ROD 9J1243 - Caterpillar

Stopping the engine immediately after it has been working under load, can result in overheating and accelerated wear of the engine components. Follow the stopping procedure, outlined below, to allow the engine to cool. Excessive temperatures in the turbocharger centerhousing will cause oil coking problems.
1. Reduce engine speed to low idle.2. Shift into NEUTRAL.3. Increase engine speed to no more than half engine speed for five minutes, to cool the engine.4. Reduce engine speed to low idle.To stop the engine, use one of the methods following that applies to the shutoff system on your engine.5. Turn the key to the OFF position, or ...6. ... pull out the manual shutoff control, or pull the accelerator up past the detent, or ...7. ... move the governor control lever (throttle) past the detent to the FUEL-OFF position.Make sure the "Stopping the Engine" procedure is understood. Refer to the operating instructions supplied with your equipment.