Peterbilt 325 2017, Operator'S Manual, Page: 165 / 392

OPERATING THE BRAKE SYSTEM
WARNING!
The Anti-Lock Brake System is
a critical vehicle safety system.
For the safety of you and others
around you, have the vehicle sub-
mitted for periodic preventive main-
tenance checks as well as having
any suspected problems immedi-
ately checked by an authorized
dealer. Failure to properly maintain
your brake system can lead to se-
rious accidents. Failure to comply
may result in death, personal injury,
equipment or property damage.
WARNING!
Do not drive through water deep
enough to wet brake components,
as it may cause the brakes to work
less efficiently than normal.
The
vehicle's stopping distance may be
longer than expected, and the vehi-
cle may pull to the left or right when
brakes are applied, which could
contribute to an accident involving
death or personal injury.
WARNING!
Do not rely on an anti-lock brake sys-
tem that is functioning improperly.
You could lose control of the vehi-
cle resulting in a severe accident,
causing death or personal injury. If
your ABS lamp goes on while you
are driving or stays on after the self-
check, your anti-lock system might
not be working. The ABS may not
function in an emergency. You will
still have conventional brakes, but
not anti-lock brakes. If the lamp in-
dicates a problem, have the ABS
checked.
Vehicles without anti-lock brake
systems (ABS) are typically equipped
with a bobtail brake proportioning
system. When a trailer is not
connected, the drive axle brake
application pressure will automatically
be limited by the proportioning system.
When driven in a bobtail mode,
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