TM 10-4930-351-14
0013 00
Table 1. Unit Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
b.
Open coupling valves and visually inspect for blockage. Remove any blockage.
Step 2. Check for clogged strainer.
a.
Separate pump from inlet reducer. (WP 0071 00)
b.
Remove and clean strainer. (WP 0072 00)
Step 3. Replace pump. (WP 0071 00)
ENGINE
1. Engine will not crank
Step 1. Check electrical power to starter.
a.
Check for +24 vdc at "+" terminal of starter solenoid. If present, go to step 2.a.
b.
Disconnect battery power cable from engine module and check connector for +24 vdc between outer and
inner conductor.
Step 2. Check continuity of starter power circuit.
a.
Disconnect and remove wires from starter terminal of starter solenoid. Check that resistance from starter
wire to ground is approximately zero (0) ohms. If the resistance is infinite or very high, replace starter.
b.
Check that resistance from center terminal of engine module NATO connector to "+" terminal of starter
solenoid is zero (0). If the resistance is infinite or very high, conduct a visual inspection of the NATO
connector and the starter power cable for broken or loose connections or cables.
c.
Disconnect battery power cable from battery. Check that resistance from center conductor of NATO
connector to "+" terminal of the battery connector is zero (0). Check that resistance from outer conductor
of NATO connector to "-" terminal of the battery connector is zero (0). If the resistance is infinite or very
high, repair or replace battery power cable W202. (WP 0050 00 or WP 0051 00)
2. Engine cranks but will not start
Check fuel supply to engine
a.
Drain and check fuel filter. Replace if clogged. (WP 0021 00)
b.
Refer to Direct Support Maintenance for repair.
0013 00-2
