Ring Gear: Service and Repair
Removal and Installation - Rear Axle Pinion Gear/Ring Gear/Tone Ring - 8 1/4 inchREMOVAL
CAUTION: The ring and pinion gears are serviced in a matched set. Never replace one gear without replacing the other matched gear.
1. Mark pinion yoke and propeller shaft for installation reference.
2. Remove propeller shaft from pinion yoke and tie propeller shaft to underbody.
3. Remove differential from axle housing.
4. Place differential case in a vise with soft metal jaw..
5. Remove bolts holding ring gear to differential case.
6. Drive ring gear from the differential case with a rawhide hammer.
7. Hold pinion yoke with Holder 6719A and remove pinion yoke nut and washer.
8. Remove pinion yoke from pinion shaft with Remover C-452.
9. Remove pinion from the housing.
10. Remove pinion shaft seal with a pry tool or slide-hammer mounted screw.
11. Remove oil slinger, if equipped, and front pinion bearing.
12. Remove front pinion bearing cup with Remover C-4345 and Handle C-4171.
13. Remove rear bearing cup from housing with Remover C-4307 and Handle C-4171.
14. Remove collapsible preload spacer.
15. Remove rear bearing from the pinion with Puller/Press C-293-PA and Adapters C-293-47.
16. Remove depth shims from the pinion shaft and record the shims thickness.
INSTALLATION
NOTE: A pinion depth shim/oil baffle is placed between the rear pinion bearing cone and pinion gear. If the ring and pinion gears are reused, the original pinion depth shim/oil baffle can be used. Select the proper shim thickness if ring and pinion gear are replaced.
1. Apply Mopar Door Ease or equivalent lubricant to outside surface of pinion bearing cups.
2. Install rear pinion bearing cup with Installer C-4308 and Handle C-4171 and verify cup is seated.
3. Install front pinion bearing cup with Installer D-130 and Handle C-4171 and verify cup is seated.
4. Install pinion front bearing and oil slinger, if equipped.
5. Apply a light coating of gear lubricant on the lip of pinion seal and install seal with Installer C-4076-B and Handle C-4735.
6. Place proper thickness depth shim on the pinion.
7. Install rear bearing and slinger if equipped, on the pinion shaft with Installer 6448 and a press.
8. Install a new collapsible preload spacer on pinion shaft and install pinion in housing.
9. Install pinion in housing.
10. Install yoke with Installer C-3718 and Yoke Holder 6719A.
11. Install yoke washer and a new nut on the pinion. The convex side of the washer must face outward.
12. Tighten the nut to 285 Nm (210 ft. lbs.).
Pinion/Yoke Nut 285 Nm (210 ft. lbs.)
CAUTION: Never loosen pinion nut to decrease pinion rotating torque and never exceed specified preload torque. If preload torque or rotating torque is exceeded a new collapsible spacer must be installed.
13. Holding the yoke with Holder 6719A slowly tighten the nut in 6.8 Nm (5 ft. lbs.) increments until the desired rotating torque is achieved. Measure the rotating torque frequently to avoid over crushing the spacer.
14. Check bearing rotating torque with an inch pound torque wrench.
The pinion gear rotating torque should be:
Original Bearings: 1 to 2 Nm (10 to 20 in. lbs.).
New Bearings: 1 to 5 Nm (10 to 30 in. lbs.).
15. Invert the differential case.
16. Install ring gear on the differential case and start two ring gear bolts. This will provide case-to-ring gear bolt hole alignment.
17. Invert the differential case in the vise.
18. Install new ring gear bolts and alternately tighten to 102 Nm (75 ft. lbs.).
Ring Gear Bolts 102 Nm (75 ft. lbs.)
CAUTION: Never reuse the ring gear bolts. The bolts can fracture causing extensive damage.
19. Install differential in axle housing and verify gear mesh refer to Adjustments (Gear Contact Pattern).
20. Install differential cover fill with gear lubricant.
21. Install the propeller shaft with reference marks aligned.
22. Install wheel and tire assemblies and lower the vehicle.