Alternator Brush: Testing and Inspection
BRUSHES1. Ensure the brushes have not been worn to or beyond their wear limit.
Brush wear limit: 3.6 mm (0.15 in.)
2. Check the brush springs for burning and loss of tension due to excessive heat.
SLIP RINGS
1. Check the slip rings for excessive wear and damage.
Minimum slip ring diameter: 26.7 mm (1.051 in.)