Cummins/Onan — Engine Shut-Down
Operation
From a Cummins/Onan owner's manual covering: KT38, KTA19, Kt19, KtA38, KtA50, N-855, NH-672, NH-743, NH-855, NT-855, NTA-855, NTC-270…. Check it applies to your exact model before use.
Applies to: Cummins/Onan Kt19, Cummins/Onan KTA38, Cummins/Onan KTA50
Before you start
- Never leave the switch key or the override button in the valve open or run position when the engine is not running; with overhead tanks this would allow fuel to drain into the cylinders, causing a hydraulic lock.
Procedure
- Idle the engine 3 to 5 minutes before shutting it down to allow lubricating oil and water to carry heat away from the combustion chamber, bearings and shafts.
- Turn the switch to the 'Off' position, or turn the manual shut-down valve knob, to stop the engine.
- If the manual override on the electric shut-down valve is used, turn the button fully counterclockwise to stop the engine.
Specs & values
- Turbocharger temperature may rise as much as 100 F [38 C] if the engine is stopped suddenly
Full service-parts list: Cummins/Onan Kt19 →, Cummins/Onan KTA38 →, Cummins/Onan KTA50 →
Source: Cummins/Onan owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.