Nortrac 35XT Owner's Manual page 50

2.16.1.4 Four-Wheel Drive System Faults and Troubleshooting
Table 2-5 Four-Wheel Drive System Faults and Troubleshooting
Fault
1. The front tire
excessive wear.
2. The front wheel shakes.
3. Loud noise (four wheel
drive tractors)..
4. The drive shaft and
sleeve overheat.
5. Loud noise in the transfer
case.
Maintenance Instructions
Causes
(1) The rim or the radial plate of the front
wheel is deformed.
(2) The toe-in has been improperly adjusted.
(3) The bearing pins of the steering knuckle
has and the oil cylinder are severely worn.
(4) The tire pressure is too low.
(5) The front drive axle does not disengage
during operation.
(6) The drive tread of the front tire is mounted
backwards.
(1) The fastening nuts and bolts for the ball
pins, king pin, oil cylinder or the steering
arm are loose.
(2) The toe-in has been improperly adjusted.
(3) The clearance of the bearing is too great,
or the bearing is severely worn.
(4) The rim of the front wheel is severely
deformed.
(1) Engagement trace of the front central drive
gear is bad.
(2) The clearance of the central drive bearing is
too great or the bearing is damaged.
(3) The differential axle is worn or damaged.
(4) The planetary gear or gasket is worn.
(5) The meshing of the final planetary gear
pair is bad.
(1) The transmission shaft is severely bent or
deformed, creating friction.
(1) Using too high a gear.
(2) The bearing or the gear is badly worn.
(1) Align the front wheel rim or
the radial plate.
(2) Adjust the toe-in.
(3) Replace the bearing pin(s).
(4) Inflate the tires according to
the specifications.
(5) Disengage the front drive
axle or repair it.
(6)Reinstall the tire according to
requirements.
(1) Check and tighten.
(2) Adjust the toe-in.
(3) Adjust or replace the bearing.
(4) Align or replace the front
wheel rim.
(1) Readjust the gear meshing
backlash.
(2) Adjust or replace.
(3) Replace the differential axle.
(4) Replace the planetary gear or
the shims.
(5) Replace the planetary drive
gear.
(1) Replace the transmission
drive shaft.
(1) Put into low gear.
(2) Replace.
44
Troubleshooting