03-40
Auxiliary Systems
03-40
HOLLEY ONE-BARREL CARBURETOR MODEL 1940 (Continued)
POWER VALVE
SOCKET WRENCH
PPD0031
PPD0032
Test the pump discharge valve prior to assembly by
filling the pump cylinder with clean fuel. Hold down the
pump discharge ball and weight with a small punch or
drift and operate the pump plunger by hand. If the
valve and seat are leaking, fuel will rise around the
valve weight and spill over.
Adjustments During Assembly
Assemble the throttle body, and assemble the throttle
body to the main body. Use a new gasket and torque
the screws to 30 in.-lbs. in three even steps. Install the
main jet and power valve with the proper tools.
If the valve is leaking, remove the hexagon weight and
lightly stake the seat with the old ball using a suitable
punch or drift. Throw the old ball valve away and install
the new ball from the kit, at the proper time during
reassembly.
Install the float shaft in the float lever and insert
assembly in the float shaft cradle. Insert the retaining
spring.
Install
a
new
gasket on
the new fuel inlet valve (needle
and seat).
Hold the retaining spring with the fingers and invert the
bowl. A straightedge placed across the surface of the
bowl should just touch the toes of the float (the portion
of the float that hangs farthest from the fuel inlet). If
necessary, bend the float tang to obtain this
adjustment. Complete the reassembly.
ASSEMBLY
PPD0034
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