A typical dynamo- paul-ryan.info Spring-loaded brushholders are placedone on each side of thecommutator. Commutator Armature Pivot bolt Adjuster strapbolt

The electrical connections from a dynamo are on the rear endplate. Current generated in the armature is passed through the commutator to spring-loaded brushes and thence to terminals on the endplate.

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How to fix a dynamo

Wear on the carbon brushes and commutator is the most common cause of dynamo failure. Normally t...