operating slowly
POSSIBLE CAUSES
CORRECTIVE ACTION
1. Hydraulic oil is cold.
1. Allow the engine to warm the
oil before operating.
2. Engine speed is too slow.
2. Increase the throttle speed of
the traction unit.
3. Speed adjustment valve is set
too slow.
3. Adjust the speed adjustment
valve to obtain the desired
speed.
4. Pinched hydraulic hose
4. Replace the hose.
5. Speed adjustment valve is
leaking oil.
5. Contact your Authorized Toro
Dealer.
6. Damaged cylinder
6. Contact your Authorized Toro
Dealer.
7. Damaged hydraulic pump
7. Contact your Authorized Toro
Dealer.
1. Damaged hydraulic hose
1. Replace the hose.
2. Damaged cylinder
2. Contact your Authorized Toro
Dealer.
3. Damaged control valve
3. Contact your Authorized Toro
Dealer.
1. Damaged hydraulic hose
1. Replace the hose.
2. Damaged hydraulic system
2. Contact your Authorized Toro
Dealer.
Swing cylinder malfunctioning
1. Damaged cylinders, swing
restrictors, or cross-over relief
valve
1. Contact your Authorized Toro
Dealer.
Control valve sticking
g or working
g
h d
hard
1. Dirty hydraulic oil
1. Change the hydraulic oil.
2. Damaged or dirty valve
2. Contact your Authorized Toro
Dealer.
3. Damaged cylinder
3. Contact your Authorized Toro
Dealer.
1. Hydraulic fluid level is low.
1. Fill the traction unit hydraulic
tank.
2. Air in the hydraulic system
2. Extend the cylinders as far as
possible and hold them in an
extended position for several
seconds.
3. Hydraulic oil is cold.
3. Allow the engine to warm the
oil before operating.
4. Pinched hydraulic hose
4. Replace the hose.
Backhoe fails to hold up a load ((all
l d will
loads
ill normally
ll settle
ttl down
d
over a long period of time)
Hydraulic
y
oil leakage
g
Backhoe operation is spongy or
jjerky
y
18
19
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