Differential Housing Cover: Installation

CAUTION: Make sure the machined surfaces on both the differential housing and the differential housing cover are clean and free of oil before applying the new silicone sealant. To prevent contamination, cover the inside of the rear axle (4001) prior to cleaning the machined surface.

Clean the differential housing and the differential housing cover gasket mating surfaces.

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

Apply a continuous bead of sealant of the specified thickness to the differential housing cover.
- Use Clear Silicone Rubber D6AZ-19562-AA or equivalent meeting Ford specifications ESBM4G92-A.
  
  Fig 1: Applying Continuous Bead Of Sealant To Differential Housing Cover
  Courtesy of FORD MOTOR CO.

NOTE: If possible, allow one hour before filling the axle with lubricant to make sure the silicone sealant has cured.

Install the differential housing cover.
1. Install the differential housing cover.
2. Install the 10 bolts.
  
  Fig 2: Installing Differential Housing Cover
  Courtesy of FORD MOTOR CO.

NOTE: If it is necessary to refill a Traction-Lok® axle with new lubricant, add 118 ml (4 oz) of Additive Friction Modifier C8AZ-19B546-A or equivalent meeting Ford specification EST-M2C118-A before filling the axle with the new lubricant.

NOTE: In-vehicle repair refill capacities are determined by filling the rear axle with the specified lubricant to 6.4-14.3-mm (1/4-9/16-in) below the bottom of the fill hole.

Fill the rear axle to the level shown, approximately 1.66-1.77-liters (3.5-3.75-pints) of lubricant, and install the filler plug.
- Use SAE 75W-140 High Performance Rear Axle Lubricant F1TZ-19580-B or equivalent meeting Ford specification WSL-M2C192-A.
  
  Fig 3: Identifying Rear Axle Required Fluid Level
  Courtesy of FORD MOTOR CO.
Lower the vehicle.