October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Brush & Spring Specifications: Commutator
- Inspect commutator for roughness, grooves, burns or pitting. Sand lightly with 500 grit sandpaper if necessary. Check commutator for out-of-round and mica insulators undercut to a depth of .020-.031" (.5-.8 mm).
- If necessary, commutator may be turned less than .04" (1 mm) from original size and mica undercut. Replace if excessively worn.