A shut-down lever is used to shut the engine down.
The instruments generally required in the operation of a
When stopping an engine, the speed should be reduced
diesel engine consist of an oil pressure gage, a water
to idle and the engine allowed to operate at idle for a
temperature gage, an ammeter and a mechanical
few minutes to permit the coolant to reduce the
temperature of the engine's moving parts. Then the
shut-down lever should be pushed in and held in until
Also, closely related and usually installed in the general
the engine stops. Pushing in the shut-down lever
vicinity of these instruments are certain controls
manually places the injector racks in the "no-fuel"
consisting of an engine starting switch, an engine shut-
position. The shut-down lever should be returned to it's
down lever, an emergency pull stop and the engine
original position after the engine stops.
Emergency Pull Stop
Oil Pressure Gage
In an emergency or if after pushing in the shut-down
The oil pressure gage registers the pressure of the
lever the engine continues to operate, the emergency
lubricating oil in the engine. As soon as the engine is
Pull Stop may be pulled to stop the engine. The
started, the oil pressure gage should start to register. If
emergency Pull Stop will trip the air shut-off valve
the oil pressure gage does not register at least the
located between the air inlet housing and the blower and
minimum pressure listed under Running in the Engine
shut off the air supply to the engine. Lack of air will
Operating Instructions, the engine should be stopped
prevent further combustion of the fuel and stop the
and the cause of low oil pressure determined and
corrected before the engine is started again.
The emergency Pull Stop must be pushed back in after
Water Temperature Gage
the engine stops, so the air shut-off valve can be
The engine coolant temperature is registered on the
opened for restarting after the malfunction has been
water temperature gage.
corrected. The air shut-off valve located on the blower
air inlet housing must be reset by hand, by pushing
handle in until it is latched, CAUTION The emergency
An ammeter is incorporated into the electrical circuit to
Pull Stop should only be used to stop the engine in an
show the current flow to and from the battery. After
emergency, as damage to the blower seals may result.
starting the engine. the ammeter should register a high
charge rate at rated engine speed. This is the rate of
The manually operated shutdown device is operated by
charge received by the battery to replenish the current
the Pull Stop, located on the instrument panel, which is
used to start the engine. As the engine continues to
connected to the valve shaft lever by a control wire.
operate. the ammeter should show a decline in charge
rate to the hatter)'. The ammeter will not show zero
charge rate since the regulator voltage is set higher than
The engine throttle is connected to the governor speed
the battery voltage.
The small current registered
control shaft through linkage. Movement of the speed
prevents rapid brush wear in the battery-charging
control shaft changes the speed setting of the governor
generator. If lights or other electrical equipment are
and thus the engine speed.
connected into the circuit. then the ammeter will show
discharge when these items are operating and the
engine speed is reduced.
Electrical Starting System
The electrical system on an engine generally consists of
a starting motor, starting switch, battery-charging
alternator, voltage regulator, storage hatters and the
A mechanical tachometer is driven by the engine and
necessary wiring. Additional electrical equipment may
registers the speed of the engine in revolutions per
he installed on the engine at the option of the owner.
Engine Starting Switch
The electric starting motor has an overrunning clutch
The engine starting switch is mounted on the instrument
drive. The overrunning clutch drive starters have the
panel with the contact button extending through the front
solenoid mounted on the starter and have a totally
face of the panel. The switch is used to energize the
enclosed shifting mechanism.
starting motor. As soon as the engine starts. release