SWITCH 3N5976 - Caterpillar

Stopping the engine immediately after it has been working under load can result in overheating and accelerated wear of engine components.Excessive temperatures in the turbocharger centerhousing will cause oil coking problems. Excessive temperatures in the turbocharger centerhousing may damage the turbocharger bearing/shaft system and significantly shorten the life of the turbocharger.Allow the engine to gradually cool before stopping the engine
There may be several methods for shutting off the engine. Make sure that the shutoff procedures are understood. Use the following general guidelines for stopping the engine.
Open the main circuit breaker in order to disengage the driven equipment.
Operate the engine for a cooldown period before stopping the engine.
If the cooldown feature is utilized, turn the engine control switch to the "COOLDOWN/STOP" position. If the cooldown feature is utilized from the optional EMCP, the "AUTO" key is left in the AUTO position and the "STOP" key is pressed. The engine will operate for a programmed period of time. After the cooldown, the timer will activate the fuel shutoff. The engine control module will remain powered until the engine control switch is turned to the "OFF/RESET" position.
If the cooldown feature is not utilized, operate the engine at high idle for approximately five minutes. Then stop the engine.
Illustration 1 g00320124
Engine control switch in the "OFF/RESET" position
If the optional EMCP is not utilized for the restart, turn the engine control switch to the "OFF/RESET" position. The engine will coast to a stop. Ensure that any system that provides external support to the engine is secured after the engine is stopped.Automatic Stopping
Automatic stopping will occur when the engine is operating in the automatic mode and the remote start/stop initiate contact opens. If the cooldown feature is utilized, the engine will operate for a programmed period of time before the engine stops. Otherwise, the engine will immediately shut off.