BMW X3 Service & Repair Manual: Controller

REPLACING VOLTAGE REGULATOR

Necessary preliminary tasks:

  • Switch off ignition
  • Disconnect battery negative lead
  • Notes on removing and installing electronic control units.
  • Remove alternator

Bosch:

Release protective caps (1).

Electrical

Bosch:

Release screw (1) and nuts (2), remove cover.

Electrical

Bosch:

Release screws and remove regulator switch (1) in direction of arrow.

Electrical

Bosch:

Installation:

Clean contact surfaces and check pretension of contact spring, replace regulator switch if necessary.

Measurement A = min. 5 mm.

Check collector ring for wear and recondition if necessary.

Electrical

Valeo:

Slacken nut (1).

Slacken nut (2).

Release screws (3).

Release cover (4).

Electrical

Valeo:

Release screws.

Remove regulator switch (1) towards top.

Electrical

Valeo:

Installation:

Clean contact surfaces and check pretension of contact spring, replace regulator switch if necessary.

Measurement A = min. 5 mm.

Check collector ring for wear and recondition if necessary.

Electrical

Installation:

Fit new regulator (1) with attached mounting sleeve (2) or locked carbon brush.

Pull off mounting sleeve (2) and replace with cover (3).

Electrical

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