ENGINE OPERATION - Operating Instructions 1 Engine Operating Range Information on operating the engine at proper RPM. Idle the engine at 1,000 RPM for four minutes. Then low idle for 30 seconds before shutdown. This will allow circulating coolant and lubricating oil to carry heat away from the cylinder head, valves, pistons, cylinder liners, turbocharger, and bearings. This way you can prevent engine damage that may result from uneven cooling. fications for maximum engine speed. Failure to comply may result in equip- ment or property damage.
CAUTION NOTE Operating the engine at full throttle be- low peak torque will shorten engine life to overhaul, can cause serious engine damage, and is considered engine abuse. DO NOT operate the engine at full throttle operation below peak tor- que rpm for more than 30 seconds. Failure to comply may result in equip- ment or property damage. For applications with high idle-time, to help reduce soot loading in the after- treatment system, avoid long periods of idling. If idling is required, increase idle-speed using the cruise control function. Electromagnetic Interference Information on electromagnetic interference (EMI).
If not installed correctly, some vehicle accessories (CB radios, mobile transmitters, etc.) can generate and use radio frequency energy that may cause electromagnetic interference (EMI) between the accessory and the electronically controlled fuel system. Under these conditions, PACCAR is not liable for any performance problems with either the fuel system or the accessory. EMI is not considered by PACCAR to be an engine failure and therefore is not warrantable. PACCAR engines are designed to operate at full throttle under momentary conditions down to peak torque engine speed. This is consistent with recommended operating practices.
Engine Shutdown Before stopping the engine follow these precautions. NOTE DO NOT shut off the engine immedi- ately. A hot engine stores a great amount of heat and it does not cool down immediately after it is shut off. Always cool the engine down before shutting it off. You will greatly increase its service life. CAUTION Operating the engine beyond the max- imum engine speed can cause severe engine damage. Use proper operating techniques for the vehicle to prevent engine overspeed. See Engine Speci- System EMI Susceptibility PACCAR products are designed and tested for minimum sensitivity to incoming electromagnetic energy. The fuel system 22 Y53-1166-1G1 (08/2018)