ADJUSTMENT - TM-3-4230-209-30-P0234

TM 3-4230-209-30&P

2-218

2-48. FUEL PUMP ASSEMBLY (CONT).

LOCATION/lTEM

ACTION

REMARKS

The rotary power-driven pump must be adjusted after

Fuel Pump Assembly/

Prepare the water heater and the required equipment for the fuel pres-

reassembly is complete or whenever pressure is sus-

sure test using the following procedures:

pected to be in error. To adjust the pressure, the

rotary power-driven pump must be reinstalled in the

Step 1. Fabricate a test gage line (fig D-1). Attach adapter (1) and pres-

water heater.

sure gage (2).

Step 2. Disconnect the fuel pump assembly nozzle pressure line at the

fuel pump 90 degree elbow (3). Connect and tighten the test line

and pressure gage to the fuel pump assembly at the 90 degree

elbow. Bend the test line and pressure gage so that it is visible

and accessible from the left side of the water heater.

Step 3. Unscrew and remove the end cap (4) nut from the rotary power-

driven pump.

Step 4. Pour one pint of motor oil into a five gallon gasoline can and fill

the rest of the can with combat automotive gasoline. The oil is

used to lubricate the pump.

Step 5. Remove the fuel hose assembly from the top cabinet door stor-

age area. Connect the fuel hose assembly to the water heater

and to the five gallon gasoline can. Uncoil the power cable in the

top cabinet storage area.

Step 6. Place the HEATER ON/PURGE ON switch to PURGE ON posi-

tion. (See TM 3-4230-209-10.)

Step 7. Use the pump unit assembly for a power source.

Step 8. Connect the power cable to the pump unit.

Step 9. Apply power to the water heater. See TM 3-4230-209-10.