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 measured amount of fuel, under pressure, to the fuel
3-11. Fuel Injection Pump
injectors (nozzles).
a. General. There are six fuel injection pumps,
b. Removal.
one for each cylinder. They are located on the control
(1) Remove 8 nuts and lockwashers (fig. 3-
(port) side of the engine. in the fuel and air valve
housing above the camshaft. The pumps are of the
housing.
plunger type. and are actuated by the camshaft. Their
purpose is to deliver a timed.
Figure 3-13. Fuel injection pump.
(2) Disconnect the fuel supply line from the
c. Disassembly.
fuel injection pump and the fuel injector at the cylinder.
(1) Remove nut (4, fig. 3-11, holder (2), stop
Cover ends of line to prevent contamination of the fuel
(1), and spring (3).
system.
(2) Lift out valve (6), valve seat (28), and
(3) Disconnect the injection pump control
gasket (7).
rack (12, fig. 3-11) from the control lever (14) and
NOTE
remove rack from the pump.
Tag valve and valve seat for
(4) Remove the four mounting screws (fig. 3-
reinstallation identification.
(3) Remove plunger (9), loosen setscrew
fuel and air valve housing.
(27), then remove barrel (26) and gasket (8).
3-39
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