Peterbilt Medium Duty Truck Owner's Manual - Peterbilt Motors

OPERATING THE TRANSMISSION
Reengaging the Cruise Control
1. Move the ON/OFF switch to the ON position.
or
2. Toggle the SET/RESUME lever to the RESUME position.
Operating the Transmission
Introduction
Your Medium Duty vehicle is equipped with either a manual
or automatic transmission with special features and
gearing to meet your particular needs. It is important for
you, the driver, to understand how your particular transmission
is operated. To do this, you have two sources of
information: this Operator's Manual and the transmission
manufacturer's Driver/Operator's Instruction Manual.
Because of the variety of different transmissions installed
in Medium Duty vehicles, operating procedures for your
particular transmission are not included in this manual;
therefore, you should read and understand both manuals.
Read the general guidelines and instructions that follow
STARTING AND OPERATING THE VEHICLE
and read the specific instructions contained in the transmission
manufacturer's manual that is included with your
vehicle.
NOTE: You will find a shift pattern diagram in the
cab. Check to be sure you know the correct
sequence for your particular transmission.
Operating Manual Transmissions
If your truck has an automatic transmission, go to page
103.
6, 9, 10, and 11–Speed Manual
The 6–speed synchronized manual transmission has 6
forward speeds and 1 reverse. The 9–speed transmission
has 9 forward and 2 reverse speeds, consisting of a 5–
speed low range section and a 4–speed high range section.
For specific instructions on operating one of the optional
10- or 11-speed transmissions, consult the transmission
manufacturer’s Driver/Operator Instruction Manual.
– 98 – Y53-6027 Medium Duty (R05/09)