MacDon 9000 Operator's Manual page 128

TROUBLE SHOOTING
PROBLEM
C.AUSE REMEDY
REF.
Both wheels will not pull
Low oil level. Check oil reservoir
90
in forward or reverse.
level.
Power wheels Engage power wheels. 105
disengaged.
Damaged hydraulic Replace damaged lines.
*
lines preventing proper
oil flow.
Steering controls worn Check variable speed
*
or defective. lever and steering for
loose, worn or dam-
aged ball joints and
connecting rods.
Speed-range control Repair speed-range
*
not working. control linkage.
Pump arms have Repair or tighten.
*
broken shaft or loose
hardware.
Brakes binding or not Adjust brakes and 107
releasing fully. remove any foreign
objects.
Charge pressure relief Check the valve adjust-
*
valve misadjusted or ment. Check valve parts
damaged. and seat.
High pressure relief
Check valve and clean
*
valve stuck open, dam- or replace.
aged seat.
Failed pump or motor.
Repair or replace pump
*
or motor.
One wheel does not
One power wheel dis-
Engage power wheel. 105
pull in forward or
engaged.
reverse.
Pump arm has broken Replace shaft or roll
*
shaft or sheared roll pin.
pin.
Steering controls worn Check variable speed
*
or defective. lever and steering for
loose, worn or dam-
aged ball joints and
connecting rods.
Damaged hydraulic Replace damaged lines.
*
lines preventing proper
oil flow.
*
See your Windrower dealer.
124