ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-633-12
HOSE ASSEMBLY (PUMP OUTPUT)
PIPE TO HOSE ELBOW
HOSE ASSEMBLY (PUMP INPUT)
SCREW AND CAPTIVE WASHER ASSEMBLY
NUT AND CAPTIVE WASHER ASSEMBLY
PUMP TO MOTOR COUPLING
HEXAGON HEAD CAPSCREW
11. FUEL TRANSFER PUMP
12. FUEL PUMP BRACKET
13. HOSE ASSEMBLY
16. SOLENOID VALVE L102
17. FUEL FILTER HEAD ASSEMBLY
18. MOTOR B102
20. SHAFT KEY
BOLT 23. LOCKWASHER
24. FLAT WASHER
Figure 4-38. Fuel Transfer Pump and Solenoid Valve (Sheet 2 of 2)
MAINTENANCE OF SOLENOID VALVE. The solenoid valve L102 is a Conway normally closed brass valve.
When energized, the solenoid valve opens and allows the passage of fuel into the fuel tank.
The following test should not be performed if the generator set fuel tank is more than
half full. Performing this test when the generator set fuel tank is more than half full may
provide inaccurate results due to fuel level sensor FL2 sensing sufficient fuel in the
generator set fuel tank and deenergizing the fuel transfer pump automatically. If it
becomes necessary, fuel must first be drained from the generator set fuel tank.
Remove hose assembly (13, Figure 4-38) and place suitable container under solenoid valve.
Two people are required to perform this task.
Set FUEL PUMP switch so to HAND. Hold sheet of rubber over inlet and check for suction. Check
for sound of solenoid energizing.
Replace solenoid valve L102 if it fails the above test
Set fuel transfer pump circuit breaker CB121 (10, figure 2-7) and fuel transfer system and coolant
heater circuit breaker CB122 (8) to OFF. Remove cover by prying off red cap (19, Figure 4-38) on
top of solenoid (16). Tag and disconnect wiring (21) to the solenoid valve L102 (16).
Remove supply hose assembly (13) from pipe to hose elbow (2).
Using an suitable open-end wrench, unscrew nipple (14) from filter strainer (15), and remove the
solenoid valve L102 (16).
Assemble nipple (14) to filter strainer (15), applying sealing compound TT-S-1732, or equivalent, to the
male pipe threads.
When tightening the connections, do not use the valve as a lever. Wrenches
applied to valve body or piping are to be located as closely as possible to the
Thread new solenoid valve L102 (16) onto nipple (14) and then thread pipe to elbow (2) onto the solenoid
Reattach hose assembly (13) to pipe to elbow (2).