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TM 55-2915-335-30&P
Table 2-2. Maintenance Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7. MOTOR IS NOISY WHEN RUNNING
Step 1. Check motor housing for loose objects.
Remove armature, field tube, and impeller
(paragraphs 2-18 and 2-19). Check inside field
tube for loose objects. Check for broken field
tube magnets. If nothing is found, proceed to
Step 2.
Loose objects within the
cartridge are usually the result
of broken field tube magnets.
Inspect for damaged field tube,
armature, and impeller per in-
structions and illustrations in
paragraphs 2-18 and 2-19.
Step 2.
If no loose objects were found in
motor housing, the armature may be bent.
Inspect armature and field
magnets for wear per instruc-
tions and illustrations in
paragraph 2-18. Replace if
defective.
2-18
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