Transfer Case: Description and Operation

The Power Transfer Unit (P.T.U.) is attached to a modified automatic transaxle case where the right half shaft extension housing would normally be located. The Transfer Unit provides the power to the rear wheels through a hypoid ring gear and pinion set.

The Power Transfer Unit is sealed from the transaxle and has its own oil sump. The Unit uses SAE 85W-90 gear lubricant and holds 1.15 liters (1.22 quarts).

Fill Plug Location:

The Power Transfer Unit fill plug is located on the end cover. Do not mistake the black plastic inspection plug located on the P.T.U. case for the fill plug.

Service of the Power Transfer Unit is limited to:
- Seals
- Gaskets
- One ball bearing
- Output flange
If the ring gear and pinion, any tapered roller bearings, case, covers, or pinion carrier fail the entire unit must be replaced.