Rear Axle - 286RBI

Rear Axle - 286RBI / PINION GEAR/RING GEAR/ TONE RING
REMOVAL

NOTE: The ring and pinion gears are service as a matched set. Never replace the ring gear without replacing the matched pinion gear.

1. Remove differential from the housing.





2. Place differential case in a vise with soft metal jaw protectors. (Fig. 43)
3. Remove the ring gear bolts.
4. Drive ring gear from differential case with a soft hammer (Fig. 43).
5. Remove the exciter ring from the differential case by tapping it off with a brass drift.
6. Hold the pinion yoke with Holder 6719A and remove pinion yoke nut and washer.





7. Remove pinion yoke with Remover C-452 and Wrench C-3281 (Fig. 44).





8. Remove pinion gear from housing (Fig. 45).
9. Remove pinion seal with a slide hammer or pry bar.
10. Remove oil slinger, if equipped, and the front pinion bearing.





11. Remove front pinion bearing cup with Remover C-4307 and Handle C-4171 (Fig. 46).





12. Remove rear bearing cup with Remover D-159 and Handle C-4171 (Fig. 47).
13. Remove pinion depth shims under rear bearing cup in the housing bore.





14. Remove rear bearing from the pinion with Puller/Press C-293-PA and Adapters DD-914-95 (Fig. 48).

INSTALLATION
1. Apply Mopar Door Ease stick lubricant or equivalent to outside surface of bearing cups.





2. Install proper thickness pinion depth shims in the housing bore and install rear pinion bearing cup with Installer C-4204 and Handle C-4171 (Fig. 49) and verify cup is seated.





3. Install pinion front bearing cup with Installer C-4308 and Handle C-4171 (Fig. 50) and verify cup is seated.
4. Install pinion front bearing and oil slinger, if equipped. Apply a light coating of gear lubricant on the lip of pinion seal.





5. Install new pinion seal with an appropriate installer (Fig. 51).

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 pinion depth shim should not require replacement or adjustment. If the ring and pinion gears are replaced refer to Adjustments to select the proper thickness shim.





6. Install rear bearing on the pinion gear with Installer D-389 and a press (Fig. 52).
7. Install original solid shims on pinion gears.





8. Install yoke with Installer C-37 18 and Yoke Holder 6719A (Fig. 53).
9. Install yoke washer and new nut on the pinion gear. Tighten the nut to 637 Nm (470 ft. lbs.).





10. Check bearing rotating torque with an inch pound torque wrench (Fig. 54). Pinion rotating torque should be:
Original Bearings: 1 to 3 Nm (10 to 20 inch lbs.).
New Bearings: 2.8 to 5.1 Nm (25 to 45 inch lbs.).
11. If rotating torque is less than the desired rotating torque, remove the pinion yoke and decrease the thickness of the solid shim pack if greater increase shim pack. Changing the shim pack thickness by 0.025 mm (0.001 inch) will change the rotating torque approximately 0.9 Nm (8 inch lbs.).
12. Invert the differential case.
13. Position exciter ring on differential case and tap onto the case with a brass drift slowly and evenly.
14. Invert differential case and start two ring gear bolts. This will provide case-to-ring gear bolt hole alignment.
15. Invert the differential case in the vise.





16. Install new ring gear bolts and alternately tighten to 298 Nm (220 ft. lbs.) (Fig. 55).

CAUTION: Never reuse the ring gear bolts. The bolts can fracture causing extensive damage.

17. Install differential in housing and verify gear mesh and contact pattern.