Carbon Brush Inspection
●Measure the length [A] of each carbon brush [B]
★If any carbon brush has reached the use limit, replace
the carbon brush plate assembly
Length of Starter Motor Carbon Brush
Standard: 11.5 mm
Use limit: 6.0mm
Commutator Cleaning and Inspection
●If necessary, polish the surface [A] of commutator
with a crocus cloth [B] and clear the groove
●Measure the diameter [A] of commutator [B]
★If the diameter of commutator is shorter than the use
limit, replace the starter motor with a new one
Commutator Diameter
Standard: 22.3mm
Use limit: 21mm
★If the resistance between two commutators is higher
or there is no reading, the coil is open-circuit and the
starter motor must be replaced.
●Measure the resistance between commutator and shaft
[B] with a multimeter
★If the reading is 0, the armature is short-circuited and
the starter motor must be replaced
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