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 TROUBLE-SHOOTING GUIDE
CAUSE
INDICATED BY
REMEDY
DOZER NOT OPERATING:
1. Faulty control linkage
-
Check all linkages for proper
adjustment
2. Worn or damaged control
Low or zero pressure to dozer
Replace defective unit
valve
cylinder
3. Defective dozer cylinder
Blade drops when the control
Replace or repair dozer
lever is in the hold position
cylinder
HYDRAULIC BRAKES
INOPERATIVE:
1. Insufficient fluid in master
-
Refill master cylinder and
cylinder
bleed brakes
Note: Use only Type A trans.
fluid
2. Defective master cylinder
Pedal goes slowly to floor and
Replace or repair master
fluid level remains constant
cylinder
3. Defective transmission
Pedal goes slowly to the floor
Remove transmission brake
cylinder seals
and fluid level decreases
assembly and replace seals
(Note: No external leaks)
4. Defective brake spool valve
Pedal goes slowly to the floor
Remove brake spool valve
or seals
and fluid level decreases
and replace seals
(Note: No external leaks)
STEERING DIFFICULT OR
INOPERATIVE:
1. Oil level Is low
Slow or hard steering
Fill to proper level
2. Dirt In system
a) Slow or hard steering
Drain, flush and refill with
b) Continuous steering wheel
clean fluid
rotation
3. Plugged line
Slow or hard steering
Check lines
4. Worn sleeve, spool or orbit
Slow or hard steering
Check and replace
gear
5. Defective pump or actuator
a) Slow or hard steering
Repair or replace defective
b) No response
pump or actuator
6. Linkage or valve binding
a) Steering wheel does not
Realign linkage or valve
center
b) Continuous steering wheel
rotation
7. Lines hooked up Incorrectly
Wrong response to steering
Reconnect lines
wheel
8. Orbit gear misaligned
Wrong response to steering
Realign orbit gear
wheel
Rev. 760501
K300
400-5.6
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