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STARTING AND OPERATING 133
STOPPING THE ENGINE
Idle the engine a few minutes before routine shutdown. After full load operation, idle the engine three to five minutes before shutting
it down. This idle period will allow the lubricating oil and coolant to carry excess heat away from the combustion chamber, bearings, internal
components, and turbocharger. This is especially important for turbocharged, charge air-cooled engines. Refer to the following chart for proper
engine shutdown:
IDLE SHUTDOWN
This feature can be enabled so that the truck will automatically shutdown when the truck has been idling for a set period of time when the engine is at
operating temperature. Idle time can be set in 5 minute increments between
5 and 60 minutes. See an authorized dealer to enable this feature.
NOTE:
The idle shut down timer is disabled while the PTO (Power Take-off) is active.
Driving Condition Load Turbocharger Temperature Idle Time (min.) Before Engine Shutdown
Stop and Go Empty Cool Less than One
Stop and Go Medium - One
Highway Speeds Medium Warm Two
City Traffic Maximum GCWR - Three
Highway Speeds Maximum GCWR - Four
Uphill Grade Maximum GCWR Hot Five
4
21_DPF_OM_EN_USC_t.book Page 133
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