Starter Brush: Service and Repair

REPLACING CARBON BRUSHES

-Starter Disassembled-



Models 528e / 533i / 535i:






Lift spring 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 33.5mm (1.319").
Machine insulation between plates approx. 0.5 to 0.7mm (0.020 to 0.028") deep.

Check armature for shorted turns after repairing.

Model 524td

Fine grind and polish commutator on armature.
File or machine insulation between commutator plates 0.5 to 0.7mm (0.020 to 0.028") deep.
Check for shorted turns after repairing.






Push carbon brush holder to middle and lift off.






Installation:
Engage hooks of carbon brush holder fully.






Two carbon brushes have to be cut on the leads.
Solder in new carbon brushes.