BMW X5: Regulator

REPLACING CONTROLLER SWITCH FOR ALTERNATOR (N62, N62TU)

Necessary preliminary tasks:

• Disconnect battery negative lead
• Remove ALTERNATOR

Carefully insert a screwdriver between cover (1) and threaded pin.

Lever out cover (1) towards top.

Fig. 48: Inserting Screwdriver Between Cover And Threaded Pin

Release contact screws (1).

Slacken nut (2).

Remove controller switch (3).

Fig. 49: Identifying Contact Screws, Nut And Controller Switch

Check contact surfaces (1) of slip rings for wear and recondition if necessary.

Fig. 50: Identifying Contact Surfaces

Press in carbon brushes (1) of controller switch (2) in direction of arrow.

Install controller switch (2).

Fig. 51: Pressing Carbon Brushes Of Controller Switch

Insert and tighten down contact screws (1).

Insert nut (2) and tighten down.

Fig. 52: Identifying Contact Screws And Nut

Assemble alternator.

Carry out alternator test with diagnostic system.

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).

Fig. 53: Identifying Protective Caps

Bosch:

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

Fig. 54: Identifying Cover Screw And Nuts

Bosch:

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

Fig. 55: Removing Regulator Switch

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.

Fig. 56: Identifying Pretension Of Contact Spring

Valeo:

Slacken nut (1).

Slacken nut (2).

Release screws (3).

Release cover (4).

Fig. 57: Identifying Cover, Nuts And Screws

Valeo:

Release screws.

Remove regulator switch (1) towards top.

Fig. 58: Locating Regulator Switch Screws

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.

Fig. 59: Identifying Pretension Of Contact Spring

Installation:

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

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

Fig. 60: Identifying Regulator, Mounting Sleeve And Cover

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