Ford 9.75-Inch Ring Gear

Removal

1. WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the RH kick panel area. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.

Raise and support the vehicle.
2. Remove the wheel and tire assembly.
3. Remove the differential housing cover.
- Drain the lubricant.
4. Remove the brake calipers and discs.





5. Remove the differential pinion shaft.
1 Remove and discard the differential pinion shaft lock bolt.
2 Remove the differential pinion shaft.





6. CAUTION: Do not damage the rubber O-rings in the axle shaft grooves.

Remove the U-washers.
1 Push the axle shafts inboard.
2 Remove the U-washers.





7. CAUTION: Do not damage the wheel bearing oil seal.

Remove the two axle shafts.

Installation





1. Lubricate the lip of the wheel bearing oil seal.
- Use Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.





2. CAUTION: Do not damage the wheel bearing oil seal.

Install the two axle shafts.





3. CAUTION: Do not damage the rubber O-rings in the U-washer grooves.

Install the U-washers.
1 Position the two U-washers on the button ends of the axle shafts.
2 Pull the axle shafts outward.





4. Note: If a new pinion shaft lock bolt is unavailable, coat the threads with Threadlock and Sealer E0AZ-19554-AA or equivalent meeting Ford specification WSK-M2G351-A5 prior to installation.

Install the differential pinion shaft.
1 Align the hole in the differential pinion shaft with the case lock bolt hole.
2 Install a new differential pinion shaft lock bolt.
5. Install the brake discs.
6. Install the differential housing cover and fill the rear axle housing with the correct amount of specified lubricant.
7. Install the tire and wheel assembly.
8. Lower the vehicle.