Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...

PART 7: STARTING & OPERATING THE VEHICLE
WARNING! Do not leave the cab without applying
the parking brake. The truck could roll
and cause an injury accident. Always apply the
parking brake before you leave the cab. If your
vehicle has a Freedomline transmission, be
aware that it can roll backwards when stopped
on a hill or grade, or when starting from a stop
on a hill or grade. This could cause serious
damage or personal injury. Observe the following
guidelines:
• When stopped on a hill or grade, press the
brake pedal.
• When starting from a stop on a hill or grade,
quickly remove your foot from the brake
pedal and firmly press on the accelerator
pedal.
Auxiliary Transmission
If you have an auxiliary transmission, see your transmission
manufacturer’s manual for its proper operation.
If Your Vehicle Must Be Towed
If Your Vehicle Must Be Towed
Follow these directions to ensure your vehicle is not damaged
when towing is required.
1. Lift driving wheels off the ground or remove the driveline
and axle shafts before towing the vehicle.
CAUTION: Failure to lift the driving wheels
off the ground or remove the driveline and
axle shafts before towing the vehicle could
seriously damage your vehicle. All lubricating
and clutch application oil pressure is provided
by an engine-driven pump, which does
not work when the engine is stopped. When
vehicles are towed either by wrecker or piggyback,
lubricant in the top front of the drive
axle will drain to the rear. This will leave the
top components dry, resulting in friction that
will seriously damage these components.
2. Cover open hubs when removing drive axle shafts.
R(08/07) Y53-6015 – 85 –