Polaris R09VA17AA, Руководство по обслуживанию

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8.18
ELECTRICAL
Starter Brush Inspection / Replacement
1. Using an Ohm meter, measure the resistance between the
cable terminal and the insulated brush. The reading should
be .3 ohms or less. Measure the resistance between the
cable terminal and brush housing. Make sure the brush is
not touching the case. The reading should be infinite (no
reading).
2. Remove the brush plate and brushes. Measure the brush
length and replace if worn past the service limit.
3. Inspect the surface of the commutator for wear or
discoloration. See Armature Test.
4. Be sure that the terminal bolt insulation washer is properly
seated in the housing and the tab on the brush plate engages
the notch in the brush plate housing.
Armature Test
1. Inspect surface of commutator. Replace if excessively
worn or damaged.
2. Using a digital multi-tester, measure the resistance between
each of the commutator segments. The reading should be
.3 ohms or less.
3. Measure the resistance between each commutator segment
and the armature shaft. The reading should be infinite. (no
continuity)
4. Check commutator bars for discoloration. Bars discolored
in pairs indicate shorted coils, requiring replacement of the
starter motor.
5. Place armature in a growler. Turn growler on and position
a hacksaw blade or feeler gauge lengthwise 1/8

(.3 cm)
above armature coil laminates. Rotate armature 360°. If
hacksaw blade is drawn to armature on any pole, the
armature is shorted and must be replaced.
Brush Length Service Limit
0.20“ (5 mm)
0.20” (5 mm)
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