and insert the pull rod of the diaphragm assembly (12) down through the spring and oil sea!, which is pressed into the
pump body.
d. Press on the diaphragm in such a manner that the pull rod is tilted slightly away from the rocker arm link. Invert
the pump body until it is upside down, and allow the link to fall into engagement with the pull rod. Bring the diaphragm
back to level position in order to hook the pull rod onto the link.
e. Hold the drift pin with the left hand and carefully drive the drift pin out of the pump body with the permanent rocker
arm pin (21). Note that the rocker arm pin has a head on one end and a tapered hollow end at the other. Install the
retainer washer (22) over the hollow end of the pin. Rest the head of the rocker arm pin on a solid surface and spread or
"mushroom" the hollow end of the pin with a ball peen hammer or round-point punch.
f. Invert the cover casting and drop the valve gage gaskets (8) down into the two drive pockets of the cover. Insert
the valve cage assemblies (9) down into the valve holes on top of the valve cage gaskets. The inlet valve must be
installed with the legs upward; the outlet with the legs downward. Place the valve cage retainer (10) down on the valves so
that the two pairs of arms rest on the edges of the valve assemblies and the two small holes in the retainer are aligned
with the screw holes in the cover casting. Install and tighten the retainer screws (11).
g. Turn the pump cover right side up. Install the bowl gasket (3) on the edge of the cover casting. Place the screen
(4) over the gasket in such a way that the rim of the screen lies close against the gasket. The two small metal projections
near the center of the screen should be facing up. Install the fuel bowl (2) and lifting bail (1) and tighten the lifting bail nut
securely.
h. Lock the partially assembled pump body in a soft-jaw vise. Position the partially assembled cover on top of the
pump body and line up the file marks. Level the diaphragm by moving the rocker arm. Hold the rocker arm in while
installing the cover screws (5) and cover lockwashers (6). Be sure that these screws pass through the holes in the
diaphragm easily and without chewing the fabric. Tighten the screws only enough so that they just touch the lockwashers.
i. Push the rocker arm back and forth several times, releasing it with a snap. Tighten the cover screws, using a
crisscross pattern from side to side until all screws are secure.
j. Install the pump to the crankcase as instructed in paragraph 75b.
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