Removal and Replacement

24 34 564 Replacing Mechatronics (GA8HP45Z)

Special tools required:







IMPORTANT:
- Do not let skin come in contact with transmission oil and do not inhale the fuel vapours.
- Wear protective gloves.
- Ensure adequate ventilation.







NOTE:
After completing repair work:
- Load specific data status with ISTA.







IMPORTANT:
After completion of repair work, check transmission oil level.
Use only approved gearbox oil.
Failure to comply with this requirement will result in serious damage to the automatic transmission.







IMPORTANT: Read and comply with notes on protection against damage from electrostatic discharge (ESP protection).







Necessary preliminary tasks:
- Remove rear underbody protection.
- Remove exhaust bracket.







Remove panels (2).







IMPORTANT: Cable assembly is discontinued after 04/2010.

Release screw (2).
Disconnect cable (1).

Installation note:
Adjusting cable:
- Release screw (2).
- Bring release lever (3) into contact with selector shaft by pressing slightly. Distance B=0 mm.
- Adjust cable (1) by means of holder until distance A ≥ 1 mm is obtained.
- Tighten down screw (2)







IMPORTANT: Mechatronics can be destroyed by static discharges. Therefore the contacts inside the connector must not be touched. Insert special tool immediately after operation.

Unscrew connector (1) and disconnect.







Insert special tool 24 2 390 in sealing cup (1).







Remove transmission oil sump.







Release screw (1) and unlock sealing cup with slide (2).
Tightening torque 24 30 4AZ.







Note position of sealing cup.
Pull out sealing cup (1).

Installation note:
Fit sealing cup in position (lug on inside). Turn until lug engages in groove of transmission. Slide in sealing cup.

Lug on sealing sleeve must not be damaged.







Release all screws (1 and 2).
- 1 = M6x 59 mm
- 2 = M6 x 20 mm

Remove mechatronics.

Installation note:
Replace O-rings for oil ducts on the mechatronics unit and wet with automatic transmission fluid.







Installation note:
Check gasket (1) for damage.
Replace the gasket (1) if necessary.
Coat new seal with automatic transmission fluid and install.







Screw in guide pins 24 1 430 at screw position 4 and 9.







Fit mechatronics unit.
Fit shift claw (2) in gearshift shaft (3) by pressing release lever (1).







Screw down wing nuts as far as they will go on to the mechatronics unit.







Installation note:
Insert screws until screw heads make contact.
Remove guide pins and fit remaining screws.

IMPORTANT:
Tighten down screws in order 1...18.
Failure to comply with this requirement will result in serious damage to the automatic transmission.
Tightening torque 24 30 4AZ.