ELEC
7-15
STARTER MOTOR
INSPECTION
1.Check:
• Commutator
Dirty → Clean it with #600 grit sandpaper.
2.Measure:
• Commutator diameter @
Out of specification → Replace starter motor
Commutator wear limit:
14.8 mm
3.Measure:
• Mica undercut @
Out of specification → Scrape the mica to
proper value using a hacksaw blade can be
ground to fit.
Mica undercut @:
1.15 mm
N.B.:
The mica insulation of the commutator must be
undercut to ensure proper operation of
commutator.
4.Inspect:
• Armature coil (insulation/continuity)
Defects → Replace starter motor.
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Inspecting steps:
• Connect the pocket tester for continuity check
햲 and insulation check 햳.
• Measure the armature resistances.
Armature coil resistance:
Continuity check 햲:
0.06 ~ 0.08
Ω at 20°C
Insulation check 햳:
More than 1 M
Ω
• If the resistance is incorrect, replace the starter
motor.
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@
@
햲
햳
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