TSB : All Models (Except Corvette)

Details

NOTE: Check ring gear and pinion backlash and pinion bearing preload before disassembly. Following procedure is with axle shafts removed. On models with "O" type axles, remove cover and allow fluid to drain. On all models, mark differential bearing caps and housing for reassembly reference, then remove caps and pry differential from housing. Remove differential bearing cups and shims, marking for reassembly. Keep cups and shims with corresponding bearing caps. If necessary, use a suitable press to remove bearings from differential case. On "O" type axles, remove pinion shaft lock pin, pinion shaft, pinions, and side gears. If necessary, remove left hand thread drive gear bolts, then tap gear from case using a brass drift. Remove pinion nut, companion flange and washer, then remove pinion shaft and front bearing. If necessary, remove pinion bearing cups from housing using a brass drift. Press pinion shaft out of rear bearing and note thickness of pinion depth shim pack.