Preventive Maintenance Introduction
Medium Duty
(R10/06) Y53-6008 – 117 –
• When working underneath the vehicle without
appropriate safety stands but with the wheels on the
ground (not supported), make sure that (1) the vehi-
cle is on hard level ground, (2) the parking brake is
applied, (3) all wheels are chocked (front and rear)
and (4) the engine cannot be started. Remove the
ignition key.
• Never start or let the engine run in an enclosed,
unventilated area. Exhaust fumes from the engine
contain carbon monoxide, a colorless and odorless
gas. Carbon monoxide can be fatal if inhaled.
WARNING! Wear protective clothing when
handling
hydraulic fluid. It is mildly toxic and
can cause skin and eye irritation.
CAUTION: Hydraulic brake fluid may damage
painted surfaces of the vehicle.
Incomplete or improper servicing may cause problems in the
operation of the vehicle. If in doubt about any servicing, have
it done by your Authorized Service Center. Improper mainte-
nance during the warranty period may also affect the war-
ranty coverage.
Modifying your vehicle can make it unsafe. Some modifica-
tions can affect your vehicle's electrical system, stability, or
other important functions. Before modifying your vehicle,
check with your Peterbilt Dealer to make sure it can be done
safely and correctly.
Environmental Protection and Material
Hazards
Some of the ingredients in engine oil, hydraulic oil, transmis-
sion and axle oil, engine coolant, diesel fuel, air conditioning
refrigerant (R–134a and PAG oil), batteries, etc., may con-
taminate the environment if spilled or not disposed of prop-
erly. Non-compliance with environmental regulations can
result in fines and/or jail terms. Contact your local govern-
ment agency for information concerning proper disposal.
WARNING! Diesel engine exhaust and some of
its constituents are known to the State of Cali-
fornia to cause cancer, birth defects, and other
reproductive harm. Other chemicals in this vehi-
cle are also known to the State of California to
cause cancer, birth defects, and other reproduc-
