Fuel Pump - TM-10-3930-242-340078

TM 10-3930-242-34

Figure 3-32. Rocker arm and push rod, disassembly and

reassembly.

e . Reassembly. Refer to figure 3-32 and reas-

It is not a high-pressure-injection-type pump.

s e m b l e the rocker arm and push rod.

T h e fuel pump circulates an excess supply of

f. Installation. Refer to figure 3-31 and install

f u e l through the injectors and unused portions

r o c k e r arm and push rods.

go back to the fuel tank by means of a fuel re-

g. Adjustment.

t u r n manifold and fuel return line. A spring-

(1) Refer to figure 3-35 and adjust push

loaded relief valve (20, fig. 3-36) is incorporated

rods.

in the pump body (5) and is activated when out-

(2) Install

rocker

l e t pressure exceeds 65-75 psi. Fuel is returned

arm

cover

(TM

10-3930-242-12).

t h r o u g h an internal passage from pressure side

to suction side of pump. There are two holes in

the pump body (5) between the seals (13 and 14)

a. General. The fuel pump is mounted to the

t o provide a means of drawing off leakage. If

governor. The pump circulates, or transfers,

l e a k a g e exceeds one drop per minute, the seals

fuel from the fuel supply tank to fuel injectors.

m u s t be replaced. The fuel pump should main-