C - Peterbilt Motors Company

4
Operating Instructions
Operating the Engine
Normal
Monitor the oil pressure and coolant
temperature gauges frequently. Refer
to “Lubricating Oil System” on page
5-11 and “Cooling System” on page
5-12 for recommended operating
pressures and temperatures. Shut
off the engine if any pressure or
temperature does not meet the
specifications.
4-6
Engine Shutdown
Before Stopping the Engine
NOTE: Do not shut off the
engine immediately. 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.
Idle the engine at 1,000 rpm for 4
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.
Electromagnetic
Interference (EMI)
General Information
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 electronic 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.