Warm-up
Run the engine at part throttle for about five minutes to allow it to warm up before applying
a load.
Inspection
Transmission - While the engine is idling, check the transmission for proper oil level and
add oil as required. Look for coolant, fuel, or lubricating oil leaks at this time. If any are
found, shut down the engine immediately and have leaks repaired after the engine has cooled.
Crankcase - If the engine oil was replaced, stop the engine after normal operating
temperature has been reached. Allow the oil to drain back into the crankcase for
approximately 20 minutes, and check the oil level. If necessary, add oil to bring the level to
the proper mark on the dipstick.
Turbocharger - Make a visual inspection of the turbocharger for oil leaks, exhaust leaks,
excessive noise or vibration. Stop the engine immediately if a leak or unusual noise or
vibration is noted. Do not restart the engine until the cause of the concern has been
investigated and corrected.
Avoid unnecessary Idling
During long engine idling periods with the transmission in neutral, the engine coolant
temperature may 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. When
prolonged idling is necessary, maintain at least 850 rpm spring/summer and 1200 rpm fall/
winter.
STOPPING THE ENGINE
Normal Stopping
1.
Decrease engine speed back to normal idle and put all shift levers in the park position.
2. Allow the engine to run between idle and 1000 rpm with no load for four or five
minutes. This allows the engine to cool and permits the turbocharger(s) to slow down.
After four or five minutes, shut down the engine.
Stopping a turbocharged engine immediately after high speed operation may
cause damage to the turbocharger as it will continue to turn without an oil supply
to the bearings.
179P/N 12261-683 REVISED: January 2015
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