Ring Gear: Service and Repair
PINION GEAR/RING GEARREMOVAL
NOTE: The ring and pinion gears are serviced as a matched set. Never replace one gear without replacing the other gear.
1. Mark pinion yoke and propeller shaft for installation reference.
2. Disconnect propeller shaft from pinion yoke and tie propeller shaft to underbody
3. Remove differential from the housing.
4. Secure differential case in a vise with soft metal jaw.
5. Remove ring gear bolts from the differential case.
6. Drive ring gear off the differential case with a dead-blow hammer (Fig. 52).
7. Hold yoke with Holder 6719A and remove pinion nut and washer.
8. Remove pinion yoke from the pinion shaft with Puller C-452 and Flange Wrench C-3281 (Fig. 53).
9. Remove pinion gear and preload shims from housing (Fig. 54).
10. Remove pinion seal with a pry bar or slide hammer mounted screw.
11. Remove front pinion bearing cup with Remover D-147 and Handle C-4171 (Fig. 55).
12. Remove rear bearing cup (Fig. 56) with Remover D-148 and Handle C-4171.
13. Remove rear pinion bearing with Puller C-293-PA and Adapters C-293-39 (Fig. 57).
14. Remove pinion depth shim/oil slinger from pinion shaft and record thickness.
INSTALLATION
NOTE: Pinion depth shims are placed between the rear pinion bearing cone and pinion gear to achieve proper ring and pinion gear mesh. If ring and pinion gears are reused, the original pinion depth shim can be used. Refer to Adjustments (Pinion Gear Depth) to select the proper shim thickness if ring and pinion gears are replaced.
1. Apply Mopar Door Ease stick or equivalent lubricant to outside surface of bearing cups.
2. Install rear pinion bearing cup with Installer D-148 and Handle C-4171 (Fig. 58) and verify cup is seated.
3. Install front pinion bearing cup with Installer D-144 and Handle C-4171 (Fig. 59) and verify cup is seated.
4. Install pinion front bearing, oil slinger. Apply a light coating of gear lubricant on the lip of pinion seal.
5. Install pinion seal with an appropriate installer (Fig. 60).
6. Install proper thickness depth shim on the pinion gear.
7. Install rear bearing and oil slinger, if equipped on pinion gear with Installer W-262 (Fig. 61).
8. Install pinion gear in housing.
9. Install pinion preload shims (Fig. 62)
10. Install yoke with Installer W-162-D and Yoke Holder 6719A (Fig. 63).
11. Install yoke washer and a new nut on the pinion gear. Tighten the nut to specification (Fig. 64).
12. Check bearing preload torque with an inch pound torque wrench (Fig. 65). The torque to rotate the pinion gear should be:
- Original Bearings: 1 to 2 Nm (10 to 20 in. lbs.).
- New Bearings: 2.3 to 4.5 Nm (20 to 40 in. lbs.).
13. Invert differential case in a vise and start two ring gear bolts. This will provide case-to-ring gear bolt hole alignment.
14. Install new ring gear bolts and alternately tighten to 136 Nm (100 ft. lbs.). (Fig. 66).
CAUTION: Never reuse the ring gear bolts. The bolts can fracture causing extensive damage.
15. Install differential in axle housing and verify gear mesh and contact pattern. Refer to Adjustments (Gear Contact Pattern).
16. Install differential cover and fill with lubricant.
17. Install propeller shaft with reference marks aligned.