Operator`s manual

SAFETY INFORMATION
39
The safe operation of this vehicle is determined by you, the driver.
Because of your special preferences, needs and circumstances, you
may choose to add extra mirrors and/or other visibility enhancement
devices. If so, contact an authorized Volvo Truck dealer to obtain parts
which best fit your personal needs and preferences.
Operating in Bobtail Mode
When operating bobtail, be certain that glad hands,
trailer air hoses, electrical cable and connectors are
properly stowed and secure. Do not allow them to rub
or chafe on other components.
Depending on customer specification, some tractors may be equipped
with a bobtail air brake proportioning valve which automatically
redistributes the braking force between front and rear axles when not
hooked up to a semitrailer (bobtail operation).
When operating in bobtail mode, the rear brake chambers receive
reduced or proportional brake air pressure. When the tractor is towing
a trailer, the rear brake chambers will receive full (normal) brake
pressure. For tractors with no proportioning valve, the ABS system
automatically controls brake pressure.
DO NOT Overload
Under no circumstances should the published
GVWR, FAWR, and/or RAWR be exceeded. Failure
to observe these precautions can lead to the loss
of vehicle control, resulting in a vehicle accident
causing serious personal injury or death.
vn-vhd.bk Page 39 Tuesday, July 1, 2008 9:44 AM