MacDon 9250 Operator's Manual page 129

SYMPTOM
Both wheels will not pull
in forward or reverse.
One wheel does not pull
in forward or reverse.
* See your Windrower dealer.
Form # 46584
TROUBLE SHOOTING
PROBLEM
Low oil level.
Power wheels
disengaged.
Damaged hydraulic
lines preventing proper
oil flow.
Steering controls worn
or defective.
Speed-range control not
working.
Pump arms have
broken shaft or loose
hardware.
Brakes binding or not
releasing fully.
Charge pressure relief
valve misadjusted or
damaged.
Failed pump or motor.
One power wheel
disengaged.
Pump arm or shaft are
broken.
Steering controls worn
or defective.
Damaged hydraulic
lines preventing proper
oil flow.
Brakes binding or not
releasing fully.
127
SOLUTION
Check oil reservoir
level.
Engage power wheels.
Replace damaged lines.
Check variable speed
lever and steering for
loose, worn or dam-
aged ball joints and
connecting rods.
Check speed-range
wiring. Check for faulty
servo or blockage in
hose.
Repair or tighten.
Adjust brakes and
remove any foreign
objects .
Check the valve
adjustment. Check
valve parts and seat.
Repair or replace pump
or motor.
Engage power wheel.
Replace arm or shaft.
Check variable speed
lever and steering for
loose, worn or dam-
aged ball joints and
connecting rods.
Replace damaged lines.
Adjust brakes and
remove any foreign
objects.
Issue 11/06 Web Rev_01
REF.
89
105
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108,
109
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105
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108,
109