Pinion Flange: Service and Repair

^ Tools Required:
- J 8614-01. Companion Flange Holder and Remover
- J 22388 Pinion Oil Seal Installer (9 1/2 inch ring gear)
- J 22836 Pinion Seal Installer (8 1/2 inch ring gear)

Scribed Marks:

Removing The Drive Pinion Nut:

Installing The Pinion Seal:

Installing The Pinion Flange:

REMOVE OR DISCONNECT
1. Raise the vehicle and support it with suitable safety stands.
2. The propeller-shaft from the pinion flange.

Important: The driveline components in this vehicle have been factory system-balanced. System balance provides a smoother running driveline operation. However, it is essential that the positions of all driveline components relative to the propeller shaft and axles be observed end accurately reference marked prior to disassembly. These components include the propeller shafts, drive axles, pinion flanges, output shafts, etc. All components must be reassembled in the exact relationship to each other as they were when removed. Specifications and torque values, as well as any measurements made prior to disassembly, must be followed to maintain the factory balance.

3. Scribe a line on the pinion stem, pinion nut and the pinion flange. Use the scribed reference as a reinstallation guide.).
4. Using J 8614-01 to the pinion flange, remove the pinion nut from the yoke.
5. The pinion flange yoke from the axle carrier using J 8614-01.
- Use the special nut and forcing screw to remove the flange.
6. The pinion oil seal from the axle carrier using J 22388 or J 22836.

Inspect
- The pinion flange for a smooth oil seal surface, for worn drive splines, damaged. ears and for smoothness of the bearing contact surface. Replace if necessary.

7. The dust deflector.
- Tap the deflector from the flange if replacement is necessary.
- Clean up the stake points on the flange.
- Clean all foreign material from the contact area.

INSTALL OR CONNECT

Important: All components must be reassembled in the exact relationship to each other as-they were when removed. Specifications and torque values, As well as any measurements made-prior to-disassembly must be followed to maintain, the factory, balance.

1. The dust deflector onto the flange.
- Stake the new deflector at three new equally spaced positions. Staking must be such that the seal operating surface is not damaged.
2. The axle oil seal.
A. Pack the cavity between the lips of the oil seal with extreme pressure lithium-base Lubricant.
B. Using J 22836 for the 8 1/2 inch ring gear or J 22388 for the 9 1/2 inch ring gear to press the oil seal into the bore.

NOTICE: Do not hammer the pinion flange onto the pinion shaft or component damage will occur.

3. The pinion flange yoke onto the pinion using J 8614 01.
- Place washer and nut on the pinion threads and tighten the nut to the original scribed position using the scribe marks as a reference.

Measure
^ The rotating torque of the pinion.

- Tighten the pinion nut if addition torque is required.

4. The propeller shaft to pinion flange.
5. Lower the vehicle.