Traction Drive Troubleshooting - MacDon M105 Operator's Manual

6.5 Traction Drive Troubleshooting

Symptom Problem
Low hydraulic oil level
Warning alarm
Low hydraulic pressure
sounds and trans
oil pressure is Foreign material shorting
displayed sender
Short in alarm wiring
Faulty sender
Internal pump or motor
damage
Insufficient torque at drive
wheels
Loose or worn controls
Wheels lack pulling
ability on a grade
or pulling out of a
ditch
Air in system
Brakes binding or not
releasing fully
Relief valve in tandem pump
dirty or damaged
Leakage at pump or motor
With steering
wheel centered, Wheels not in same speed
one wheel pulls range
more than the
Faulty relief valve
other
169890
TROUBLESHOOTING
Solution
Stop engine, and add oil to hydraulic
system.
Contact Dealer.
Contact Dealer.
Move ground speed range control to
field position (1), and reduce ground
speed.
Check controls.
Use proper oil.
Check oil level and leaks.
Check hydraulic oil filters.
Check pressure on brake release
valve (min. 200 psi [1379 kPa]).
Replace relief valve.
Contact Dealer.
Repair or replace valve. Contact
Dealer.
327
Section
Checking and
Filling Hydraulic
Oil, page 288
Contact Dealer.
Contact Dealer.
Driving Forward,
page 97
5.7.3 Ground
Speed
Lever (GSL)
Adjustments, page
212
Lubricants, Fluids,
and System
Capacities, page
199
Checking and
Filling Hydraulic
Oil, page 288
5.7.9 Hydraulic
System, page 287
Contact Dealer.
Revision A