Inspection Procedure 3
DIAGNOSISSTEP 1. Check the tooth contact (engagement) of the drive gear and drive pinion.
If faulty, adjust or replace the part. Then go to Step 9.
If normal, go to Step 2.
STEP 2. Check the side bearing for looseness, wear or damage.
If loose, worn or damaged, adjust or replace the part. Then go to Step 9.
If normal, go to Step 3.
STEP 3. Check the drive pinion bearing for wear or damage.
If worn or damaged, replace the part. Then go to Step 9.
If normal, go to Step 4.
STEP 4. Check the drive gear and drive pinion for wear.
If worn, replace the part. Then go to Step 9.
If normal, go to Step 5.
STEP 5. Check the side gear thrust washer or pinion shaft for wear.
If worn, replace the part. Then go to Step 9.If normal, go to Step 6.
STEP 6. Check the drive gear and differential case for strain, and the gear for damage.
If strained or damaged, replace the part. Then go to Step 9.
If normal, go to Step 7.
STEP 7. Check for the engagement of foreign matter.
If foreign matter is found, remove it and then inspect. If necessary, replace the part. Then go to Step 9.
If normal, go to Step 8.
STEP 8. Check the oil level.
Check that gear oil level is not 8 mm (0.3 inch) below the bottom of filler plug hole.
If low, refill Hypoid gear oil API classification GL-5 or higher, SAE viscosity Number 90, 80W. Then go to Step 9.
STEP 9. Check symptoms.
Check that no noise is generated.