Disassembly. - TM-10-3930-622-140120

(2) Remove both screws and washers (Figure

a. Removal.

6-25) and remove pump and gasket from engine.

(1) Remove drain plug (Figure 6-26) and drain

all fuel into a container. Observe safety precautions for

c. Disassembly.

handling gasoline.

(2) Unscrew cap completely from tank fill

(1) Unscrew nut and disconnect bail from

neck.

pump body.

(3) Disconnect pipe nipple from elbow.

(4) Hoist truck to obtain access, remove four

(2) Remove bowl, screw and gasket. Discard

nuts, eight washers and four screws, and remove tank

gasket.

from below.

b. Cleaning.

(1) Remove tank (a. above).

(2) Put one gallon SD in tank and slosh it

around. Pour out SD quickly through fill pipe, to carry out

sediment.

(3) Air dry tank interior.

Some gasoline will probably be

c. Repair.

spilled at this time from the bowl.

(1) Replace all defective detachable parts.

Take precautions against fire.

(2) If damaged threads are repairable, clean

threads with tap.

d. Reassembly. Reverse procedure in c. above

(3) After purging tank of all gasoline fumes by

using a new gasket.

water flush and carbon dioxide discharge, weld all cracks

and leaks so tank does not leak air at 5 psi internal

e. Cleaning. Rinse bowl and screen in SD.

pressure.

f. Installation. Reverse b. above.

Do not exceed 5 psi during test.

(4) Rinse interior with alcohol (or approved

equivalent), drain, and air dry.

(5) Paint exterior with zinc chromate primer.

(6) If tank is to be returned to stock for later

issue, fog interior with preservative oil and seal all

openings with tape.

Otherwise, install fuel tank.

d. Installation. Reverse procedure in a. above.

6-72.

GOVERNOR AND CONTROLS.

a. Adjustment.

(1) Connect a tachometer to the engine to

read engine rpm.

(2) Start and warm up engine to operating

temperature

Figure 6-25. Fuel Pump, Exploded View

6-71.

FUEL TANK