OPERATOR'S MANUAL

INTRODUCTION
Medium Duty
(R05/09) Y53-6027 – 7 –
Medium Duty Body Builders' Manual. Contains general
guidelines on mechanical and electrical modifications
required by your dealer to add bodies, accessories, and
special equipment to straight-truck configurations.
WARNING! Modifying your vehicle can make it
unsafe. Some modifications can affect your
vehicle's electrical system, stability, or other
important functions. Before modifying your
vehicle, check with your dealer to make sure it
can be done safely. Improper modifications
can cause death or personal injury.
Preventive Maintenance Section
The Preventive Maintenance section (pages 116 – 226) in
this manual contains general service information for the
operator, such as: lubrication points, making adjustments,
and other helpful service information. This is summary
information only, used for general maintenance of major
components installed on your Medium Duty. For detailed
service information see your Medium Duty Maintenance
Manual.
When it comes time for major service work, your Peterbilt
Dealer or Authorized Service Center will need vehicle and
component information. To help you gather this vehicle
information, see “Consumer Information and Vehicle Iden-
tification” on page 226. This section explains vehicle iden-
tification and provides space to record model and serial
numbers of major components installed on your vehicle.
Additional Sources of Information
Installed Equipment — Operator's Manuals
Major component suppliers to Peterbilt also supply opera-
tion manuals specific to their products. Additional manuals
and other pieces of literature are included in the glove
compartment literature set. Look for information on prod-
ucts such as the engine, driver’s seat, transmission, axles,
tires, and radio. If you are missing these pieces of litera-
ture, ask your Peterbilt Dealer for copies.
Other Sources
Another place to learn more about trucking is from local
truck driving schools. Contact one near you to learn about
courses they offer.
Federal and state agencies such as the department of
licensing also have information you can ask for. The
National Highway Traffic Safety Administration and the
Federal Motor Carrier Safety Administration can give you