Rear Axle - 8 1/4: Seal-Pinion: Installation

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: PINION SEAL INSTALLER

Courtesy of DAIMLERCHRYSLER CORP.

1 - HANDLE

2 - DIFFERENTIAL HOUSING

3 - INSTALLER

Apply a light coating of gear lubricant on the lip of pinion seal.

Install new pinion seal with Installer C-4076-B (3) and Handle C-4735 (1). See Fig 1.

Fig 2: TIGHTENING PINION NUT

Courtesy of DAIMLERCHRYSLER CORP.

1 - DIFFERENTIAL HOUSING

2 - COMPANION FLANGE HOLDER

3 - TORQUE WRENCH

Install companion flange on the end of the shaft with the reference marks aligned.
Install bolts into two of the threaded holes in the companion flange 180° apart.
Position Holder 6719 against the companion flange and install a bolt and washer into one of the remaining threaded holes. Tighten the bolts so Holder 6719 is held to the flange.
Install companion flange on pinion shaft with Installer C-3718 and Holder 6719.
Install the pinion washer and a new pinion nut. The convex side of the washer must face outward.
CAUTION: Do not exceed the minimum tightening torque when installing the companion flange retaining nut at this point. Failure to heed caution may result in damage.
Hold companion flange with Holder 6719 (2) and with a torque wrench (3) tighten pinion nut to 285 N.m (210 ft. lbs.). See Fig 2. Rotate pinion several revolutions to ensure the bearing rollers are seated.

Fig 3: PINION ROTATION TORQUE
Courtesy of DAIMLERCHRYSLER CORP.

1 - COMPANION FLANGE

2 - INCH POUND TORQUE WRENCH
Rotate pinion (1) with an inch pound torque wrench (2). See Fig 3. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 N.m (5 in. lbs.).
CAUTION: Never loosen pinion nut to decrease pinion bearing rotating torque and never exceed specified preload torque. Failure to follow these instructions will result in damage.

If rotating torque is low use Holder 6719 to hold the companion flange and tighten pinion nut in 6.8 N.m (5 ft. lbs.) increments until proper rotating torque is achieved.

NOTE: The seal replacement is unacceptable if final pinion nut torque is less than 285 N.m (210 ft. lbs.).

NOTE: The bearing rotating torque should be constant during a complete revolution of the pinion. If the rotating torque varies, this indicates a binding condition.

Fig 4: COMPANION FLANGE

Courtesy of DAIMLERCHRYSLER CORP.

1 - PROPELLER SHAFT

2 - PINION COMPANION FLANGE

3 - REFERENCE MARK

4 - PROPELLER SHAFT COMPANION FLANGE

Install propeller shaft (1) with installation reference marks (3) aligned. See Fig 4.
Tighten companion flange bolts to 115 N.m (85 ft. lbs.).
Install rear brake components.