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Page Title:
Manifold Air Induction and Heater System |
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 fuel injection pump. The solenoid is normally
e. Fuel Filters (figs. 1-3 and 1-6). T h e
open. A switch in the vehicle driver's com-
replaceable element type primary fuel filter is
partment actuates the ciruit to close the solenoid.
mounted on the right front of the engine and
Closing the solenoid cuts off fuel delivery from
contains a fuel drain or purging line. The
the fuel injection pump and stops the engine.
replaceable element type secondary fuel filter, or
g. Fuel Return Check Valve. A fuel return
the water / separator type filter, is mounted on
check valve (fig. 1-11) is installed between the
the left front of the engine. Each filter has a
fuel injection pump fuel return outlet and the
drain or purging line connected to separate drain
fuel return hose assembly. The valve prevents
cocks mounted on a common bracket on top of
fuel flowing back to the injection pump when the
the engine. Each drain cock is fitted with a
fuel supply is closed.
flexible hose for dumping drainage from the
filters. Fuel from the vehicle fuel tank passes
1-19. Manifold Air Induction and Heater
through the primary filter before entering the
System
engine fuel pump. The pump delivers fuel to the
a. Turbosupercharger Assemblies. Exhaust
secondary filter, or the fuel / water separator
gas driven turbosupercharger assemblies (figs. 1-
filter on late engines and on to the fuel injection
1, 1-2, and 1-4), one for each bank of cylinders,
pump. Excess fuel bypasses the fuel injection
are mounted on each side of the engine, at the
pump and is returned to the fuel tanks (fig. 1-
rear. The turbosuperchargers increase the
11). The fuel/ water separator filter unit has
pressure of the intake air, thereby delivering a
three replaceable elements, and contains a
higher density air to the cylinders as compared
chamber for collecting water. The unit provides
with a non-supercharged engine. This higher
moisture-free and uncontaminated fuel to the
density air, with a proper fuel flow, increases
injection pump.
engine power.
f. Fuel Cutoff Solenoid. An electrically
operated fuel cutoff solenoid is mounted in the
1-15
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