Replacing Radial Shaft Seal For Output Flange (GS7S47BG SMG)

23 12 057 - Replacing radial shaft seal for output flange (GS7S47BG SMG)





Special tools required:
- 23 0 020 23 0 020 Holder
- 23 0 490 23 0 490 Extractor
- 23 1 210
- 23 4 110
- 31 2 106 31 2 100 Fixture





Important!
After completion of work, check transmission oil level Service and Repair.

Use only approved transmission oil.

Failure to comply with this instruction will result in serious damage to the transmission.





Necessary preliminary tasks:
- Remove propeller shaft Removing and Installing Complete Propeller Shaft (Constant-Velocity Joint).





Brace output flange with special tool 23 0 020 23 0 020 Holder.

Release collar nut with special tool 23 1 210.

Tightening torque 23 21 1AZ Transmission Shafts.

Important!
Do not drive on flange.

Secure bolt with Loctite 243.

- Loctite 243: BMW Parts Service.





Detach output flange (1) with special tool 31 2 106 31 2 100 Fixture and 3-claw extractor tool (2) from output shaft.





Drive a hole into radial shaft seal using a centre punch.

Important!
Do not use a drill as drillings may result in transmission malfunction.

Screw special tool 23 0 490 23 0 490 Extractor into radial shaft seal (1).

Drive out radial shaft seal (1) with impact weight (2).





Installation Note:
Coat sealing lips of new radial seal with gear oil.

Drive in radial seal as far as it will go with special tool 23 4 110 and plastic hammer.