ASSEMBLY - TM-10-3930-607-150082

FUEL

assembly in the body. Align rocker arm pin hole with

4. Remove any obstructions from filter screen.

body and drive in the rocker arm pin.

Replace screen if damaged or if it does not fit snugly in

the head.

2. Install valves, springs and spring retainer. Put a

drop of light oil on the valves, and use a new gasket

5. Inspect the rocker arm for scoring or wear on

between the plate and body.

the push rod pad, and at the point of contact with link.

Check the link for wear at point of contact with the

3. Place the filter screen in the head. Install the

rocker arm and diaphragm pull rod. Replace parts as

vapor drum, using a new gasket.

necessary.

4. Install the diaphragm spring and diaphragm.

6. Replace diaphragm spring and valve springs.

5. Install the head on pump b ody. Be sure to line

Replace diaphragm spring only if it is broken, distorted,

up the file marks.

Install assembly screws and

rusted or pitted.

lockwashers loosely until screws just engage

7. Replace the diaphragm if it is ruptured, cracked

lockwashers. Actuate rocker arm several full strokes to

or worn.

flex diaphragm.

CAUTION:

Sufficient diaphragm cloth must be

pulled inside of the pump body or

pump will deliver too much pressure.

Tighten the cover screws alternately

and securely.

6. Test operation of pump valves by attaching

pressure gauge to outlet and operate rocker arm.

Pressure should not fall off rapidly.

F. INSTALLATION

1. Place a new mounting gasket on the fuel pump

mounting flange. Use a non-hardening cement to hold

gasket in position while installing the pump.

2. Insert the rocker arm through the fuel pump

mounting pad opening of the adapter.

CAUTION

Make sure that the rocker arm pad

rests against the fuel pump. Push

rod in the adapter. Broken rocker

Figure 7.

arm or broken link and possible

engine damage will result if pump is

E. ASSEMBLY (Fig. 6)

not properly installed.

1. Soak the new diaphragm in clean kerosene, fuel

3. Holding the pump in position against

oil, or gasoline until it is needed for installation.

Assemble link, rocker arm, and bushing. Place the

B-45