A. Inspect Transfer Case

1. Road test the vehicle to check for any abnormal noise or grinding sounds from the transfer case. If any abnormal noises or grinding sounds are heard, the transfer case must be replaced. (Ignore normal gear noise such as high pitch whine.)

2. Raise the vehicle on an appropriate hoist.





3. Remove the transfer case oil filler plug. Check the amount of oil in the transfer case by inserting the provided transfer case oil level gauge (PN MR470416) into the oil filler hole (Figure 1).

^ If the transfer case oil level registers anywhere on the gauge, the oil level is sufficient, continue with Step 5.

^ If the transfer case oil level does NOT register on the gauge, continue with Step 4.

NOTE:
If fill plug shows signs of leakage, replace the fill plug gasket.





4. For all vehicles with low oil levels: Remove the transfer case oil drain plug (Figure 2).

^ If oil runs out or drips continuously, transfer case replacement is NOT required.

^ If NO OIL or only A FEW DROPS OF OIL come out, the transfer case MUST be replaced. Continue with Section B.

NOTE:
If drain plug shows signs of leakage, replace the drain plug gasket.