Brush holder inspection
1. Measure:
9 Brush length a
Out of specification → Replace.
2. Check:
9 Brush unit continuity
Out of specification → Replace.
8-26
Brush unit continuity:
Brush 1 - Brush 2 Continuity
Brush 3 - Brush 4 Continuity
Brush 1, 2 - Bracket 5 No continuity
Brush 3, 4 - Bracket 5 Continuity
Brush length limit:
6.4 mm (0.25 in)