F-6
35 Series 4WD, Model - 3535, 4035, 4535 and 5035 SM June’08
Front Axle
2. TROUBLESHOOTING (Contd.)
TROUBLE PROBABLE CAUSE REMEDY REF.
Oil leakage form
gaskets and seals
Excessive wearing
out of input
flange spline
Fatigue failure of
pinion teeth
See if the fracture
line is well
defined (wave
lines, beach lines)
Pinion and ring
teeth breakage
Side gear spline
worn out.
Replace all
scratched washers
(Excessive back-
lash)
Thrust washer
surface worn out
or scratched.
Inner diameter of
tapered roller
bearing worn out
Bent or broken
halfshaft
Halfshaft broken
at wheel side
1. Prolonged functioning at high
temperature of the oil
2. Oil gasket assembled incorrectly
3. Seal lip damaged
4. Contaminated oil
1. Exhaustive use
2. Pinion nut loosened
3. Pinion axle back-lash
1. Exhaustive use
2. Continuous overload
1. Crash load of differential
components
1. Excessive use
1. Insufficient lubrication
2. Incorrect lubrication
3. Contaminated oil
1. Excessive use
2. Excessive pinion axial back-lash
3. Insufficient lubrication
4. Contaminated oil
1. Vehicle intensively operated or
overloaded
1. Wheel support loosened
2. Beam body bent
Replace the gasket or seal and
matching surface if damaged.
Use correct lubrication and replace
at recommended intervals.
Replace the flange.
Check that the pinion spline is not
excessively worn out.
Replace bevel gear set if required.
Replace bevel gear set
Check and/or replace other
differential components.
Replace differential gear group.
Replace halfshaft if required.
Use correct lubrication and fill up to
right level.
Replace at intervals recommended.
Replace all scratched washers and
those with 0.1mm thickness lower
than the new ones.
Replace bearing.
Check pinion axial back-lash.
Use proper lubrication, fill up to
right level and replace at
recommended intervals.
Replace
Replace
Check that wheel support is not
worn out or wrongly adjusted.
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