Disassembly
Fig. 1 Disassembled view of rear drive axle:
Fig. 2 Disassembled view of front drive axle:
Fig. 3 Removing differential gear case:
CONVENTIONAL DIFFERENTIAL
Gear Assembly
1. Remove lock plate, then remove side bearing nut using tool No. MB990201.
2. Remove the bearing cap (carrier cap), using the wooden handle of a hammer so the gears and other parts will not be damaged, remove the gear case assembly.
Fig. 4 Removing side bearings:
3. Using puller C-293-P and adapter C-293-39 for A-type differential or MB990723 for B type, pull off differential side bearing. On A type, right and left bearings and shims should be marked for identification for reassembly.
4. Pry up the ring gear retaining bolt locking washers and loosen the bolts in a diagonal sequence, then remove ring gear.
5. Drive out the pinion shaft knock pin from the ring gear, using a long punch, then pull out the pinion shaft, and the pinion and the side gears with the spacers. The removed side gears and spacers, right and left, should be kept separate for identification during reassembly.
LIMITED SLIP DIFFERENTIAL
Gear Assembly
Fig. 5 Exploded view of limited slip differential, Pickups:
1. Remove case from gear carrier, as described under conventional differential.
Fig. 6 Side bearing removal:
2. Remove side bearing using tool Nos. C-293-pa, C-4570 and MB990723, ensuring to keep adjusting spacers separate to facilitate reassembly.
3. Mark relative position between differential case and drive gear, then loosen and remove drive gear mounting bolts in a diagonal sequence.
4. Evenly loosen A & B differential case attaching bolts, then separate the two halves and remove components from case B. Separate right and left thrust washers, spring plates, spring discs, friction plates and friction discs to facilitate assembly.
Drive Pinion
1. Hold the end yoke with the end yoke holder (Special Tool C-3281) and remove the locknut and the end yoke.
2. Tap the drive pinion shaft end with a mallet and force out the drive pinion with the adjusting shim, drive pinion bearing (rear) inner race, drive pinion spacer and the preload adjusting shim still installed on the drive pinion shaft.
Fig. 7 Removing rear drive pinion bearing:
3. Using puller C-293-P and adapter C-293-39 for A type differential or MB990723 for B-type differential, remove rear bearing inner race from the drive pinion shaft. Remove the drive pinion height adjusting shim. The drive pinion height adjusting shim should be kept for reassembly.
4. Remove the drive pinion bearing (front) outer race and oil seal using a suitable drift. Discard oil seal.
5. Remove the drive pinion rear bearing outer race by the same manner as the removal of front race, using a suitable drift.