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

Anti-Lock Braking System Operating Information
PART 7: STARTING & OPERATING THE VEHICLE
1. Into the pinion cage, add 1 pint (.47 liter) of lubricant,
OR Into the inter-axle differential, add 2 pints (.94 liter)
of lubricant. See the Index, under Lubricant Specifications,
for the lubricant required by each axle.
2. After adding the specified type and amount of lubricant,
drive the vehicle. It should be unloaded. Drive 1
to 2 miles (1.5 to 3 km) at a speed lower than 25 mph
(40 km/h).
This will thoroughly circulate the lubricant through the assembly.
Anti-Lock Braking System Operating
Information
This vehicle may be equipped with an anti-lock braking
system (ABS). This ABS reduces the possibility of wheel
lock-up. If a wheel is about to lock during braking, the ABS
will automatically adjust air pressure to the brake chambers
on the appropriate wheel(s) to prevent wheel lock-up. The
ABS is automatically turned on when the ignition switch is
turned on.
WARNING!
• The brake system is a critical vehicle safety
system. For the safety of you and others
around you, have the vehicle submitted for
periodic preventive maintenance checks as
well as having any suspected problems immediately
checked by an Authorized Service
Center. Failure to properly maintain your
brake system can lead to serious injury accidents.
• 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 vehicle may
pull to the left or right when brakes are applied,
which could contribute to an accident.
– 88 – Y53-6015 R(08/07)