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 (5) Check fuel flow of the fuel transfer pump after
(7) into pump body as an assembly. Insert driven shaft (6)
overhauling. Disconnect fuel return line at some point
and driven gear in pump body as an assembly.
between cylinder head and fuel return line to day tank. Place
(5) Apply a thin coating of vinyl, nonadherent
open end of this line in a container and start the engine.
type sealer, around outer edge of pump cover finished
Warm engine and run at 1200 rpm. Measure amount of fuel
surfaces.
returned to the container in a 1-minute period. A minimum of
(6) Position cover on pump body and secure with
1/2 gallon should flow from the return line in 1 minute.
eight capscrews and lockwashers. Tighten bolts to 35 foot-
pounds.
(7) Turn fuel pump drive shaft to be sure that
5-15.
Fuel Filter and Strainer
parts rotate freely. If bind is noted. tap corner of pump cover
a. General. The fuel filter and strainer are essentially
with a hammer to relieve binding.
the same in construction and operation, therefore they are
f. Installation.
treated as one in the maintenance instructions. Each has a
(1) Place fuel pump drive coupling over square
replaceable filter element which should be renewed after every
end of fuel pump drive shaft.
500 hours of use.
(2) Place fuel pump over studs and against fuel
b. Removal.
pump drive, being certain that drive coupling meets with the
(1) With engine stopped, open drain cock at
square end of the drive assembly shaft.
bottom of filter or strainer shell (fig. 5-46) and remove plug
(3) Install lockwashers and nuts.
on cover. Empty contents of shell into suitable container.
(4) Connect fuel inlet and outlet lines.
Close drain cock.
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