12 41 020 Removing and installing/replacing starter motor (Z3 / M54)

WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. However, it is still accessible from the selected car via links, so may be relevant.

Observe instructions for disconnecting and connecting battery. Refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect battery negative lead from battery.

Perform following tasks from above:

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

Fig 1: Disconnecting Battery Positive Leads From Starter Motor

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Installation:

Tightening torque, 12 41 4AZ. Refer to 12 41 STARTER AND MOUNTING PARTS .

Release nuts (1).

Installation:

Tightening torque, 12 41 4AZ. Refer to 12 41 STARTER AND MOUNTING PARTS .

Fig 2: Detaching Leads From Starter Motor

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Detach leads (2) from starter motor.

Detach cable duct (1) of B+ lead from firewall.

Fig 3: Detaching Cable Duct Of B+ Lead From Firewall

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NOTE: Detach heater valve from bracket in order to improve accessibility for torque tool (2).

Release starter motor screw (2) from upper vehicle side of transmission.

Fig 4: Releasing Starter Motor Screw From Upper Vehicle Side Of Transmission

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Tightening torque, 12 41 1AZ. Refer to 12 41 STARTER AND MOUNTING PARTS .

Starter motor screw (1) is accessible from lower vehicle side. Working from transmission output end, release starter motor screw (1) with a long extension and a universal joint.

Tightening torque, 12 41 1AZ. Refer to 12 41 STARTER AND MOUNTING PARTS .

Lift out starter motor.

Installation:

Check starter motor pinion and ring gear for damage.

Fig 5: Checking Starter Motor Pinion And Ring Gear For Damage

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