Operating The Engine; Stationary Pto Operation; Engine Fan Control - Peterbilt 348 2017 Operator's Manual

OPERATING THE
ENGINE

Stationary PTO Operation

The cruise control buttons for this
vehicle may be used to control the
engine rpm when the vehicle is
stationary and the operator wants to
use the PTO on the engine. Use the
cruise control options in the same
manner as with the vehicle in motion,
but instead of setting vehicle speed,
the engine speed (RPM) is set instead.
Setting Idle Speed
1. Ensure parking brakes are applied.
2. Ensure transmission is in Neutral.
3. Engage PTO per the
manufacturer's operating
instructions.
4. Move the ON/OFF switch to the
"ON" position.
(03/17)
5. Toggle the SET/RESUME switch
to obtain the desired engine rpm.
Cancelling Cruise Control
You can cancel cruise control in any
of these ways:
•
Tap the brake pedal.
•
Tap the clutch pedal.
•
Move the ON/OFF switch to the
"OFF" position.
Y53-6060-1C1

OPERATING THE ENGINE

Engine Fan Control

The engine fan can be turned ON
using a switch that is mounted on the
accessory switch panel. This lets you
set the fan to manual or automatic
operation.
•
With the ignition key turned ON
and the fan switch in the MANUAL
position, the engine fan will be ON
regardless of engine temperature.
•
With the engine fan switch in the
AUTO position, the engine fan will
automatically turn ON when the
engine computer sends a signal
requiring the engine fan to be on.
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