Removal & Installation
- Before servicing the vehicle, refer to the Precautions Section.
- Remove both half shafts.
- Matchmark the front driveshaft and pinion companion flange for installation reference, if equipped.
- Remove the front driveshaft, if equipped
- Rotate the pinion gear three or four times and verify pinion rotates smoothly.
- Record the pinion rotating torque with an inch pound torque wrench, for installation reference.
- Position Holder 6719A or equivalent against the companion flange and install four bolts and washers into the threaded holes and tighten the bolts.
- Remove the pinion nut.
- Remove the companion flange with Puller C-452, or equivalent.
- Remove pinion seal with a seal pick.
- Apply a light coating of gear lubricant on the lip of pinion seal.
- Install seal with Installer C-3972-A and Handle C-4171, or equivalent,
- Install the companion flange onto the pinion with Installer C-3718 and Holder 6719A, or equivalent.
- Position holder against the companion flange and install four bolts and washers into the threaded holes. Tighten the bolt and washer so that the holder is held to the flange.
Install a new pinion nut onto the pinion shaft and tighten the pinion nut until there is zero bearing
NOTEDo not exceed the minimum tightening torque when installing the companion flange at this point. Damage to the collapsible spacer or bearings may result.
Tighten the nut to 200 ft. lbs. (271 Nm).
NOTENever loosen pinion nut to decrease pinion bearing rotating torque and never exceed specified preload torque. If preload torque or rotating torque is exceeded a new collapsible spacer must be installed.
- Record the pinion rotating torque using a torque wrench. The rotating torque should be equal to the reading recorded during removal plus 5 inch lbs. (0.56 Nm).
If the rotating torque is low, tighten the pinion nut in 5 ft. lbs. (6.8 Nm) increments until the proper
rotating torque is achieved.
NOTEIf the maximum tightening torque is reached prior to reaching the required rotating torque, the collapsible spacer may have been damaged. Replace the collapsible spacer.
- Install the driveshaft with the reference marks aligned.
- Install half shafts.