PART 7: STARTING & OPERATING THE VEHICLE
PB1319 (CAT. NO. 5296 ) —92— 22-01691 (R02/02)
You can get to a repair facility if you do the following:
1. Remove the height control link rod that is connected to the axle
and to the height control valve control arm. This will cause the
valve’s control arm to center in the closed position.
2. Pump the air system to normal pressure for continued operation.
Driving Tips And Techniques
This section covers additional driving tips and techniques on how to
drive your Peterbilt more efficiently. For further information on driving
techniques, read the American Trucking Association's (ATA)
Truck
Driver’s Handbook
. It will give you more tips on starting, shifting, and
driving your vehicle.
Coasting
Do not coast with the transmission in neutral or with the clutch pedal
depressed. Besides being illegal and dangerous, coasting is also
expensive. It causes premature failure or damage to the clutch and
transmission and overloads the brake system.
Coasting with the transmission in neutral also prevents proper trans-
mission component lubrication. During coasting the transmission is
driven by the rear wheels, and the countershaft gear (which lubricates
the transmission components by oil splash) will only be turning at idle
speed.
WARNING! Low air pressure could make the brakes
unsafe for driving. Before driving the vehicle, make
sure the pressure does pump up to over 100 psi for nor-
mal brake operation. If the air pressure does not pump
up to at least 100 psi, don’t try to move the vehicle.
CAUTION: Operating a vehicle with air suspension bags
either overinflated or underinflated may cause damage
to driveline components. If a vehicle must be operated
under such conditions, do not exceed 5 mph.
WARNING! Do not coast with the transmission in neu-
tral or with the clutch pedal depressed—it is a danger-
ous practice. Without the use of the retarding power of
the drivetrain, your vehicle can reach dangerous
speeds. At very high speeds you may not be able to put
the transmission in any gear. At high speeds you could
seriously damage your vehicle or cause an accident
when you put the transmission in gear. The engine
speed could exceed the maximum governed speed and
cause a serious accident due to mechanical failures.
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