Inspection Procedure 7

INSPECTION PROCEDURE 7: Heat

DIAGNOSIS
STEP 1. Check the oil level.
Remove the filler plug and check the gear oil level.
Q: Is the gear oil level more than 8 mm (0.3 inch) below the bottom of the filler plug hole?
YES: Check the oil leakage from differential carrier, and repair if necessary. Then, refill Hypoid gear oil API classification GL-5 or higher; Above -23°C (-10°F): SAE 90, 85W-90, 80W-90, From -34 to -23°C (-30 to -10°F): SAE 80W, 80W-90, Below -34°C (-30°F): SAE 75W. Then go to Step 3.
NO: Go to Step 2.

STEP 2. Check for excessive gear backlash.
Q: Is the gear backlash correct?
YES: Go to Step 3.
NO: Adjust the backlash. Then go to step 3.

STEP 3. Retest the system.
Q: Is the heat eliminated?
YES: The procedure is complete.
NO: Start over at Step 1.