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. Position the rear stabilizer bar and rear axle tracking bar aside.





3. Note: Empty the lubricant into a clean container for reuse.

Remove the differential housing cover.
1 Remove the 12 differential housing cover bolts and drain the lubricant from the rear axle housing.
2 Remove the differential housing cover

Installation

1. CAUTION: Make sure the machined surfaces on both the rear axle housing and the differential housing cover are clean and free of oil before applying the new silicone sealant. The inside of the rear axle must be covered when cleaning the machined surface to prevent contamination.

Clean the gasket mating surface of the rear axle and the differential housing cover





2. Apply a new, continuous bead of sealant to the differential housing cover.
- Use Clear Silicone Rubber D6AZ-19562-AA or equivalent meeting Ford specification E1SB-M4G392-A.





3. Note: The differential housing cover must be installed within 15 minutes of application of the silicone, or new sealant must be applied. If possible, allow 1 hour before filling with lubricant to ensure the silicone sealant has properly cured.

Install the differential housing cover and tighten the differential housing cover bolts.





4. Note: Service refill capacities are determined by filling the rear axle with the specified lubricant to the specified level below the bottom of the filler hole.

Fill the rear axle with specified lubricant, and install the filler plug.
- For Traction-lok axles, first fill the rear axle with 118 ml (4 ounces) of specified Ford Additive Friction Modifier C8AZ-19B546-A or equivalent meeting Ford specification EST-M2C118-A.
5. Lower the vehicle.