1
Lifting bail
2
Fuel bowl
12
Diaphragm assembly
3
Bowl gasket
13
Diaphragm spring retainer
4
Screen
14
Diaphragm spring
5
Cover screw (10 req)
15
Pump body
6
Cover lockwasher (10 req)
16
Rocker arm link
7
Pump cover
17
Rocker arm
8
Valve cage gasket (2 req)
18
Mounting gasket
9
Valve cage assembly (2 req)
19
Rocker arm bushing
10
Valve cage retainer
20
Rocker arm spring
11
Retainer screw (2 req)
21
Rocker arm pin
22
Retainer washer (2 req)
Figure 72. -Continued.
the rocker arm (17) rocker arm link (16) and rocker arm spring (20) from the pump body (15). Press the bushing
(19) from the rocker arm.
f. Lift straight up on the diaphragm assembly (12), removing the diaphragm assembly, diaphragm spring retainer
(13), and diaphragm spring (14) from the pump body.
182. Fuel Pump Inspection and Cleaning
a. Clean all parts thoroughly with cleaning solvent, and dry with compressed air.
b. Inspect the diaphragm carefully for signs of deterioration or other damage.
c. Inspect the fuel pump screen for indications of gum or varnish deposits in the holes. If the screen cannot be
cleaned with an available solvent, then it should be replaced.
d. Examine the pump body carefully for signs of damage particularly at the rocker arm holes. The reciprocal motion
of the rocker arm may sometime loosen the rocker arm pin and eventually wear the rocker arm hole in the body into an
oval shape. Correction requires replacement of the fuel pump body.
e. Discard the pump mounting gasket and fuel bowl gasket. These gaskets should be replaced at regular overhaul
periods.
183. Fuel Pump Reassembly
a. Assemble the rocker arm link (16) to the rocker arm (17) with the bushing (19).
b. Insert the rocker arm and link into the body and temporarily hold it into place with a drift pin of appropriate size.
Install the rocker arm spring between the cast button inside of the pump body and the small ear on the rocker arm spring
(20).
c. Insert the diaphragm spring (14) into the pump body (15). Place the diaphragm spring retainer (13) on top of the
spring, 167
167
