Bevel Gear Seal Rings, Replacing

Bevel gear seal rings, replacing
Special tools: 999 5654, 999 7178, 999 7191

Note: As the illustrations in this service information are used for different model years and/or models, some variation may occur. However, the essential information is always correct.

Preparatory work
Method contents
This method consists of two different methods:
- Drive shaft seal ring, front right side, replacing
- Seal ring for crown wheel shaft of bevel gear, replacing

Removing the drive shaft
Remove the drive shaft according to: Axle Shaft Assembly; Service and Repair.

Drive shaft seal ring, front right side, replacing
Removing the seal ring





Detach the seal ring from the crown wheel shaft. Use a screwdriver/jimmy bar.

Installing the seal ring
Install the new drive shaft seal ring.
Lubricate the seal with wheel bearing grease. Use 999 5654. Tap the ring in to the stop.





Note: If the crown wheel shaft seal is be replaced as well, see Seal ring for crown wheel shaft of bevel gear, replacing.

Seal ring for crown wheel shaft of bevel gear, replacing
Marking the position of the set nut





Mark the position of the set nut in relation to the housing with a chalk line.
Measure and note the height between the nut and the housing. Remove the screw and catch of the nut.

Removing the set nut





Remove the set nut using 999 7178.

Removing the seal ring





Tap out the seal ring.
Use a screwdriver.

Installing the seal ring





Install the set nut seal ring.
Lubricate the seal lip with wheel bearing grease.
Use 999 7191. Tap in the seal until the face of the drift touches the nut.
Insert a new O-ring on the nut. Lubricate the O-ring and threads with wheel bearing grease.

Installing the set nut





Install the set nut.
Use 999 7178. Turn the propeller shaft while the nut is tightened to the position measured previously.

Checking the marking
Check that the markings align exactly.
Check the height following Marking the position of the set nut. Install the catch. Tighten the screw following Tightening torque. Check the oil level in the bevel gear following Bevel gear oil level, check





Note: For drive shaft installation, see Axle Shaft Assembly; Service and Repair.