Quantcast REMOTE NORMAL SHUTOFF - TM-5-2815-232-140246

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HYDRAMECHANICAL PROTECTIVE SYSTEM
SYSTEMS OPERATION
SCHEMATIC NO. 15 (REMOTE NORMAL SHUTOFF)
3. Start-up override. 4. Diverter valve orifice. 7. Diverter valve. 8. Fuel shutoff actuator. 19. Remote normal
shutoff valve.
As the crankshaft rpm becomes slower, the
REMOTE NORMAL SHUTOFF
governor feels the speed reduction and moves the
terminal shaft and linkage in the fuel "ON" direction,
Make Reference to Schematic No. 15
against fuel shutoff actuator (8).
This moves the
protective system oil back toward the system oil pump.
The remote normal shutoff is an option that can
The check valves in diverter valve (7) move to stop this
be used with the hydramecahnical protective system. An
oil flow and keep the engine from surging.
air or electric operated remote normal shutoff valve ( 19)
is installed in the diverter valve return line. When remote
NOTE: The start-up override valve (3) must be operated
normal shutoff valve (19) is operated, the outlet of the
to release the fuel shutoff actuator hydraulic pressure
diverter valve is stopped.  The oil pressure becomes
before the engine can be started.
equal on both sides of diverter valve orifice (4). Spring
.
force will move the valve spool of diverter valve (7) to
make an alignment of the oil passage with the oil line to
fuel shutoff actuator (8). Oil pressure can now activate
the fuel shutoff actuator, which causes the governor to
move the fuel control linkage to the "SHUTOFF" position
and shutdown the engine.
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