Sealing Ring For Cardan Flange

Removing and installing sealing ring for cardan flange




Tools

Removal
1. Remove cardan shaft.
2. Place oil collection tray under the transmission.
3. Engage a gear and firmly set the hand brake.





4. Remove collar nut with a long a/f 30 socket wrench insert.





5. Pull off the cardan flange with a three-arm puller.





6. Remove sealing ring. To do this, use an angle drill to make a 3.5 mm dia. hole in the lowest non-rubberized surface "B". Screw in a large sheetmetal screw (4.8 x 25) with a large washer and lever out the sealing ring with two screwdrivers.

Installation
1. Remove drilling chips in the transmission neck.
2. Degrease the pinion shaft journal (splines and thread), halfshaft flange splines and thread of the collar nut with cleaning agent (e.g. Loctite quick cleaner).





3. Fill the space between the dust and sealing lips on the sealing ring with grease (e.g. Liqui - Moly) and drive in the sealing ring up to the mounting face using special tool 9639.
4. Coat halfshaft flange splines with screw locking lacquer (e.g. Loctite 243 or Omnifit 50 M) and fit the flange.
5. Coat contact surface and thread of the collar nut with screw locking lacquer (as in step 4).





6. Counter collar nut with 170 Nm (126 ft. lbs.), loosen again and tighten to 120 Nm (89 ft. lbs.).
7. Check transmission oil.