Differential Case and Ring Gear - Model 70, Limited Slip: Disassembly
WARNING: This page is about a different car, the 2003 Ford RV Cutaway, 2003 Ford Econoline, 2003 Ford E550 Super Duty, 2003 Ford E450 Super Duty, and 2003 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When refilling the axle with lubricant, first add 0.163 L (5.5 ounces) of friction modifier.
- Match-mark the differential case.
- Match-mark the differential case flange (ring gear) and button (cover) halves.
- Match-mark the differential pinion shafts and corresponding ramps.
- If necessary, remove the differential ring gear.
- Loosen, but do not remove the bolts.
- Place the differential assembly on a bench.
- Remove the bolts and the button half of the differential case.
- Remove the differential side gear, side gear ring, rear axle disc and plate kit, differential pinion gears, and the differential pinion shafts. Keep these parts in order for correct installation by placing them aside with the button half of the differential case.
- Remove the side gear ring and the rear axle disc and plate kit from the flange half of the differential case. Keep these parts in order by placing them on the pinion flange as shown.
- Inspect the following components:
- The clutch plates and clutch discs for cracks, excessive wear, and distortion. Always install an entirely new rear axle disc and plate kit on both sides if discarding one or more of the clutch plates or clutch discs.
- The differential pinion shafts and the ramp surfaces on the differential case for excessive wear or pitting.
- The differential side gear and differential pinion gear teeth.
- The differential side gear races that bear on the differential side gear rings.
NOTE:
An axle shaft held in a vise, with the shaft splines extending not more than three inches above the vise jaws, makes an excellent holding fixture for the differential case.