PRO TECHNICIAN

Inspection

Inspect Brush

The brush is held against the commutator by a spring. If the brush length exceeds the specified wear limit, the holding force of the spring will decrease, and contact with the commutator will become insufficient. As this conditon prevents smooth flow of the electric current, the starter turn may be disabled.
 
1. Inspect brush
Clean the brush and measure the brush length with vernier calipers.
HINT:
Measure the brush length at the middle of the brush (lowest wear point), using the tips of the vernier caliper jaws for greater accuracy.
Replace the brush when the above measurement is below the specified value.
 
REFERENCE:
• Replace brush

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