VALVE 1518366 - Caterpillar

Stopping the engine immediately after it has been working under load can result in overheating and accelerated wear of the engine components.
Use the following procedure to allow the engine to cool:
Stop the machine.Never turn the disconnect switch key to the OFF position while the engine is running.
Turn the engine speed dial to "1".
Run the engine for five minutes at low idle. If you stop the engine without performing this procedure, overheating of engine components can occur. Accelerated wear of engine components can also occur.
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Turn the engine start switch key to the OFF position.
Remove the engine start switch key. Ensure that the engine speed dial is set to "1".Stop the Engine if an Electrical Malfunction Occurs
If the engine does not stop after turning the engine start switch key to OFF, perform the following procedure:
Bodily injury can occur from unexpected contact with open cab doors on machines equipped with a fixed cab riser.To avoid injury, close the cab door before climbing onto the rear of the machine.
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Open the access door on the left side of the machine. Secure the door.
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Open the engine access cover on the top of the machine.
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Push the end of the fuel shutoff solenoid inward in order to stop the engine.Note: Do not operate the machine until the malfunction has been corrected.