ENGINE ELECTRICALS
ROTOR AND BEARING
Check the face of the slip rings for contamination and
roughness. If found to be roughened, dress with a fine
sand paper (#500 – 600). If found to be contaminated,
clean with a cloth saturated with alcohol.
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Ball Bearing
Check that the ball bearings rotate smoothly.
If the ball bearings are noisy, they must be replaced.
Use a vernier caliper to measure the slip ring outside
diameter.
If the measured value exceeds the limit, the rotor must
be replaced.
Slip Ring Outside Diameter mm(in.)
Standard Limit
31.6 (1.24) 30.6 (1.20)
INSPECTION AND REPAIR
Make the necessary adjustments, repairs, and part replacements if excessive wear or damage is dis-
covered during inspection.
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