Fuel Supply Pump Assembly (Code A and Early Code F Injection Pumps).

TM 9-2910-226-34

b. The governor housing (TT) is attached to the

of the injection pump housing (AC). The main

components of the governor are the governor weight

and spider assembly (UU, WW), sliding sleeve (VV),

governor inner and outer springs (RR, SS), fulcrum

lever (NN), and operating linkage.

c. The governor weight and spider assembly is

pressed on an extension of the camshift (ZZ) and

contains two movable governor weights (UU) which

are pinned on opposite sides of friction drive spider

(WW). The weights swing freely on their pins.

d. The sliding sleeve moves freely on the cam-

shaft and contains a thrust bearing against which

the weight fingers bear. Each side of the sliding

sleeve contains a slot to receive the pivot pins of the

fulcrum lever. Counterbores at the rear of the sliding

sleeve receive the governor inner and outer springs.

e. The smoke limit cam (MM) is located at the top

of the fulcrum lever (NN) and rides on the stop plate

(PP) of the density compensator. The operating lever

(F, fig. 1-19 and 1-20) is connected to the operating

shaft (E, fig. 1-19 and 1-20). The operating shaft is

connected to the fulcrum lever by suitable linkage.

A Fuel control rod

F Operating lever

B Torque link spring

G Operating shaft spring

C Fulcrum lever

H Torque link

D Shaft spring plate

J Fulcrum lever pivot pin

E Operating shaft

K Yoke pivot pin

Figure 1-20. Governor assembly (code A), rear sectional view.

1-14. Fuel Supply Pump Assembly (Code A and

Early Code F Injection Pumps).

NOTE

The key letters shown below in parenthesis

refer to figure 1-21.

a. The fuel supply pump assembly consists of the

supply pump housing (B), camshaft driven gear (C),

drive shaft (D), idler gear (E), housing cover (A),

and check valve (G).

b. The supply pump housing contains inlet and

outlet ports for the flow of fuel. It also houses the

check valve which is held in place by the check valve

spring (F) and valve screw- (H). -

c. The housing cover and cavity in the supply

pump housing form a compartment in which the idler

gear and drive shaft rotate, The cover also houses

the relief valve (J) and spring (K).

d. Rotation is imparted by the fuel pump cam-

A Fuel control rod

E Operating shaft

shaft driven gear (C).

F Operating lever

B Fulcrum lever

G Fulcrum lever pivot pin

C Shaft spring plate

H Yoke pivot pin

D Operating shaft spring

Figure 1-19. Governor assembly {code B, C, D, E, F and G),

rear sectional view.

1-22