Starter Motor: Service and Repair

Removing And Installing/Replacing Starter Motor (M54/M56)


Follow instructions for disconnecting and connecting battery.

Disconnect and cover battery negative terminal.

Remove reinforcement plate on front axle support, please refer to: Vehicle/ Body and Frame/ Frame/ Structural Brace/ Service and Repair Service and Repair

Important!
The section "Removing and Installing reinforcement plate on front axle support " contains important installation instructions.







If fitted:
Remove vacuum reservoir for exhaust flap.

Remove fuel line ( 2 ) from holders ( 1 ).







NOTE:
For a better overview, this work step is shown on an engine that has been removed.

Unlock plug ( 1 ) and detach from crankshaft pulse generator.







Loosen nut ( 1 ) and remove battery positive cable from starter.

Installation:










Release nuts ( 1 ).

Remove lines ( 2 ) from starter motor.







Loosen both starter motor mounting bolts ( 1 ) on transmission:

Release starter mounting bolts from transmission output end with a long extension and a universal joint.

Installation:
Tightening Torque:











Pull starter motor ( 1 ) from transmission flange and remove towards bottom.







Installation:
Check starter pinion and ring gear for damage.