Chrysler Conquest 1988 Service Manual page 1031

REAR AXLE
- Troubleshooting
3-13
TROUBLESHOOTING
NOBEAAF
Symptom Probable cause Remedy
AXLE SHAFT,
AXLE HOUSING
Noise while wheels Brake drag Replace
are rotating Bent axle shaft
Worn or scarred axle shaft bearing
Grease leakage Worn or damaged oil seal
Malfunction of bearing seal
Replace
DRIVE SHAFT
Noise Wear, play or seizure of ball joint
Excessive drive shaft spline looseness
Replace
TORQUE TUBE
Noise
DIFFERENTIAL
Abnormal noise
during driving
or gear changing
Wear, play or seizure of bearing
Excessive final drive gear backlash
Insufficient drive pinion preload
Replace
Adjust
NOTE
Excessive differential gear backlash
Worn spline of a side gear
Loose spline coupling self-locking nut
Adjust or replace
Replace
Retighten or replace
In addition to a malfunction of the differential carrier components, abnormal noise can also be caused by the
universal joint of the propeller shaft, the axle shafts, the wheel bearings, etc. Before disassembling any parts, take
all possibilities into consideration and confirm the source of the noise.
Abnormal noise
when cornering
Damaged differential gears
Damaged pinion shaft
Nicked and/or abnormal wear of inner and outer
clutch plates
Contaminated gear oil
Replace
Gear noise
Insufficient gear oil quantity
Improper final drive gear tooth contact adjustment
Incorrect final drive gear backlash
Improper drive pinion preload adjustment
Refill
Adjust or replace
Adjust
Damaged, broken, and/or seized tooth surfaces
of the drive gear and drive pinion
Replace
Damaged, broken, and/or seized drive pinion
bearings
Damaged, broken, and/or seized side bearings
Damaged differential case
Contaminated gear oil
NOTE
Insufficient gear oil quantity
Refill
Noise from the engine, muffler vibration, transmission, propeller shaft, wheel bearings, tires, body, etc., is easily
mistaken as being caused by malfunctions in the differential carrier components. Be extremely careful and
attentive when performing the driving test, etc.
Test methods to confirm the source of the abnormal noise include: coasting, acceleration, constant speed driving,
raising the rear wheels on a jack, etc. Use the method most appropriate to the circumstances.