Bench Testing: Commutator
WARNING: This page is about a different car, the 2004 Nissan Sentra and 2003 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Inspect commutator for roughness, grooves, burns, pitting and out-of-round. If necessary, sand lightly with 500-600 grit sandpaper. If mica insulator undercut is less than .008 in. (.20 mm), undercut to .020-.031 in. (.50-.80 mm). Replace armature if commutator diameter is less than specified. See STARTER SPECIFICATIONS .