TM 5-3805-260-24
GOVERNOR PARTS
FUEL SYSTEM COMPONENTS
23. Piston for dashpot governor. 24. Spring for
dashpot governor. 26. Spring seat. 27. Over
fueling spring. 28. Thrust collar.
When governor springs (25i are put in compression,
the spring seat at the front of the governor springs will
make contact with load stop lever (2). Rotation of the
load stop lever moves load stop pin (17) up until the load
stop pin comes in contact with the stop bar or stop
screw. This stops the movement of thrust collar (28),
the connecting levers, and sleeve control shafts (19). At
this position, the maximum amount of fuel per stroke is
being injected by each injection pump.
The carrier for governor weights (30) is held on the
rear of camshaft (13) by bolts. Engine rpm goes up,
injection pump camshaft (13) turns faster. Any change
of camshaft rpm will change the rpm and position of
governor weights (30). Any change of governor weight
position will cause thrust collar (28) to move. As
governor weights (30) turn faster, thrust collar (28) is
pushed toward governor springs (25). When the force of
governor springs (25) is balanced by the centrifugal force
of the governor weights, sleeves (32) of the injection
pumps are held at a specific position to send a
specific amount of fuel to the engine cylinders. When
the governor control lever is turned toward the FUEL-
OFF position with the engine running, there is a
reduction of force on governor springs (’5). The
movement of the linkage in the governor will cause fuel
control shafts (19) to move sleeves (321 down, anti less
fuel will be injected in the engine cylinders. To stop the
engine, turn the ignition switch to the "OFF" position.
This will cause the slut-off solenoid to move linkage in
the fuel pump housing. Movement of the linkage will
cause sleeve levers (3 1 ) to move sleeves (32) down,
and no fuel is sent to the engine cylinders. With no fuel
going to the engine cylinders, the engine will stop.
14. Housing for fuel injection pumps. 19. Sleeve
control shafts. 31. Sleeve levers. 32. Sleeves.
FLOW OF FUEL USING THE PRIMING PUMP
When the handle of priming pump (2) is pulled out,
negative air pressure in priming pump (2) opens check
valve (A) and pulls fuel from fuel tank (7). Pushing the
handle in closes check valve (A) and opens check valve
(B). This pushes air and/or fuel into housing (14)
through the fuel passages and check valve (C). More
operation of priming pump (2) will pull fuel from fuel tank
(7) until the fuel lines, fuel filter (9) and housing (14) are
full of fuel. Do this until the flow of fuel from manual
bleed valve (5) is free of air bubbles. Relief valve (10)
will open and let the fuel go to the inlet for fuel priming
pump (2) if the pressure gets higher than 20
psi (140 kPa) when using priming pump (2).
CONSTANT BLEED VALVE
CONSTANT BLEED VALVE
4. CONSTANT BLEED VALVE. D. Check valve
2-9
