Installation

INSTALLATION





NOTE: The ring gear and pinion are serviced in a matched set. Never replace one gear without replacing the other. If ring and pinion gears or bearings are replaced, Refer to Adjustments for Pinion Gear Depth Setting.

1. Apply Mopar Door Ease or equivalent lubricant to outside surface of the bearing cups.
2. Install rear pinion bearing cup with Installer D-145 (1) and Handle C-4171 (2).




3. Install front pinion bearing cup with Installer D-129 (1) and Handle C-4171 (2).




4. Install pinion front bearing and oil slinger if equipped.
5. Apply a light coating of gear lubricant on the lip of pinion seal.
6. Install pinion seal with an Installer C-3972-A (2) and handle (1).




7. Place proper thickness depth shim (1) on pinion (2).




8. Install rear bearing (1) on pinion with Installer 6448A (2) and a press (1).




9. Install new collapsible preload spacer (1) onto the pinion.




10. Install pinion gear into housing.
11. Install companion flange with Installer C-3718.
12. Install new pinion nut and tighten to 271 Nm (200 ft. lbs.).




13. Measure pinion torque to rotate (1) with an inch pound torque wrench (2). Check pinion torque to rotating frequently to avoid over-crushing the collapsible spacer.
Pinion Torque To Rotate is:

- Original Bearings: 1 - 2.25 Nm (10 - 20 in. lbs.)
- New Bearings: 1.7 - 2.5 Nm (15 - 22 in. lbs.)
With torque wrench set at 474 Nm (350 ft. lbs.) slowly tighten the pinion nut in 6.8 Nm (5 ft. lbs.) increments until pinion torque to rotate is achieved.

CAUTION: Never loosen pinion nut to decrease pinion bearing rotating torque. If pinion torque to rotating or maximum tightening torque 474 Nm (350 ft. lbs.) is exceeded a new collapsible spacer must be installed. Failure to follow these instruction will result in damage to the axle.





14. Invert differential case and start two ring gear bolts. This will provide case-to-ring gear bolt hole alignment.
15. Invert differential case in the vise.
16. Install new ring gear bolts (2) and alternately tighten to 108 Nm (80 ft. lbs.).

CAUTION: Never reuse the ring gear bolts. Failure to follow these instructions will damage bolts.

17. Install differential in axle housing and verify gear mesh, contact pattern and backlash.
18. Install differential cover.