General Diagnostic Table: Inspection
WARNING: This page is about a different car, the 2005 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
PROBLEM SYMPTOM CHART
| Symptom or trouble | Possible cause | Remedy |
|---|---|---|
| 1. 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 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 side retainer and oil seal. | Repair or replace. | |
| 2. Seizure
NOTE:
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. | |
| 3. Damage
NOTE:
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 crown gear bolt. | Retighten. | |
| Damage due to overloading. | Replace. | |
| 4. Noises when starting or shifting gears
NOTE:
Noises may be caused by differential assembly, 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. | |
| 5. Noises when cornering | Damaged differential gear. | Replace. |
| Excessive wear or damage of thrust washer. | Replace. | |
| Broken pinion mate shaft. | Replace. | |
| Seized or damaged side bearing. | Replace. | |
| 6. Gear noises
NOTE:
Since noises from engine, muffler, transmission, propeller shaft, wheel bearings, tires, and body are sometimes mistaken for noises from differential assembly, be careful in checking them. Inspection methods to locate noises include coasting, accelerating, cruising, and jacking-up all four wheels. Perform these inspections according to condition of trouble. When listening to noises, shift gears into four wheel drive and fourth speed position, trying to pick up only differential noise.
|
Improper tooth contact of hypoid gear. | Readjust or replace hypoid gear set. |
| Improper backlash for hypoid gear. | Readjust. | |
| Scored or chipped teeth of hypoid gear. | Replace hypoid gear set. | |
| Seized hypoid gear. | Replace hypoid gear set. | |
| Improper preload for front or rear bearings. | Readjust. | |
| Seized, scored, or chipped front or rear bearing. | Replace. | |
| Seized, scored, or chipped side bearing. | Replace. | |
| Vibrating differential carrier. | Replace. |