
7-37
BRKT
E
PTT MOTOR
SERVICE POINTS
Motor inspection
1. Inspect:
● Commutator
Dirty → Clean with #600 abrasive
paper.
2. Inspect:
● Segment undercut
Clog → Clean.
NOTE:
Remove all particles of metal with com-
pressed air.
3. Measure:
● Commutator diameter
Out of specification → Replace.
Commutator diameter:
Limit 21 mm (0.83 in)
4. Inspect:
● Armature coil continuity
Out of specification → Replace.
Armature coil continuity:
Commutator segments Continuity
Segment - Laminations Discontinuity
Segment - Shaft Discontinuity
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