Brush and Brush Holder
Check each brush for wear by measuring its length as shown. If brush is found worn down to service limit, replace brush.
Exposed brush length "a" for 105A type
Standard: 10.5 mm (0.413 in.)
Limit: 1.5mm (0.059 in.)
Exposed brush length "a" for 80 A type
Standard: 10.5 mm (0.413 in.)
Limit: 4.5 mm (0.177 in.)