SEAL-PINION
REMOVAL
1. With vehicle in neutral, position vehicle on hoist.
2. Mark a reference line (3) across the axle companion flange (2) and propeller shaft flange yoke (4).
3. Remove companion flange bolts and remove propeller shaft
4. Remove wheel and tire assemblies.
5. Remove brake calipers and rotors to prevent any drag.
6. Rotate companion flange three or four times and verify flange rotates smoothly.
7. Record pinion torque to rotate (1) with a inch pound torque wrench (2).
8. Install bolts into two of the threaded holes in the companion flange 180 degrees apart.
9. Position Holder 6719A against the companion flange and install a bolt and washer into one of the remaining threaded holes. Tighten bolts so Holder 6719A is held to the flange.
10. Remove the pinion nut and washer.
11. Mark flange (1) and pinion shaft for install reference.
12. Remove companion flange (1) with Puller C-452 (2).
13. Remove pinion seal with a seal puller.
INSTALLATION
1. Apply a light coating of gear lubricant on the lip of pinion seal.
2. Install new pinion seal with Installer C-4076-B (3) and Handle C-4735 (1).
3. Position flange on pinion shaft with the reference marks aligned.
4. Install bolts into two of the threaded holes in the companion flange 180 degrees apart.
5. Position Holder 6719A (2) against the companion flange and install a bolt and washer into one of the remaining threaded holes. Tighten bolts so Holder 6719A is held to the flange.
6. Install flange with Installer C-3718 and Holder 6719A.
7. Install 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.
8. Hold companion flange with Holder 6719A (2) and with a torque wrench (3) tighten pinion nut to 285 N·m (210 ft. lbs.). Rotate pinion several revolutions to ensure the bearing rollers are seated.
9. Rotate pinion (1) with an inch pound torque wrench (2). Pinion torque to rotate should be equal to recorded reading plus an additional 0.56 N·m (5 in. lbs.).
CAUTION: Never loosen pinion nut to decrease pinion bearing rotating torque and never exceed specifications. If rotating torque is exceeded, a new collapsible spacer must be installed. Failure to follow these instructions can damage the collapsible spacer or bearings.
10. If torque to rotate is low tighten pinion nut in 6.8 N·m (5 ft. lbs.) increments until pinion torque to rotating 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.
11. Install propeller shaft (1) with installation reference marks (3) aligned.
12. Install rear brake components.