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

Follow instructions for disconnecting and connecting battery, refer to 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect battery negative lead from battery.

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

Fig 1: Disconnecting Plug From Crankshaft Pulse Generator

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

Release nut (1) and disconnect battery positive leads from starter motor.

Fig 2: Disconnecting Battery Positive Leads From Starter Motor

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Installation:

Release nuts (1).

Fig 3: Removing Starter Motor Lead Nuts

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Installation:

Detach leads (2) from starter motor.

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

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

Fig 4: Removing Starter Mounting Bolts

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Installation:

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

Fig 5: Removing Starter Motor

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Installation:

Check starter motor pinion and ring gear for damage.

Fig 6: Checking Starter Motor Pinion And Ring Gear

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