Regional Haul Model Operator's Manual - Peterbilt Motors Company

CRUISE CONTROL (OPTION)
• With the engine fan switch in the AUTOMATIC position,
the engine fan will automatically turn on when
the engine coolant reaches a temperature of about
200°F (93°C)
WARNING! Do not work on or near the fan
with the engine running. Anyone near the
engine fan when it turns on could be killed or
seriously injured. If it is set at MANUAL, the
fan will turn on any time the ignition key
switch is turned to the ON position. In AUTO,
it could engage suddenly without warning.
Before turning on the ignition or switching
from AUTO to MANUAL, be sure no workers
are near the fan.
CAUTION: The fan or equipment near it could
be damaged if the fan turns on suddenly when
you do not expect it. Keep all tools and equipment
away from the fan.
NOTE: Do not operate the engine fan in the MAN-
UAL position for extended periods of time. The
fan hub was designed for intermittent operation.
Sustained operation will shorten the fan hub's
service life as well as reduce fuel economy.
STARTING AND OPERATING THE VEHICLE
Cruise Control (Option)
This feature improves fuel mileage and reduces driver
fatigue by maintaining a constant vehicle speed. The
cruise control will only operate above a programmed minimum
vehicle speed 30 mph for the Cummins ISL engine.
Engaging the Cruise Control
NOTE: Ensure that the vehicle speed is above
the minimum cruise control speed and the
engine speed is above 1100 rpm.
1. Move the ON/OFF switch to the ON position.
NOTE: Toggling the SET/RESUME switch to the
RESUME position at this point will select the previously
set cruise speed.
2. Accelerate the vehicle to the desired cruise speed.
– 94 – Y53-6033 Regional Haul (R05/10)