Band Apply Servo: Service and Repair

Remove Sealing Cap On Working Piston (A4S 310R)
Special Tools Required:
^ 241 351
^ 241 352
^ 241 353

Note: After completion of work, check transmission oil level.

Caution:
^ Use only the approved transmission fluid in this automatic transmission.
^ Failure to comply with this requirement will result in serious damage to the automatic transmission!

Recycling:
Catch and dispose of emerging transmission fluid.
Observe country-specific waste-disposal regulations.

Necessary preliminary tasks:
- Remove exhaust system.
- Remove heat shield.
- Release center bearing on propeller shaft.
- Carefully lower transmission at rear slightly.


Clean surface of snap ring.





Prepare special tool 241 351:
- Unscrew screw (1).
- Press up clamping bar (2) on screw (1).





Screw in special tool 241 351 partially.

Caution: Adapt special tool to transmission.

Tighten down screw (1).

Tension special tool at handles (2) (piston is pressed in slightly, strain is removed from snap ring).





Remove special tool.

Remove snap ring (1).





Screw in special tool 24 1 352 until it is firmly connected to sealing cap (1).





Remove sealing cap by screwing special tool 24 1 353 onto special tool 241 352.





Rub edge of new sealing cap with transmission fluid and install sealing cap (1) with special tool 24 1 351 .





Press in sealing cap (1) on screw (2) of special tool 241 351 until groove for snap ring (3) is exposed.

Remove special tool.

Insert snap ring in groove (3).

Caution: Make sure snap ring is correctly seated in groove.