MOTOR
MATCH
MARKS
17
ARMATURE
Figure 15-5 Motor Disassembly
TESTING AND INSPECTING INDIVIDUAL COMPONENTS
Read DANGER and WARNING on page 15-1.
ARMATURE
1. Disassemble the motor and carefully inspect the armature for the following defects:
• Burned, charred or cracked insulation.
• Improperly cured varnish.
• Thrown solder.
• Flared armature windings.
• Damaged armature core laminations.
• Worn, burned or glazed commutators.
• Dirty or oily commutators.
• Raised commutator bars.
• Worn armature bearing or shaft.
A dirty or oily commutator should be cleaned and wiped dry. Abnormalities identified during the inspection can
help determine original cause of failure. Slight roughness of the commutator can be polished smooth with 400 grit
or finer sandpaper. See following CAUTION and NOTE.
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9
10
2
1998/1999 PowerDrive Plus Vehicle Maintenance and Service Supplement Page 15-5
Testing and Inspecting Individual Components
14
Figure 15-6 Brush Spring Removal
15