Transfer Case: Description and Operation

DESCRIPTION
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 Power Transfer Unit is sealed from the transaxle and has its own oil sump. The Unit uses Mopar SAE 80W-90 Gear and Axle Lubricant (MS-9020) and holds 1.15 liters (1.22 quarts).

Service of the Power Transfer Unit is limited to:
- Fluid Change
- 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.








OPERATION
The Transfer Unit provides the power to the rear wheels through a hypoid ring gear and pinion set.