ELECTRICAL
5.18
BRUSH INSPECTION/REPLACEMENT, CONT.
6. Place a wrap of electrical tape on the threads of the
terminal bolt to prevent O-Ring damage during
reinstallation.
7. Install the O-Ring over the bolt. Make sure the O-ring is
fully seated.
8. Remove the electrical tape and reinstall the two small
phenolic washers, the large phenolic washer, flat
washer, and nut.
ARMATURE TESTING
1. Remove armature from starter casing. Note order
of shims on drive end for reassembly.
2. Inspect surface of commutator. Replace if
excessively worn or damaged.
3. Using a digital multitester, measure the resistance
between each of the commutator segments. The
reading should be .3 ohms or less.
4. Measure the resistance between each
commutator segment and the armature shaft. The
reading should be infinite (no continuity).
5. Check commutator bars for discoloration. Bars
discolored in pairs indicate shorted coils, requiring
replacement of the starter motor.
6. 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.
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