Bench Testing: Commutator
Inspect commutator segments for roughness, grooves, burns or pitting. If necessary, sand lightly with 500-600 grit crocus cloth. Check commutator for out-of-round and for proper mica insulators undercut depth.
Inspect commutator segments for roughness, grooves, burns or pitting. If necessary, sand lightly with 500-600 grit crocus cloth. Check commutator for out-of-round and for proper mica insulators undercut depth.