MacDon M105 Operator's Manual page 343

Symptom Problem
One final drive disengaged
Steering controls worn or
defective
One wheel does
High pressure relief valve
not pull in forward
stuck open, damaged seat
or reverse
Brakes binding or not
releasing fully
Pump arm or shaft is broken
Damaged hydraulic lines
preventing proper oil flow
Ground speed range control
not working
Failed pump, motor or
power hub
Mechanical interference in
steering or ground speed
linkage
Excessive noise
from drive system
Brakes binding or not
releasing fully
Faulty pump or motor
Air in system
Hydraulic line clamps loose
Not properly tightened
Hydraulic oil filter
leaks at seal
Damaged seal or threads
169890
TROUBLESHOOTING
Solution
Engage final drive.
Check GSL and steering for loose,
worn or damaged ball joints and
connecting rods.
Check valve, and clean or replace.
Check pressure on brake release
valve) (min. 200 psi [1379 kPa]).
Contact Dealer.
Adjust, repair, replace.
Check pressure on brake release
valve) (min. 200 psi [1379 kPa]).
Contact Dealer.
Check lines for leakage.
Tighten clamps.
Tighten filter element.
Replace filter or filter head.
329
Section
Final Drives, page
115
5.7.3 Ground
Speed
Lever (GSL)
Adjustments, page
and
212
5.7.4 Steering
Adjustments, page
214
Contact Dealer.
5.7.3 Ground
Speed
Lever (GSL)
Adjustments, page
and
212
5.7.4 Steering
Adjustments, page
214
Contact Dealer.
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Revision A