Differential Housing Cover: Installation

CAUTION: The machined surfaces on the differential housing and the differential housing cover must be clean and free of oil before applying the silicone sealant. Cover the inside of the rear axle (4001) prior to cleaning the machined surface to prevent contamination.

Clean the gasket mating surfaces.

CAUTION: Install the differential housing cover within 15 minutes of applying the silicone, or it will be necessary to apply new sealant.

Fig 1: Identifying Silicone Bead

Courtesy of FORD MOTOR CO.

Apply a continuous bead of sealant to the differential housing cover.
- Use Clear Silicone Rubber D6AZ-19562-AA or equivalent meeting Ford specification ESB-M4G92-A.

NOTE: If possible, allow one hour before filling the axle with lubricant to allow the silicone sealant to cure.

Fig 2: Tightening Differential Housing Cover Bolts

Courtesy of FORD MOTOR CO.

Install the differential housing cover.
1. Position the differential housing cover.
2. Install the bolts.

CAUTION: For Traction-Lok® axles, first fill the rear axle with 118 ml (4 oz) of Additive Friction Modifier C8AZ-19B546-A or equivalent meeting Ford specification EST-M2C118-A.

NOTE: Service refill capacities are determined by filling the rear axle with the specified lubricant to the level shown in the illustration.

Fig 3: Filling Rear Axle

Courtesy of FORD MOTOR CO.

Fill the rear axle with 1.8 liters (3.75 pints) of lubricant and install the fill plug.
- Use SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL or equivalent meeting Ford specification WSP-M2C197-A.

NOTE: If equipped with air suspension, reactivate the system.

Lower the vehicle.