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Differential Case Assembly

  1. Remove axle shafts. See AXLE SHAFT & BEARING  under REMOVAL & INSTALLATION. Check ring and pinion gear backlash and pinion bearing preload. This will indicate gear or bearing wear, or an error in backlash or preload setting. Remove speed sensor (if equipped).
  2. Mark differential bearing caps and housing for reassembly reference. Remove caps and differential case from housing. Remove bearing cups and shims. Keep each shim set with proper bearing cap for reassembly. On Fleetwood 9 1/2" ring gear, remove side bearing adjusting nut.
  3. Remove differential pinion shaft, gears, and side gears with thrust washers. See Figure. Keep components in order for reassembly. Remove ring gear bolts (left-hand threads). Tap ring gear off differential case using soft drift and hammer.
  4. If necessary, remove speed sensor ring (if equipped). Remove nut and companion flange. COMPANION FLANGE & OIL SEAL  under REMOVAL & INSTALLATION. Remove drive pinion and front bearing. If necessary, remove pinion bearing cups from housing using a brass drift. Press drive pinion out of rear bearing and note thickness of pinion depth shim pack.
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