Rear Drive Axle/Differential - Dana 80

Drive Pinion Flange and Drive Pinion Seal

Part 1 Of 2:

Special Tool(s)

Removal
1. Raise the vehicle on a hoist or raise the rear end of the vehicle with a jack. Install safety stands under the frame rails and lower the jack or hoist far enough to allow the rear axle to drop into the rebound position for working clearance.





2. NOTE: To maintain driveline balance, mark the driveshaft components so they can be reinstalled in their original positions.

Disconnect the driveshaft at the rear axle, and position it aside.





3. NOTE: Index-mark the flange to the pinion shaft.

While using a suitable tool to prevent the flange or yoke from turning, remove the pinion nut.





4. Using the 2 Jaw Puller, remove the flange or yoke.





5. Using the Bushing Remover and the Slide Hammer, remove the pinion seal.
6. Clean the rear axle pinion seal seat.

Installation

1. CAUTION: If the pinion seal becomes cocked during installation, remove the seal and install a new one. Make sure the garter spring remains in place during assembly. If the spring is dislodged, a new pinion seal must be installed.

Install the seal using a suitable driver.
^ Coat the pinion seal (rubber lips) with lubricant.





2. Using the special tool, install the pinion flange.





3. CAUTION: Always install a new washer and locknut.

Install the new washer and locknut.
4. Install the driveshaft.