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AWD SYSTEM
[T1001 3-4
T TROUBLESHOOTING
1 . Rear Differential
Symptom and possible cause
Remedy
Oil leakage
" Worn, scratched, or incorrectly seated front or side oil seal . Scored,
battered, or excessively worn sliding surface of companion flange .
Repair or replace.
Clogged or damaged air breather .
Clean, repair or replace .
Loose bolts on differential spindle or side retainer, or incorrectly
fitted O-ring .
Tighten bolts to specified torque . Replace O-ring .
Loose rear cover attaching bolts or damaged gasket.
Tighten bolts to specified torque . Replace gasket and apply liquid
packing.
Loose oil filler or drain plug .
Retighten and apply liquid packing .
" Wear, damage or incorrectly fitting for spindle, side retainer and oil
seal .
Repair or replace.
Seizure
Seized or damaged parts should be replaced, and also other parts should be thoroughly checked for any defect and should be repaired
or replaced as required .
Insufficient backlash for hypoid gear .
Readjust or replace.
Excessive preload for side, rear, or front bearing .
Readjust or replace.
Insufficient or improper oil used .
Replace seized part and fill with specified oil to specified level .
Damage
Damaged parts should be replaced, and also other parts should be thoroughly checked for any defect and should be repaired or replaced
as required .
Improper backlash for hypoid gear .
Replace .
Insufficient or excessive preload for side, rear, or front bearing .
Readjust or replace.
Excessive backlash for differential gear.
Replace gear or thrust washer .
" Loose bolts . and nuts such as drive gear bolt .
Retighten.
Damage due to overloading .
Replace .
Noises when starting or shifting gears
Noises may be caused by differential ASSY, universal joint, wheel bearing, etc. Find out what is actually making noise before disassembly .
Excessive backlash for hypoid gear .
Readjust .
Excessive backlash for differential gear.
Replace gear or thrust washer .
Insufficient preload for front or rear bearing .
Readjust .
Loose drive pinion nut .
Tighten to specified torque .
Loose bolts and nuts such as side bearing retainer attaching bolt. Tighten to specified torque .
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Table of Contents
Troubleshooting
