12 32 501 Replacing controller switch for alternator (N62, N62TU)

Necessary Preliminary Tasks: 

• Notes on disconnecting and connecting battery. Refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
• Disconnect battery negative lead. Refer to 61 21 010 REMOVING AND INSTALLING BATTERY .
• Remove alternator. Refer to 12 31 020 REMOVING AND INSTALLING OR REPLACING ALTERNATOR (N62) .

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

Lever out cover (1) towards top.

Fig 1: Removing Cover Using Screwdriver

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Release contact screws (1).

Unscrew nut (2).

Remove controller switch (3).

Fig 2: Identifying Controller Switch

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

Fig 3: Locating Contact Surfaces Of Slip Rings

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

Install controller switch (2).

Fig 4: View Of Controller Switch Carbon Switches

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Insert and tighten down contact screws (1).

Insert nut (2) and tighten down.

Fig 5: Locating Contact Screws

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Assemble alternator.

Assemble engine.

Carry out alternator test with diagnostic system.