Nortrac 35XT Owner's Manual page 49

2.16.1.3 Rear Axle and Brake Faults and Troubleshooting
Table 2-4 Rear Axle and Brake Faults and Troubleshooting
Fault
1. Increased noise in the
central drive.
2. Small conical gear and
the differential bearing
overheat.
3. Abnormal noises from the
final drive..
4. No braking control.
5. Brakes get hot.
6. The tractor pulls in one
direction when braking.
Maintenance Instructions
Causes
(1) The bearing play of the small conical
gear is too large.
(2) Gear engagement is abnormal.
(3) The bearing of the conical gear pair or
the gear pair is damaged.
(4) The differential shaft is worn or
locked.
(5) The planetary gear or gasket is worn.
(6) The differential bearing is worn or
damaged.
(1) The pre-load force is too high.
(2) Poor lubrication.
(3) Backlash at gear pair side of conical
gear is too small.
(1) The bearing, gear or shaft is damaged.
(1) The free play of the brake pedal is too
large.
(2) The brake shoes are severely worn or
warped.
(3) The engagement of the brake pedal is
misadjusted.
(1) The brake shoes do not return.
(2) The brake shoes do not completely
disengage from the brake drums.
(1) The free play of the left and right
brake pedals are not the same.
(2) The brake shoes on one side str
damaged or worn unevenly.
(3) The air pressure of the two rear tires
is not the same.
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Troubleshooting
(1) Adjust according to requirements.
(2) Readjust according to
requirements.
(3) Replace the bearing or the gear.
(4) Replace the differential gear shaft.
(5) Replace the planetary gear or
shim.
(6) Replace the differential bearing.
(1) Readjust the pre-load force of the
bearing.
(2) Check the lubricating oil level and
add if necessary.
(3) Readjust the gear backlash.
(1) Replace the bearing, gear or shaft.
(1) Readjust the free play of the brake
pedal.
(2) Replace the brake shoes.
(3) Adjust the engagement of the
brake pedal according to the
specifications.
(1) Replace the return spring.
(2) Make adjustments according to
requirements.
(1) Adjust.
(2) Replace the brake shoes.
(3) Check and inflate the tires
according to the specifications.