Table 5-1. Direct Support Maintenance Troubleshooting – Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. ELECTRIC MOTOR WILL NOT OPERATE
Step 1.
Check vehicle power supply.
Insure charging systems are operating properly. Refer to TM applicable to the
transporting vehicle.
3. ELECTRIC MOTOR WILL NOT RUN
Step 1.
Check for foreign material in volute housing that would prevent the impeller from
turning.
Remove foreign material.
Step 2.
Check Electric motor for proper operation.
Repair or replace defective parts.
4. PUMP IS NOISY
Step 1.
Step 2.
5. PUMP LEAKS
Step 1.
Check for foreign material in volute housing.
Remove foreign material.
Check for loose impeller.
Tighten impeller or replace defective parts.
Inspect for defective gaskets, O-rings and seals or mounting screw compression
inserts.
Replace defective parts.
5-2
TM5-4930-230-13
