Differential Case & Ring Gear - Conventional: Assembly
- Lubricate the differential side gear thrust washers and the differential side gear journals.
- Use SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL meeting Ford specification WSP-M2C197-A.
- Position the differential side gear thrust washers on the differential side gears.
- Position the differential side gear and thrust washer assemblies in the differential case (4204).
- Lubricate and assemble the differential pinion thrust washers and differential pinion gears.
- Use SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL meeting Ford specification WSP-M2C197-A.
- Engage the differential pinion gears opposite the differential side gears.
- Rotate the differential pinion gears to align with the differential pinion shaft bore.
- Insert the differential pinion shaft.
- Align the bolt hole in the differential pinion shaft with the bolt hole in the differential case.
- Install a new bolt finger-tight.
- Using the special tool, install the new differential bearings.
- Position the differential ring gear and the differential case. Align the bolt holes by starting two bolts through the holes in the differential case and the differential ring gear. Press the differential ring gear on the differential case.
- Install the bolts.
- Apply Stud and Bearing Mount EOAZ-19554-BA or equivalent meeting Ford specification WSK-M2G349-A1 to bolt threads.
- Install the differential assembly. For additional information, refer to DIFFERENTIAL CASE .
NOTE:
If a new bolt is unavailable, coat the threads with Threadlock® and Sealer E0AZ-19554-AA or equivalent meeting Ford specification WSK-M2G351-A5 prior to installation.









