TM 5-4320-274-14&P
Table 3-2. Troubleshooting
Malfunction
Test or Inspection
Corrective Action
ELECTRIC MOTOR
1. ELECTRIC MOTOR FAILS TO FUNCTION PROPERLY.
Check for loose or corroded wiring connections.
Clean corroded connections. Tighten loose connections at electric motor and ground.
2. ELECTRIC MOTOR OVERHEATS.
Step 1. Check power source voltage.
If the power source is too low, too high, or unbalanced, connect the electric motor to a
proper power source.
Step 2. Check motor for binding.
If the motor has any restrictive rotation, notify organizational maintenance.
PUMP
3. PUMP FAILS TO FUNCTION PROPERLY
Check to see if air is entering pump body through loose connections.
Tighten loose connections and be certain hoses have no leaks.
4. PUMP LEAKS DURING OPERATION.
Inspect for any visible leakage near seals or suction valve.
Notify organizational maintenance, when leakage occurs.
5. NO WATER OR INSUFFICIENT WATER OUTLET PRESSURE.
Step 1. Ascertain if pump is primed.
Prime pump.
Step 2. Inspect suction line for clogging.
Remove the suction line, clean clogged area and replace on unit.
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