DETROIT DIESEL 53
Avoid Unecessary Engine Idling
if the unit is equipped with a fuel valve. close it. Fill
During long engine Idling periods, the engine coolant
temperature will fall below the normal operating
range. The incomplete combustion of fuel in a cold
engine will cause crankcase dilution, formation of
lacquer or gummy deposits on the valves, pistons and
rings and rapid accumulation of sludge in the engine.
NOTE: When prolonged engine idling is
necessary, maintain at least 800 rpm.
Drain the cooling system if it is not protected with
antifreeze and freezing temperatures are expected.
Leave the drains open. Open the raw water drains of a
heat exchanger cooling system.
1. Release the load and decrease the engine speed. Put
all shift levers in the neutral position.
2. Allow the engine to run at half speed or slower with
Check the oil level in the crankcase. Add oil, if
no load for a short time, then move the stop lever to
necessary, to bring it to the proper level on the
the stop position to shut down the engine.
Check and, if necessary, replenish the oil supply in the
If the engine does not stop after using the normal
stopping procedure, pull the. "Emergency Stop" knob
all the way out. This control cuts off the air to the
engine. Do not try to restart again until the cause for
the malfunction has been found and corrected.
Clean and check the engine thoroughly to make
CAUTION: The emergency shut-down system
certain it will be ready for the next run.
should never be used except in an emergency.
Use of the emergency shut-down can cause oil
Refer to Lubrication and Preventive Maintenance and
to be sucked past the oil seals and into the
perform all of the daily maintenance operations. Also
perform the operations required for the number of
hours or miles the engine has been in operation.
The air shut-off valve, located on the blower air inlet
Make the necessary adjustments and minor repairs to
housing, must be reset by hand and the "Emergency
correct difficulties which became apparent to the
Stop" knob pushed in before the engine is ready to
operator during the last run.