Drive Pinion Flange Yoke and/or Oil Seal Replacement
^ 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 Oil Seal Installer (8 5/8 inch ring gear)
Removal Procedure
1. Raise the vehicle and suitably support the vehicle with safety stands.
Important: Observe and accurately mark the positions of all driveline components relative to the propeller shaft and axles prior to disassembly. These components include the propeller shaft, drive axles, pinion flanges, output shafts, etc. Reassemble all components in the exact relationship the components had to each other during removal. Follow specifications and torque values. Follow any measurements made prior to disassembly. Refer to Rear Axle Description.
2. Remove the propeller shaft from the pinion flange. Refer to Propeller Shaft Replacement - One Piece or Propeller Shaft Replacement - Two Piece.
3. Make an alignment mark on the pinion stem, pinion nut and pinion flange (1).
4. Hold the pinion flange using the J 8614-01.
5. Remove the pinion nut from the yoke.
6. Remove the pinion flange yoke from the axle carrier using the special nut and forcing screw of the J 8614-01.
7. Remove the pinion oil seal from the axle carrier.
8. Inspect for a smooth oil seal surface, worn drive splines, damaged ears on the pinion flange and a smooth bearing contact surface.
9. Replace parts as necessary.
10. Tap the dust deflector from the flange if replacement is necessary.
11. Clean the stake points on the flange.
12. Clean foreign material from the contact area.
Installation Procedure
Important: Observe and accurately mark the positions of all driveline components relative to the propeller shaft and axles prior to disassembly. These components include the propeller shaft, drive axles, pinion flanges, output shafts, etc. Reassemble all components in the exact relationship the components had to each other during removal. Follow specifications and torque values. Follow any measurements made prior to disassembly.
1. Stake the new dust deflector onto the flange at three new equally spaced positions in a way that avoids damage to the seal operating surface.
2. Pack the cavity between the lips of the oil seal with an extreme pressure lithium-base lubricant.
3. Press the oil seal into the bore using the J 22836 for 85/a inch ring gear axles or the J 22388 for 9 1/2 inch ring gear axles.
Notice: Do not hammer the pinion flange onto the pinion shaft or component damage will occur.
4. Install the pinion flange yoke onto the pinion flange using the J 8614-01.
5. Place the washer and the pinion nut on the pinion threads.
6. Tighten the pinion nut to the position indicated by the alignment mark (1) made during disassembly.
Notice: Refer to Fastener Notice in Service Precautions.
7. Measure the rotating torque of the pinion.
^ Tighten the pinion nut to the required torque.
8. Fill the rear axle with lubricant. For proper fill procedure, refer to Lubricant Change. For lube capacity, refer to Lubrication Specifications.
9. Install the propeller shaft to the pinion flange. Refer to Propeller Shaft Replacement -One Piece or Propeller Shaft Replacement -Two Piece.
10. Remove the safety stands.
11. Lower the vehicle.