Fuel Line Replacement and Repair

TM 10-3930-633-12

connect the tank supply line to the fuel pump and

c. Replacement.

(1) Be sure the new or repaired tank is free of

filter, and a tube assembly with connectors to

carry the fuel from the fuel pump to the car-

dust, dirt, metal chips or preservative material.

buretor.

Steam clean the interior and dry thoroughly if

b. Repair. Repair to a damaged fuel line can be

tank cleanliness is doubtful.

made by cutting out the cracked or kinked section

(2) Position tank (5) against the right side of

and bridging the resulting gap with a length of

the frame, and wrap straps (4) around tank.

rubber hose of appropriate size and fitted with

Secure ends of straps by installing screws (1),

hose clamps. This type of repair should only be

washers (2) and nuts (3).

made on the low pressure supply line from the

(3) Make certain drain plug (8) is in place in

tank to the pump and filter. The only practical

bottom of tank and is tight.

repair for other parts of the fuel lines is

(4) Install fuel sender and gasket to top of

replacement of the defective part.

tank and secure with machine screws.

c. Replacement. Refer to figure 4-24 and

(5) Install fuel shutoff valve and connect

proceed as follows:

fuel line. Make certain that fuel shut-off valve is

(1) Unscrew the fuel line fitting at the fuel

open.

shut-off valve (2). Unscrew and remove valve (2)

(6) Install filler neck seal (7) and filler cap (6)

from the tank.

to fuel tank filler neck.

(2) Hose (4) may be replaced by loosening

4-48. Fuel Line Replacement and Repair

clamps (3) at fuel line and fuel pump.

a. General. The fuel lines consist of a shut-off

(3) When installing a new valve (2), make

valve, mounted at the fuel tank, a length of metal

certain it is in the open position after fuel line (1)

tubing to carry fuel to the fuel filter and pump

is hooked up.

a s s e m b l y , rubber hose and clamps used to

1. Fuel line

3. Hose clamp

5. Adapter

2. Shut-off valve

4. Rubber hose

6. Tube assembly

Figure 4-24. Fuel Lines Installation

4-38