Seal - Pinion

SEAL-PINION

REMOVAL
1. With vehicle in neutral, position it on a hoist.





2. Mark a installation reference line (3) across the pinion flange (3) and propeller shaft flange (4).
3. Remove propeller shaft.
4. Remove brake calipers and rotors to prevent any drag.
5. Rotate pinion flange three or four times and verify flange rotates smoothly.





6. Measure rotating torque of the pinion with a inch pound torque wrench (2) and record reading.
7. Install two bolts into the pinion flange threaded holes 180° apart. Position Holder 6719A against the flange and install and tighten two bolts and washers into the remaining holes.
8. Hold the flange with Holder 6719A and remove pinion nut and washer.





9. Remove companion flange (1) with Remover C-452 (2).
10. Remove pinion seal with pry tool or slide-hammer mounted screw.

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. Install pinion flange on pinion shaft with Installer C-37 1 8.
4. Install two bolts into the threaded holes in the flange, 180° apart.
5. Position Holder 6719 against the flange and install a bolt and washer into one of the remaining threaded holes. Tighten the bolts so holder is held to the flange.
6. Install pinion washer and a new pinion nut. The convex side of the washer must face outward.

CAUTION: Never exceed the minimum tightening torque 285 Nm (210 ft. lbs.) when installing the companion flange retaining nut at this point. Failure to follow these instruction will result in damage to collapsible spacer or bearings.





7. Hold companion flange with Holder 6719 (2) and tighten pinion nut with a torque set to 285 Nm (210 ft. lbs.). Rotate pinion several revolutions to ensure the bearing rollers are seated.





8. Rotate pinion with an inch pound torque wrench (2). Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.).

CAUTION: Never loosen pinion nut to decrease pinion bearing rotating torque and never exceed specified preload torque. If rotating torque is exceeded, a new collapsible spacer must be installed. Failure to follow these instructions will result in damage to the collapsible spacer

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

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.

Note: The seal replacement is unacceptable if the final pinion nut torque is less than 285 Nm (210 ft. lbs.).

10. Install propeller shaft.