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TM 55-2915-335-30&P
Table 2-2. Maintenance Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. MOTOR FAILS TO START, HIGH CURRENT DRAW
Step 1. Check for jammed motor or impeller.
Remove pump cartridge from housing
(paragraph 2-10). Try to rotate impeller by
hand to check for motor jamming. Motor ar-
mature should turn with the impeller. If rota-
tion is smooth, proceed to Step 2.
If motor is jammed or does not
rotate smoothly, broken pieces
from the field tube magnets
may be lodged between the ar-
mature and field tube. Disas-
semble armature, field tube,
and impeller per the instruc-
tions and illustrations in
paragraphs 2-18 and 2-19.
Check for debris and defects as
shown. Replace parts, if defec-
tive.
If motor does not rotate
smoothly, bearings may be
damaged. Inspect and replace
motor bearings per instructions
and illustrations in paragraphs
2-16 and 2-22.
2-9
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