8.8-Inch Ring Gear

Removal
1. Raise and support the vehicle.

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

Remove the differential housing cover.





1 Remove the 10 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 installing 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 Silicone Rubber D6AZ-19562-AA or equivalent meeting Ford specifications ESB-M4G92-A and ESE-M4G195-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 one hour before filling with lubricant to make sure the silicone sealant has correctly cured.





Position the differential housing cover on the rear axle.
1 Install the differential housing cover.
2 Install the 10 differential housing cover bolts.

4. CAUTION: For Traction-Lok (R) axles, first rill the rear axle with 118 ml. (4 oz.) of specified Ford Friction Modifier.

Note: Service refill capacities are determined by filling the rear axle to the level shown.





Fill the rear axle with 2.4 liters (5.5 pints) of Motorcraft Synthetic Rear Axle Lubricant F1TZ-19580-B or equivalent meeting Ford specification WSL-M2C192-A and install the filler plug.
5. Lower the vehicle.