Pinion Flange: Service and Repair

Standard Rear Axle Assembly:

Rear Axle Assembly With Traction Control (Acceleration Slip Regulation):

^ Tools Required:
- J 8614-01 Pinion Flange Remover and Installer
- J 23911 Pinion Oil Seal Installer

REMOVE OR DISCONNECT

1. Raise and suitably support vehicle.
2. Propeller shaft.





3. Mark position of drive pinion gear yoke (3), drive pinion gear (23) and drive pinion gear nut (1) so proper drive pinion gear inner and outer bearing preload can be maintained.





4. Drive pinion gear nut (1) and drive pinion gear washer (2), using J 8614-01.
- Use a suitable container to hold any fluid that may drain from rear axle.





5. Drive pinion gear yoke (3), using J 8614-01.
6. Drive pinion gear seal (6) by driving it out of rear axle housing (16) with a blunt chisel.

Important: Do not damage rear axle housing (16) when removing drive pinion gear seal (6).


Inspect
- Drive pinion gear seal surface of drive pinion gear yoke (3) for tool marks, nicks, or damage, such as a groove worn by drive pinion gear seal (6). If damaged, replace drive pinion gear yoke (3).
- Housing bore and remove any burrs that might cause leaks around outer diameter (OD) of drive pinion gear seal (6).

INSTALL OR CONNECT

NOTICE: Always use the correct fastener in the correct location. When you replace a fastener, use ONLY the exact part number for that application. The Manufacturer will call out those fasteners that require a replacement after removal. The Manufacturer will also call out the fasteners that require thread lockers or thread sealant. UNLESS OTHER WISE SPECIFIED, do not use supplemental coatings (paints, greases, or other corrosion inhibitors) on the threaded fasteners or fastener joint interfaces. Generally, such coatings adversely affect the fastener torque and the joint clamping force, and may damage the fastener. When you install fasteners, use the correct tightening sequence and specifications. Following these instructions can help you avoid damage to parts and systems.





1. New drive pinion gear seal (6); using J 23911.
2. Apply chassis lubricant or equivalent, to the outside diameter of drive pinion gear yoke (3) and sealing lip of new drive pinion gear seal (6).
3. Drive pinion gear yoke (3).
4. Drive pinion gear washer (2) and drive pinion gear nut (1) finger tight.
5. While holding drive pinion gear yoke (3), using J 8614-01, tighten drive pinion gear nut (1) to the same position marked, then tighten 1.59 mm (1/16 inch) beyond the alignment mark.
6. Propeller shaft.
7. Check rear axle lubricant level, add if required.
8. Lower vehicle.