Peterbilt Medium Duty Trucks Operator's Manual after 1-07

Operating Instructions
Release Bearing Wear
When you must idle your engine for any period of time, shift
your transmission to Neutral and disengage the clutch (take
your foot OFF of the pedal). This helps prevent unnecessary
wear to your clutch release bearing, and it is less tiring for
you, too.
Clutch Adjustment
Inspect manual clutches according to the manufacturer's recommendations.
Regular maintenance should be followed to
maintain correct clutch adjustment. Have your dealer's Service
Department perform any adjustment necessary.
Tips
• Always use the clutch when making upshifts or downshifts.
• Always select a starting gear that will provide sufficient
gear reduction for the load and terrain.
• Never downshift when the vehicle is moving too fast.
Operating the Transmission
• Never slam or jerk the shift lever to complete gear
engagement.
• Never coast with the transmission in Neutral and the
clutch disengaged.
• To provide smooth gear engagements while shifting, use
proper coordination between shift lever and clutch.
Operating Automatic Transmissions
An automatic transmission makes shifting much easier,
however it is important to understand how to operate the
transmission efficiently. Please read the transmission
manufacturer’s operation manual supplied with your vehicle.
There may not be a “park” position with your automatic
transmission. Always be sure you apply the parking brake
before leaving the cab.
WARNING! Do not leave the cab of your vehicle
without applying the parking brake. The truck
could roll and cause an injury accident. Always
apply the parking brake before you leave the cab.
Medium Duty (R10/06) Y53-6008 – 71 –