valve above the fuel pump. In case the electric fuel
6. After engine starts, pump primer slowly to keep
shut-off valve is inoperative, turn switch to the right to
engine idling smoothly. In cold weather this may require
open the fuel shut-off valve.
4 to 5 minutes, or longer. Do not accelerate engine.
6. After three or four seconds of cranking push in
7. After engine has warmed up until it does not
the compression release control (if so equipped) and
falter between primer strokes, stop pumping. Close
continue to crank until the engine starts. Release
primer and lock. Turn off glow plug switch. (Red
starting button the instant the engine starts.
indicator light will go off.)
NOTE: Do not run the starting motor for more
DO NOT USE PREHEATER WHEN TRUCK IS IN
than approximately 30 seconds at any time. If the
MOTION. THE PREHEATER BURNS INCOMING AIR,
engine fails to start or makes a false start, do not
AND MAY RESULT IN DAMAGE TO THE ENGINE.
turn the starting switch key again until the engine
has come to a complete stop.
ENGINE SHUTDOWN
CAUTION: Do not start or run an engine in a
A basic rule of good engine operation concerns the
closed garage.
Exhaust gas from all internal
importance of idling the engine from three to five minutes
combustion engines' contains poisonous carbon
before shutting down. This few minutes idling allows the
monoxide gas which is odorless, tasteless, and
lubricating oil and water to carry heat away from the iron
colorless. Keep the garage doors wide open when
masses.
starting and keep your cab completely ventilated at
all times to avoid drowsiness.
The larger the engine, the greater the need for this
idling period and of course, the length of the idling period
should somewhat follow the size of the engine in order to
avoid seals or like features of an engine being damaged
COLD WEATHER STARTING AIDS
by rising heat.
As an aid in starting the engine in cold weather
Cummins Diesel Engine:
temperatures, an intake air preheater arrangement may
be used.
To stop the engine turn the starting switch to "OFF".
The preheater equipment consists of a hand priming
Pulling the control out will stop the engine. If the
pump to pump fuel into the intake manifold, a glow plug
engine has been stopped by pulling the control, the
electrically heated by the battery, and a switch to turn on
shutdown latch assembly located at inlet side of engine
the glow plug when fuel is pumped into the intake air.
blower must be reset before engine can be started.
CAUTION: Do not use ether in conjunction with
CAUTION: If engine has had to be stopped using the
the preheater.
emergency shut-down, the cause should be found
before the engine is started again.
To use the preheater for cold starting follow this
starting procedure:
TEMPERATURE GAUGE
1. Disengage clutch.
The temperature gauge indicates the temperature of
the coolant in the cooling system.
2. Do not accelerate engine during the starting
The gauge operates only when the starting switch is
procedure.
turned to "ON" position, or is turned to the left to operate
the accessories. If the indicator suddenly rises to the
240 degree position, the engine should be stopped and
3. Push glow plug switch located to the left of the
the cause of overheating determined.
operator to "ON" position. Red indicator light must be
on.
SPEEDOMETER AND ODOMETER
The speedometer indicates the vehicle speed in
4. After red light has been on for 20 seconds, start
miles (or kilometers, if so adapted) per hour. The
cranking the engine. As soon as engine begins rotating,
odometer records the total number of miles traveled.
operate the preheater priming pump to maintain 40 to 60
The units operate through a flexible cable from the
psi fuel pressure.
Use of primer located at the
transmission.
instrument panel lower left side before the 20 second
interval will wet glow plug and prevent heating.
5. If engine does not start within 20 seconds, stop
cranking.
Wait 30 seconds and repeat cranking
operation.
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