BMW X5 Owners & Service Manuals

BMW X5: Starter With Mounting

REMOVING AND INSTALLING/REPLACING STARTER MOTOR (N52, N52K, N51, N53, N54)

IMPORTANT: Aluminum-magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminum screws/bolts exclusively.

Aluminum screws/bolts must be replaced each time they are released.

The end faces of aluminum screws/bolts are painted blue for the purposes of reliable identification.

Jointing torque and angle of rotation must be observed without fail (risk of damage).

Necessary preliminary tasks:

Unlock plug (1) and remove.

Unfasten nut.

Tightening torque 12 14 3AZ.

Remove battery positive lead (2).

Release screws (1).

Installation:

Replace aluminum screws.

Tightening torque 12 14 1AZ.

Release screws (2).

Replace aluminum screws.

Tightening torque 12 41 2AZ.

Remove starter motor (3).

Installation:

Check starter pinion and ring gear for damage, replace starter motor if necessary.

N53 only : In the case of a separate term. 50 lead (with disconnector socket), the term. 50 lead is laid parallel to knock sensor 2 behind the fuel line.

REPLACING SOLENOID SWITCH

Turn off ignition.

Remove starter motor.

Release nut (1).

Remove cable lug (2).

Starter With Mounting
Fig. 45: Identifying Cable Lug And Nut

CAUTION: Do not turn cable lug (2) while tightening down - risk of short circuit to starter motor housing.

Tighten to specified torque.

Release screws (1).

Starter With Mounting
Fig. 46: Identifying Screws

Remove solenoid switch (1) and spring (2).

Unhook pin (3).

Installation:

Check pin (3) for wear and apply grease.

Starter With Mounting
Fig. 47: Identifying Solenoid Switch And Spring

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