Starter Motor: Service and Repair

12 41 020 - Removing and installing/replacing starter motor (M54)





Necessary preliminary tasks:
- Switch off ignition
- Follow instructions for disconnecting and connecting battery Instructions for Disconnecting and Connecting Battery
Disconnect battery negative lead from battery
- E83 only: Remove pressure accumulator

Note:
Remove starter motor from below.





Unscrew nut (1).
Tightening torque 12 41 4AZ 12 41 Starter and Mounting Parts.
Disconnect battery positive lead (2) from starter motor.

Note:
For purposes of clarity, reinforcement plate is now shown.
Do not remove reinforcement plate.





Release screws (1).
Tightening torque 12 41 1AZ 12 41 Starter and Mounting Parts.
Pull starter motor out of transmission mount and turn in order to facilitate access to control leads on starter motor.





Unscrew nuts (1).
Tightening torque 12 41 4AZ 12 41 Starter and Mounting Parts.
Detach control leads (2) from starter motor.
Remove starter motor.





Installation:
Check starter pinion and starter ring gear for damage.