I n s t a l l Fuel Pump
The pump must always be installed with
the inlet opening in the pump cover
(marked "RH IN") on the side toward the
cylinder block. Note in Figure 11C-50
on page 11C-29 that the fuel pump is
bolted to the blower. The pump is driv-
en by a drive disc at the rear of the
blower lower rotor. Install the pump as
follows:
1. Affix a new gasket to the pump body
mounting flange. Then place the drive
coupling fork on the square end of the
drive shaft.
2.
Place
the
fuel
pump
against
the
blower, being certain that the drive cou-
pling fork registers with the slots in the
drive disc on the blower rotor shaft.
3. Secure the pump to the blower with
three nylon patch bolts.
Figure 11C-58. Install Drive Shaft
4. If removed, install the fuel inlet and
and Gear
outlet fittings in the pump cover.
NOTE
5. Connect the inlet and outlet fuel lines
to the fuel pump.
The coating of sealant must be ex-
tremely thin since the pump clear-
6. Connect the fuel pump drain tube, if
a n c e have been set up on the basis
used, to the pump body.
of metal-to-metal contact. Too
much sealant could increase the
7.
If
the
fuel
pump
is
replaced
or
clearances and affect the efficiency
rebuilt, prime the fuel system before
of the pump. Use care that seal-
starting the engine using tool J 5956.
ant is not squeezed into the gear
This will prevent the possibility of pump
compartment, otherwise damage to
seizure upon initial starting.
the gears and shafts may result.
FUEL MANIFOLD
8. Secure the cover in place with eight
bolts and lock washers, tightening the
bolts alternately and evenly.
Description
9. After assembly, rotate the pump shaft
by hand to make certain that the parts
The fuel injectors are supplied with fuel
rotate freely. If the shaft does not ro-
oil through pipes connected to the fuel
tate freely, attempt to free it by tapping
inlet manifold. Excess fuel oil is re-
a corner of the pump.
turned to the fuel tank from the fuel in-
jectors through pipes connected to the
10. Install 1/8" pipe plugs in the upper
fuel outlet manifold.
unused drain holes.
The fuel inlet and outlet manifolds are an
11. If the pump is not to be installed im-
integral part of the current cylinder
mediately, place plastic shipping plugs in
head (see Figure 11C-59 on page
the inlet and outlet openings to prevent
11C-34). Since there are inlet ans outlet
dirt or other foreign material from enter-
passages provided opposite each injector
ing the pump.
p o s i t i o n in the side of the head as well as
at each end, greater flexibility is permit-
ted in the installation of the fuel lines to
the fuel manifolds. The fuel passages
are identified by the words "IN" (top
Fuel System and Governor