Brad's Car Manuals: A 3rd party mirror of CHARM + LEMON car manuals
Home >> Subaru >> 1989 >> Justy DL >> Repair and Diagnosis >> Electrical >> Starter >> Testing >> Bench Tests >> Commutator

Bench Tests: Commutator

Download the full database via torrent (~1.1 TB)  |  Download Brad's custom LEMON patches
  1. Clean surface and polish with No. 400 sandpaper if required. If surface is scored, out of round or pitted, turn commutator in a lathe.
  2. Standard commutator runout is .0020" (.050 mm) Maximum commutator runout is .004" (.10 mm).
  3. Commutator mica undercut depth should be .020-.031" (.50-.80 mm). Minimum mica undercut depth is .008" (.20 mm). If not within specification, undercut with a hacksaw blade to standard depth.
scientia non olet · About Brad's Car Manuals