DETROIT DIESEL 53
motor switch firmly. If the engine fails to start within
30 seconds, release the starting switch and allow the
starting motor to cool a few minutes before trying
Run the engine at part throttle and no-load for
again. If the engine fails to start after four attempts,
approximately five minutes, allowing it to warm-up
an inspection should be made to determine the cause.
before applying a load.
CAUTION: To prevent serious damage to the
If the unit is operating in a closed room, start the
starter, if the engine does not start, do not press
room ventilating fan or open the windows, as weather
the starting switch again while the starting
conditions permit, so ample air is available for the
motor is running.
While the engine is running at operating temperature,
check for coolant, fuel or lubricating oil leaks. Tighten
the line connections where necessary to stop leaks.
Normal engine coolant temperature is 160°F. to 185°
If the engine crankcase was refilled, stop the engine
after normal operating temperature has been reached,
allow the oil to drain (approximately IO minutes) back
into the crankcase and check the oil level. Add oil, if
necessary, to bring it to the proper level on the
Use only the heavy duty lubricating oil specified under
Lubricating Oil Specifications in Section 13.3.
Remove the radiator or heat exchanger tank cap slowly
after the engine has reached normal operating
temperature and check the engine coolant level. The
coolant level should be near the top of the opening. If
necessary, add clean soft water or a high boiling point
Check and, if necessary, replenish the oil supply in the
Observe the oil pressure gage immediately after
starting the engine. If there is no pressure indicated
within 10 to 15 seconds, stop the engine and check the
lubricating oil system. Refer to the Trouble Shooting
Charts in Section 15.2.
SEC. 13.1 Page 3