bmw Workshop Repair Guides

BMW 5 Series E34 Workshop Service and Repair Manuals - M21 Diesel Engine

7 RA Replacing Carbon Brushes (starter Motor With Countershaft) > < 5 RA Disassembling And Assembling Starting Motor_transmission Gear|Page 280
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Replacing carbon brushes

Note:

Starting motor removed and assembled

Lift springs and pull out carbon brushes.

Remove holder and pole housing.

Unsolder or cut off all carbon brushes.

When soldering in new carbon brushes, make sure that copper
leads are not hardened with flowing solder.

Check commutator for wear, fine-grinding if necessary.

Diameter must be at least 33.5 mm.

Machine insulation between plates approx. 0.5 to 0.7 mm.

RA  Replacing carbon brushes

BMW AG - TIS

19.01.2013  22:10

Issue status (12/2007) Valid only until next DVD is issued

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7 RA Replacing Carbon Brushes (starter Motor With Countershaft) > < 5 RA Disassembling And Assembling Starting Motor_transmission Gear|Page 280