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4. Rear axle common trouble and its elimination
Fault symptom
Possible cause
Eliminating method
Abnormal sound
from the rear axle
(abnormal sound)
When the vehicle is starting
1) Excessive clearance between the
differential gear
2) Excessive clearance between the driving
and the driven gear
3) Looseness of the connecting flange and
the propeller shaft
4) Too small pretightening force of the
drive gear bearing
5) Looseness of the fixing bolt and nut of
the driving gear
When the vehicle turning
1) There has abrasion or damage to the
axle shaft gear, driving gear, spider,
thrust shim and the axle shaft bearing
and etc
2) Too low oil level
1
）
Adjust the clearance
2
）
Adjust the clearance
3
）
Tighten it to specified torque
4
）
Adjust the pretightening force
5
）
Tighten it to specified torque
1
）
Adjust or replace the faulted parts
2
）
Fill up the lubrication
Abnormal sound of
the rear axle
( improper sound)
When the vehicle is running:
1) Excessive clearance between the driving
and the driven gear
2) Abrasion or damage of the bearing
3) Abrasion or damage of the gear
4) Too low oil level
When running with inertance
1) Too small clearance between the driving
and the driven gear
2) Abrasion or damage of the bearing
3) Incorrect gear engaging position
4) Too low oil level
1) Adjust the clearance
2) Replace the bearing
3) Make adjustment or replacement
4) Fill up the lubrication
1) Adjust the clearance
2) Replace the bearing
3) Adjust or replace the faulted parts
4) Fill up the lubrication
Leakage of the rear
axle lubrication
1. Abrasion, looseness or damage of the oil
seal
2. Looseness of the differential lock bolt or
damage of the gasket
3. Damage of the differential carrieer
mating surface
4. Looseness of the oil draining plug or
damage of the gasket
1. Replace the oil seal
2. Tighten to specified torque and
replace gasket
3. Make trimming and replace the
differential housing if necessary
4. Replace the gasket and tighten
screw plug to specified torque
