Regional Haul Model Operator's Manual - Peterbilt Motors Company

STARTING AND OPERATING THE VEHICLE
• If very rapidly winding steering inputs are inputted at
high speeds,
• There are mechanical problems with suspension leveling
of the tractor or trailer resulting in uneven loads,
• The vehicle is maneuvering on a high banked road
creating either additional side forces due to the weight
(mass) of the vehicle or a deviation between expected
& actual yaw rates,
• Gusty winds are strong enough to cause significant
side forces on the vehicle and any towed vehicles.
To Maximize The Effectiveness Of ESP:
• Loads must be properly secured and evenly distributed
at all times.
• Drivers need to exercise extreme caution at all times,
and avoid sharp turns, sudden steering inputs or
abrupt lane changes at high speeds, particularly if:
– the vehicle hauls loads that could shift,
– the vehicle or load has a high or off-set center of
gravity (CG) when loaded, or
– the vehicle tows doubles or triples.
ADVANCED ABS WITH STABILITY CONTROL
Truck Chassis Modifications
The ESP system was specifically calibrated and validated
only for your vehicle’s original factory-built configuration. If
your vehicle’s chassis components are altered (for example;
a wheelbase extension or reduction, tag axle addition
or removal, tractor to truck conversion or steering system
component change) the ESP system must be disabled
immediately by a qualified mechanic.
WARNING! Failure to disable ESP “Electronic
Stability Program” when modifying a vehicle
could result in a loss of vehicle control possibly
resulting in death or severe personal
injury.
WARNING! For vehicles equipped with ESP
“Electronic Stability Program” do not replace
the vehicle’s steering wheel. Using a different
steering wheel could cause ESP to malfunction
causing a loss of vehicle control possibly
resulting in death or severe personal injury.
Steering Angle Sensor Re-Calibration
Whenever maintenance or repair work is performed to the
steering mechanism, linkage, gear, adjustment of the
Regional Haul (R05/10) Y53-6033 – 123 –