85
Skid Steer Loader
PUBLICATION NO. 47994
December, 2001
Owner’s
and
Operator’s
Manual
THOMAS EQUIPMENT LIABILITY WARRANTY
THIS WARRANTY IS THE ONLY OBLIGATION OF THOMAS OR A THOMAS
DEALER TO THE PURCHASER OR ANYONE ELSE CONCERNING A
PRODUCT, ITS SERVICE, ITS USE OR PERFORMANCE OR ITS LOSS OF USE
OR FAILURE TO PERFORM. NEITHER THOMAS NOR A THOMAS DEALER
HAVE MADE AND NEITHER WILL MAKE ANY OTHER EXPRESSED OR
IMPLIED REPRESENTATION, WARRANTY OR AGREEMENT CONCERNING
A PRODUCT. NEITHER THOMAS NOR A THOMAS DEALER HAVE MADE
OR WILL MAKE ANY REPRESENTATION, WARRANTY OR AGREEMENT
CONCERNING A PRODUCTS MERCHANABILITY OR OTHER QUALITY, ITS
SUITABILITY FOR PURCHASER’S PURPOSE (EVEN IF A PURCHASER HAS
INFORMED THOMAS OR A THOMAS DEALER OF THAT PURPOSE), ITS
DURABILITY, PERFORMANCE OR OTHER CONDITION.
EVEN IF THOMAS OR A THOMAS DEALER WAS ADVISE OF THE
POSSIBILTY OF SUCH LOSS, NEITHER THOMAS NOR A THOMAS DEALER
WILL BE LIABLE TO PURCHASER OR ANYONE ELSE FOR ANY INDIRECT,
INCIDENTAL CONSEQUENTIAL, PUNITIVE, ECONOMIC, COMMERCIAL,
OR SPECIAL LOSS WHICH IS IN ANY WAY ASSOCIATED WITH A PRODUCT.
THIS INCLUDES ANY LOSS OF USE OR NON-PERFORMANCE OF A
PRODUCT, ANY REPLACEMENT RENTAL OR ACQUISITION COST, ANY
LOSS OF REVENUE OR PROFITS, ANY FAILURE TO REALIZE EXPECTED
SAVINGS, ANY INTEREST COSTS, ANY IMPAIRMENT OF OTHER GOODS,
ANY INCONVENIENCE OR ANY LIABILITY OF PURCHASER TO ANY OTHER
PERSON.
PURCHASER MAY NOT ATTEMPT TO ENLARGE ITS RIGHTS UNDER
THE WARRANTY BY MAKING A CLAIM FOR INDEMNITY, FOR BRACH OF
CONTRACT, FOR BREACH OF COLLATERAL WARRANTY, FOR A TORT
(INCLUDING NEGLIGENCE, MISREPRESENTATION OR STRICT LIABILITY)
OR BY CLAIMING ANY OTHER CAUSE OF ACTION.
THE WARRANTY IS A CONDITION OF SALE OF THE PRODUCT TO
PURCHASER AND WILL THEREFORE APPLY EVEN IF PURCHASER
ALLEGES THAT THERE IS A TOTAL FAILURE OF THE PRODUCT.
N.B.Read and practice your Thomas S/S Loader operating and servicing
instructions. Failure to do this may void your warranty.
PUBLICATION NO. 47994 December 2001
MAIN INDEX
1. SAFETY PRECAUTIONS
2. CONTROLS
2. 1 Instrument Panel
2. 2 Seat and Seat Belt
2. 3 Seat Bar
2. 4 Parking Brake
2. 5 Throttle Controls
2. 6 Steering Controls
2. 7 Hand Controls
2. 8 Electrical Auxiliary Control
2. 9 Foot Pedals
2. 10 Quick - Tach
2. 11 Boom Support
2. 12 Electrical Panel
3. OPERATION
3. 1 Starting Instructions
3. 2 Operating Procedure
3. 3 Filling From a Pile
3. 4 Digging with a Bucket
3. 5 Leveling and Backfilling
3. 6 Auxiliary Hydraulics
3. 7 Lifting
3. 8 Towing
3. 9 Securing
3. 10 Battery Maintenance and Boosting
3. 11 Lowering Lift Arms
4. MAINTENANCE
4. 1 Preventive Maintenance Service Schedule
4. 2 Service Access
4. 3 Daily Service Checks
4. 4 50 Hour Service Check
4. 5 Final Drive Maintenance
4. 6 Hydraulic / Hydrostatic System Maintenance
4. 7 Engine Maintenance
4. 8 Air Cleaner Maintenance
4. 9 Electrical System
4. 10 Tire Maintenance
4. 11 Trouble Shooting
4. 12 Hydraulic / Hydrostatic Circuit
4. 13 Special Tools
5. SPECIFICATIONS
5. 1 Loader Specifications
5. 2 Torque Specifications
5. 3 Sound Power Level
5. 4 Decals
6. ATTACHMENTS AND BUCKETS
6. 1 Thomas Approved Buckets
6. 2 Thomas Approved Forks and Grapples
6. 3 Thomas Approved Attachments
1
FOREWORD
This book has been written to give the Owner / Operator necessary operating
servicing and preventative maintenance instructions on the loader.
Read this manual completely and know the loader before operating or servicing it.
Do not do any service procedures that are not in the Operator’s manual.
Only service personnel that have had training in the service of this loader can do these
service procedures.
Reference Information
Write the correct information for your loaders in the spaces below. Always use these
numbers when referring to your loader.
Model No.
Serial No.
Dealer Name
Address
Phone
Throughout this manual the terms DANGER, WARNING and CAUTION are used to
indicate the degree of hazard in terms of personal safety. These words will be used in
conjunction with the Safety - Alert symbol, a triangle with an exclamation mark.
Throughout this manual, the term IMPORTANT is used
* To indicate that instructions are necessary before operating or servicing the
loader.
* To show important procedures which must be followed to prevent damage to
the loader or attachment.
This warning indicates an
DANGER
WARNING
CAUTION
2
immediate hazard which
WILL result in severe
personal injury or death.
This warning indicates
hazards or unsafe
practices which COULD
result in severe personal
injury or death.
This warning indicates
hazards or unsafe
practices which COULD
result in minor personal
injury or product or
property damage.
IMPORTANT
IMPORTANT
Instructions are necessary
before operating or
servicing this machine.
Read the operators
manual and service decals
on the loader. Follow
warnings and instructions
in this manual when
making repairs,
adjustments or servicing.
Check for correct
operation after
adjustments and repairs.
This notice shows
important procedures
which must be followed
to prevent damage to the
loader or attachment.
1 SAFETY PRECAUTIONS
The following precautions are suggested to help prevent accidents.
A careful operator is the best operator. Most accidents can be avoided by observing certain precautions. Read and take the
following precautions before operating this loader to help prevent accidents. Equipment should be operated only by those
who are responsible and instructed to do so.
THE LOADER
1. Read this manual carefully before using the loader.
Working with unfamiliar equipment can lead to
accidents.
2. Do not allow anyone to ride on the loader with the
operator.
3. Make sure the seat bar is installed and functioning at all
times.
4. Never run the engine in a closed building without
adequate ventilation, as the exhaust fumes can cause
death.
5. Always fasten the seat belt around your waist before
starting the engine. Never fasten the seat belt behind
you.
6. Never attempt to start the engine while standing beside
the unit unless as specified in this manual or under
service procedures and backhoe operations. Start the
engine only while sitting in the operator’s seat with the
seat belt fastened around you. Always check to make
certain that the seat cushion is secured to the frame.
7. Keep the operator’s platform free of debris.
8. Never enter or leave the loader while the engine is
running. Always lower the lift arms down against the
frame, drop the attachment down to contact the ground,
set the parking brake and shut off the engine prior to
leaving the loader.
9. If the unit is equipped with a cab enclosure kit always
close the door prior to operating the loader lift arms.
10. Do not operate the loader unless all safety equipment,
shields, seat belt, seat bar, foot pedal and steering lever
locks, parking brake, operator guard, and boom support
are working properly, as well as all safety and
instruction decals are in place.
OPERATING THE LOADER
1. Always drive the loader at speeds compatible with
safety, especially when operating over rough ground,
crossing ditches or when turning.
2. Avoid jerky turns, starts, stops, or reverses.
3. Use care when operating on steep grades to maintain
proper stability.
4. Do not turn the loader while the lift arms are in the
raised position.
5. Be careful when driving through door openings or
under overhead objects. Always make sure there is
sufficient clearance for the operator’s guard.
6. When travelling on public roads, know the local rules
and regulations and make sure your loader is equipped
with the proper safety equipment.
7. Always be sure of water, gas, sewage and electrical
line locations before you start to dig.
8. Watch out for overhead and underground high-voltage
electrical lines when operating the loader.
9. Always park the loader on level ground where possible.
If the loader is to be parked on an incline, always lower
the attachment so that it contacts the ground, set the
parking brake and block the wheels.
10. Do not leave the loader when it is in motion.
11. Do not dismount from the loader and leave the loader
lift arms raised unless following specific service
procedures. Always lower the lift arms down against
the frame and drop the attachment down to contact the
ground.
12. Always be watchful of bystanders when operating the
loader.
13. Always carry the attachment low for maximum
stability and visibility.
14. Exercise extreme caution when operating the loader
with a raised, loaded attachment or fork.
15. Never attempt to lift loads in excess of loader capacity.
16. Check that the foot pedals are locked before getting out
of the operator’s seat.
MAINTENANCE
1. Stop the engine before performing any service on the
loader.
2. Never refuel the loader while smoking or with the
engine hot or running.
3. Replace all missing, illegible or damaged safety and
warning decals. (See Section 5. 4 for list).
4. Do not modify or alter, or permit anyone to modify or
alter this loader or any of its components or any loader
function.
5. Do not bypass the safety system. Consult your
Thomas
malfunctioning. Use booster cables only in
recommended manner. (See Section 3. 10).
6. Do not make mechanical adjustments while the loader
is in motion or when the engine is running. However, if
minor engine adjustments must be made, securely
block the loader with the wheels clear of the ground
and use extreme caution.
7. Do not attempt to repair or tighten hydraulic hoses
when the system is under pressure, when the engine is
running or when the lift arms are raised.
8. Do not get under the attachment or lift arms or reach
through the lift arms when they are raised.
9. Never attach the chains or ropes to the operator’s guard
for pulling purposes, as the loader can tip over.
10. Whenever servicing or replacing pins in cylinder ends,
buckets, etc., always use a brass drift and a hammer.
Failure to do so could result in injury from flying metal
fragments.
11. Cooling system operates under pressure which is
controlled by the radiator cap. It is dangerous to
remove the cap while system is hot. Always turn cap
slowly to the first stop and allow the pressure to escape
before removing the cap entirely.
Equipment Dealer if your safety controls are
3
1 SAFETY PRECAUTIONS
12. Keep the operator platform and foot pedal area free
from debris.
13. For lifting and towing instructions, refer to Sections
3. 7 and 3. 8 of this manual.
C360
Start Safely
WARNING: START THE ENGINE FROM THE
OPERATOR’S SEAT ONLY. NEVER ATTEMPT TO
START THE ENGINE BY SHORTING ACROSS
STARTER TERMINALS. Machine may move
uncontrollably and cause serious injury or death to
anyone in its path.
Know the exact starting procedure for your machine. See
the manufacturers manual for starting.
1. Sit in the operator’s seat and adjust the
seat so you can operate all the controls
properly.
2. Fasten the seat belt/operator restraint.
To avoid personal injury,
lower the boom arms, shut
off the engine, raise the seat
bar and cycle the hydraulics
to ensure they are locked.
WARNING
Then, unlatch the seat belt
and exit the loader. Do not
enter or exit with the engine
running unless as specified
in this manual or under
specific service and backhoe
operating procedures.
Do not raise the seat bar
engaging the park brake
IMPORTANT
WARNING
WARNING
IMPORTANT
Park Safely
Select level ground , whenever possible. If you must park
on a slope or incline, position the machine at right angles
to the slope, engage the parking brake, lower the bucket
and other attachments and block the wheels.
while the machine is in
motion. This can
potentially cause damage
to the braking system.
To prevent personal
injury do not start the
engine unless you are in
the seat with the seat belt
fastened around you.
To prevent personal
injury do not operate the
loader without lowering
the safety bar, fastening
the seat belt and keeping
feet on the control pedals
or cab floor.
This engine is equipped
with glow plugs. Do not
use ether or any high
energy fuels to assist
starting.
To prevent personal
injury always keep feet
WARNING
4
on the foot pedal or cab
floor while operating the
loader.
C-359
2 CONTROLS
2...CONTROLS
2. 1 Instrument Panel
2. 2 Seat and Seat Belt
2. 3 Seat Bar
2. 4 Parking Brake
2. 5 Throttle Controls
2. 6 Steering Controls
2. 7 Hand Controls
2. 8 Electric Auxiliary Control
2. 9 Foot Pedals
2. 10 Quick - Tach
2. 11 Boom Support
2. 12 Electrical Panel
5
2 CONTROLS
12
6
1
C3066
13 10
2 9
7
2. 1 INSTRUMENT PANEL
1. Engine Oil Pressure
If the light comes on during operation or fails to go out
after starting, shut off the engine immediately and
determine cause.
2. Engine Coolant Temperature
Light comes on when coolant is too hot.
3. Light Switch (Optional)
The light switch is an on-off toggle switch.
4. Hour Meter
4, 5
113
IMPORTANT
9. Alternator Light
The alternator light will come on if the alternator is not
producing sufficient current. Refer to the engine manual
for test procedures.
10. Seat Belt Light
Refer to Section 2. 2.
8
Fig. 2. 1
The diesel engine is
equipped with glow plugs.
Do not use ether or any
high energy fuels to assist
starting.
The hour meter records the number of engine operating
hours and has a total read out of 9999.9 hours.
5. Fuel Gauge
This gaugeindicates the quantity of fuel in the tank.
6. Hydraulic Oil Temperature Light
The hydraulic oil temperature light comes on when the
hydraulic oil becomes too hot.
7. Engine Pre-Heat Indicator (Diesel only)
The diesel engine is equipped with glow plugs to assist in
starting. The glow plug indicator light will turn red when
glow plugs are activated.
8. Ignition Switch
The ignition switch is a four position switch, off, pre-heat,
run and start. Turning the key counter clockwise will
engage the engine pre-heat. To engage the starter, turn the
key clockwise. When the key is released it will return to
run position.
11. Auxiliary Hydraulics Switch (Optional)
The panel mounted on/off switch will provide continuous
hydraulic flow of the auxiliary circuit.
To prevent personal
injury do not start the
WARNING
12. Park Brake Light
Park brake light is illuminated when the park brake is
engaged.
13. Auxiliary Hydraulic Light
Auxiliary hydraulic light is illuminated when the
auxiliary hydraulics are engaged.
engine unless you are in
the seat with the seat belt
fastened around you.
6
2. 2 SEAT AND SEAT BELT
2 CONTROLS
The loader is equipped with an adjustable seat which can
be moved forward or back for operator comfort. (Fig. 2.
2A)
C - 869
For your safety, the loader is equipped with a seat belt.
Before starting the loader, adjust and fasten the beat belt
around you. (Fig. 2. 2B). The Thomas seat and seat belt
also have integrated safety lock switches whereby the
operator must be seated in the seat with the belt securely
fastened, before the loader can be operated.
Adjuster
Fig. 2. 2A
To prevent personal
injury do not start the
WARNING
engine unless you are in
the seat with the seat belt
fastened around you.
2. 3 SEAT BAR
For operator protection, the loader is equipped with a seat
bar. The seat bar is also an integrated part of the braking
system. When the seat bar is raised, the park brake is
automatically applied. Make sure the machine has come to
a full stop before raising the seat bar.(Fig. 2. 3A).
Seat Bar
C-881
Fig. 2. 2B
C3252
To raise the seat bar, lift up on the seat bar until it locks in
the UP position (Fig. 2. 3A).
Fig. 2. 3A
7
2 CONTROLS
In the up position, the seat bar automatically centers the
steering controls in neutral.
To lower the seat bar, place both hands over the latch,
release handles and lift the seat bar slightly (Fig. 2. 3B).
Seat Bar
C690D
Squeeze the latch handles and pull down on the seat bar.
Pull the seat bar down beyond the locking point and
release the latch handles. Completely lower the seat bar to
operating position.
When down, the seat bar releases the park brake. (Fig. 2.
3C).
To avoid personal injury,
lower the boom arms, shut
off the engine, raise the
seat bar and cycle the
hydraulics to ensure they
are locked. Then, unlatch
WARNING
the seat belt and exit the
loader. Do not enter or exit
with the engine running
unless as specified in this
manual or under specific
service and backhoe
operating procedures.
Fig. 2.3B
C3253
Fig. 2. 3C
2. 4 PARKING BRAKE
The loader is equipped as standard equipment with a
parking brake. The brakes are built into the loader chain
drive, and are activated and released when the seat bar is
raised or lowered.
To engage the parking brake, raise the seat bar (Fig 2. 4B).
The brakes should not be engaged while the loader is in
motion or damage occurs to the brake mechanism. To
release the parking brake, simply lower the seat bar (Fig 2.
4A). Should the brake not release, simply move the
control lever slightly forward or rearward to free the lock
mechanism.
8
C3258
Fig. 2. 4A
2 CONTROLS
Fig. 2. 4BC3259
Do not park on a slope. If necessary to park on a slope,
park across the grade, engage the parking brake, ground
the attachment and block the wheels.
To prevent possible
damage to the drive
IMPORTANT
chain, do not engage the
parking brake while the
machine is in motion.
2. 5 THROTTLE CONTROL
The throttle control is mounted next to the operators seat
When the throttle control is set fully back the engine is at
idle speed. Moving the control forward increases the
engine speed. The machine should always be operated
with the throttle fully open.
To avoid personal injury,
lower the boom arms, shut
off the engine, raise the
seat bar and cycle the
hydraulics to ensure they
are locked. Then, unlatch
WARNING
the seat belt and exit the
loader. Do not enter or exit
with the engine running
unless as specified in this
manual or under specific
service and backhoe
operating procedures.
C-870
WARNING
To avoid personal injury
do not start the engine
unless you are in the seat
with the seat belt
fastened around you.
Fig. 2. 5A
2. 6 STEERING CONTROLS
The two steering levers control speed, direction, and
turning the loader. The R.H. lever controls the wheels on
the R.H. side of the loader and the L.H. lever the L.H.
wheels. Loader speed is controlled by the amount each
lever is moved from centre or neutral position. (Fig. 2 6A)
The further away from neutral the faster the travel speed.
For maximum travel speed, move the control levers full
forward or rearward for reverse. For maximum power,
move the control levers only a small amount.
To drive the loader forward in a straight line, move both
control levers forward the same amount (Fig. 2. 6B).
Before shutting off the engine, return the throttle control to
idle position and allow the engine to cool at least 2
minutes. (See Fig. 2. 5).
9
2 CONTROLS
C 3250
To drive the loader in reverse in a straight line, move both
control levers back the same amount.
The loader is turned by moving one lever further forward
than the other. To turn right move the left lever further than
the right lever, to turn left move the right lever further than
the left lever.
Fig. 2. 6A
BUCKET CONTROL
The right hand lever controls the bucket tilt cylinders. (Fig. 2.
7A) Moving the control lever to the right will cause the bucket
cylinders to extend, dumping the bucket. Moving the control
lever to the left will cause the bucket cylinders to retract,
rolling the bucket back.
BOOM CONTROL
The left hand lever controls the boom lift cylinders. (Fig. 2.
7A) Moving the control lever to the left will cause the boom
cylinders to extend, raising the loaders boom arms. Moving the
control lever to the right causes the boom cylinders to retract,
lowering the boom. Moving the control lever to extreme right
will place the boom in float position. This allows the bucket to
follow the contour of the ground as the loader moves
backward.
To avoid personal injury,
lower the boom arms, shut
off the engine, raise the
seat bar and cycle the
hydraulics to ensure they
are locked. Then, unlatch
WARNING
the seat belt and exit the
loader. Do not enter or exit
with the engine running
unless as specified in this
manual or under specific
service and backhoe
operating procedures.
For the loader to turn or “skid-steer” within its own length,
one lever is moved forward and the other back. This causes
the wheels on one side to turn forward and the wheels on
the other side to reverse, turning the loader.
2. 7 HAND CONTROLS
Hand controls to operate the loaders boom and bucket
hydraulic system as well as control the loader travel speed
and direction are available as a factory installed option.
FORWARD REVERSE
C-696-9
LEFT TURN RIGHT TURN
Fig. 2.6B
When the control levers are released, they will automatically
return to the neutral position stopping all hydraulic movement
and travel speed. Before exiting the loader, shut off the engine
and ground the attachment by lowering the boom completely
down to the frame. Raise the seat bar to the locked position.
Move both control levers forward and backward to ensure the
steering controls are locked and move both levers to the left
and right to ensure the hydraulic controls are locked before you
get out of the loader.
AUXILIARY HYDRAULICS:
The foot pedal is used to engage the loaders auxiliary hydraulic
circuit to power an attachment such as a post hole auger. (Fig.2.
8A) Pressing on the toe of the pedal provides hydraulic flow to
the female quick-connect coupling located at the front of the
boom arms. Firm pressure on the toe of the pedal will lock it
into detent position providing a continuous flow of hydraulic
oil to the attachment. Pressing on the heel of the pedal provides
hydraulic flow to the quick-connect coupling reversing the
flow of hydraulic oil. If not locked in detent position, releasing
the pedal will cause it to return to the neutral position stopping
all hydraulic flow. Once the pedal is locked in detent, it can be
returned to neutral by tapping the heel of the pedal.
10
2 CONTROLS
When the auxiliary hydraulic system is not in use return the
pedal to the neutral position, otherwise starting the loader may
be difficult or impossible and damage to the starter motor may
occur.
Raise
Dump
Reverse
Reverse
Lift
Arms
Control Lever Switch (L.H.)
1
Neutral
2
ROPS side
Forward
C3165
Roll Back
IMPORTANT
2. 8
ELECTRICAL AUXILIARY
neutral position when not
Lower
Forward
Fig. 2. 7A
Return the auxiliary
hydraulic
foot pedal to
in use.
CONTROL
Auxiliary Hydraulic (solenoid operated – optional). A switch
located in the L.H. steering control lever (Fig. 2 .8A) is used to
engage the loaders auxiliary hydraulic circuit to power
attachments such as post hole augers, sweepers, etc. By
pressing and holding the switch in position 1 (Fig. 2. 8A)
provides hydraulic flow to the female quick connect coupling
located at the front of the boom arms (Fig. 2. 8B). Releasing
the switch returns the auxiliary hydraulic circuit to neutral,
stopping hydraulic flow.
Seat side
C3166
By pressing and holding the switch in position 2 (Fig. 2. 8A)
provides hydraulic flow to the male quick connect coupling
located at the front of the boom arms (Fig. 2. 8A). Releasing
the switch returns the auxiliary hydraulic circuit to neutral,
stopping hydraulic flow.
For continuous flow to the auxiliary hydraulic circuit, a pushpull switch is located on the R.H. side of the instrument panel.
Placing the push-pull switch in the ON position provides
continuous hydraulic flow to the female quick connect
coupling located at the front of the boom arms (Fig. 2.8A). To
stop hydraulic flow to the auxiliary hydraulic circuit, return the
push-pull switch to the OFF position. When the push-pull
switch on the instrument panel is in the ON position, the switch
located in the L.H. control lever is not operable.
11
2 CONTROLS
C-876
FEMALE QUICK
CONNECT
When the auxiliary circuit is not in use, and before starting the
loader, ensure the push-pull switch located on the R.H. side of
the instrument panel is in the off position, otherwise starting
the loader may be difficult or impossible and damage to the
starter may occur.
Return the auxiliary
WARNING
hydraulic
in the dash to the “OFF”
position when not in use.
Fig. 2 .8B
MALE QUICK
CONNECT
switch located
To avoid personal injury,
lower the boom arms, shut
off the engine, raise the
seat bar and cycle the
hydraulics to ensure they
are locked. Then, unlatch
WARNING
Boom Lift –
9). To raise the boom press on the heel (2) of the pedal. To
lower the boom press on the toe (1) of the pedal. Firm pressure
on the toe (2) of the pedal will lock the boom in float position.
This allows the bucket to follow the ground as the loader
moves backward.
The L.H. pedal is the boom lift control (Fig. 2.
the seat belt and exit the
loader. Do not enter or exit
with the engine running
unless as specified in this
manual or under specific
service and backhoe
operating procedures.
This machine is equipped with electric solenoid controlled
auxiliary hydraulics, if for any reason the loader stops or looses
current when the electric solenoid is engaged, it can be
disengaged by simply turning off the switch located in the
upper panel, or by depressing the poppet located at either end
of the control valve. (See Fig. 2. 8C).
C-702
Fig. 2. 8C
2. 9 FOOT PEDALS
Operation of the boom lift cylinders, bucket tilt cylinders
and auxiliary hydraulic circuit are controlled by foot pedals
(Fig. 2. 9) connected to a hydraulic control valve. The
hydraulic control valve is a series type valve which allows
simultaneous use of both the boom lift and bucket tilt
circuits. The control valve is equipped with a relief valve for
circuit protection.
C - 875
Auxiliary Hydraulics –
the auxiliary hydraulic circuit to power an attachment such as
an auger. Pressing on the toe (3) of the pedal provides hydraulic
pressure to the female quick - connect coupling located at the
front of the boom arms.
Firm pressure on the toe (3) of the pedal places the valve in
detent position providing a continuous flow of hydraulic oil to
the attachment. Pressing on the heel of the pedal (4) provides
hydraulic pressure to the male quick-connect coupling
reversing the flow of hydraulic oil. When the auxiliary circuit
is not in use return the foot pedal to neutral position, otherwise
starting the loader may be difficult or impossible and damage
to the starter may occur.
Bucket Tilt –
control. Pressing on the toe (5) of the pedal will dump the
bucket. Pressing on the heel (6) of the pedal will roll the bucket
back.
The R.H. pedal is the bucket tilt (dump)
The center pedal is used to engage
Fig. 2. 9
12
2.10 QUICK - TACH
2 CONTROLS
The quick - tach, which is standard equipment, allows
changing from one attachment to another quickly without
having to remove bolt or pins.
To operate, (Fig. 2.11A), lift the locking lever (1) up to
completely retract the locking pins. Tilt the quick - tach
frame forward with the bucket tilt cylinders and drive into
the attachment. Retract the bucket tilt cylinders which will
line up the bottom of the attachment with the quick - tach
lock pins. Shut off the engine.
Push the locking lever fully down (Fig. 2.11B item 1)
extending the lock pins through the attachment and securing
the attachment.
Before operating the attachment check that the locking pins
are correctly engaged.
1
IMPORTANT
After hook up to the
attachment check to be
sure the pins and locking
levers are fully engaged.
C3245
1
1
1
Fig. 2. 11A
C3246
Fig. 2.11B
13
2 CONTROLS
2. 11 BOOM SUPPORT
For safety while performing regular service or
maintenance work, the loader is equipped with boom
support pins. The boom support pins, when extended,
prevent the boom arms from dropping if hydraulic
pressure is relieved or the foot control pedals accidentally
cycled.
To operate the boom support, first remove any bucket or
attachment from the quick-tach; raise the boom arms to
full height; push the two boom lock pin handles (Fig. 2.
11A), located directly in front of the operator at the top of
the operator compartment, outward, extending the boom
support pins (See Fig. 2. 11B). Slowly lower the boom
arms down onto the pins. To retract the support pins, first
lift the boom arms off of the pins before retracting.
Fully retract the boom
IMPORTANT
supports before raising
or lowering boom arms.
C729
Fig. 2.11A
C730
Safe Shutdown Procedures
-
Stop machine
- Lower the bucket and other attachments flat on the
ground.
- Position controls in neutral.
- Engage parking brake.
- Idle engine for short cool-down period.
- Stop engine.
- Cycle hydraulic controls to eliminate pressure.
- Raise operator seat bar.
- Check that controls are locked in neutral.
- Unbuckle seat belt.
- Remove ignition key and lock covers and closures.
Fig. 2.11B
C - 361
14
C - 362
Don’t give anyone the key to an accident.
2 CONTROLS
2. 12 ELECTRICAL PANEL
The loader is equipped with a 12 volt, negative ground
electrical system. The fuse and relay panel is located in the
engine compartment just in front of the battery box. The
panel consist of the following:
1. Glow Plug Relay
2. Starter Relay
3. Engine Fuel Stop Timer
4. Fuse Panel
Optional equipment for the loader are back up alarm, horn
and work lights (Fig. 2. 12)
Glow Plug Relay
1
13
5. Stop Timer (Y/B)
6. Alternator (B/W)
7. Electrical Auxiliary
8. Spare
9. Starter (W/B)
Glow Plug (R/W)
10. Valve Locks (Or/W)
11. Horn
12. Spare
13. From ACC Switch (B/W 12)
14. Circuit Breaker
Starter Relay
Stop Timer
2
3
C3247
5
6 10
7 11
8 12
4
9
14
Fig. 2.12
15
3 OPERATION
3...OPERATION
3. 1 Starting Instructions
3.1 A Pre-Starting Inspection
3.1 B Starting Procedure
3.1 C Shut-Off Procedure
3.1 D Shut-Off Procedure Manual
3. 2 Operating Procedure
3. 3 Filling From a Pile
3. 4 Digging With a Bucket
3. 5 Leveling and Backfilling
3. 6 Auxiliary Hydraulics
3. 7 Lifting
3. 8 Towing
3. 9 Securing
3. 10 Battery Maintenance and Boosting
3. 11 Lowering Lift Arms
16
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