operators_manual

instructions very closely. It is vitally
important that all components be
reinstalled in the same position as the
original components that were removed
and that the fasteners be torqued to
specification. This will maintain the design
integrity of the mounting points for the seat
belt assembly
. Contact your dealer if you
have any questions concerning seat belt
replacement.
Cooling System
Maintenance
The cooling system in your vehicle was
factory filled with extended life coolant that
meets or exceeds all ASTM D6210 and
Caterpillar EC-1 requirements. PACCAR
recommends only using a 50:50 mixture of
distilled water and ELC when cooling
system service is required. A 50:50 mixture
of ELC and distilled water will provide
freeze protection down to -34°F (-36.7°C),
which is adequate for most locations in
North America. For extremely cold
operating conditions, a 60:40 mixture
(coolant/water ratio) can be used to
provide freeze protection down to -62°F
(-52.2°C).
Unless otherwise optioned, factory fill
coolant is an ethylene glycol, nitrited
organic acid technology (NOAT) extended
life coolant (ELC) formulation at a 50:50
coolant-to-distilled water mixture. The
factory fill exceeds ASTM D6210 and
Caterpillar EC-1 requirements. Maintaining
coolant chemistry and freeze protection is
critical to engine and cooling system
component health and longevity.
WARNING
Coolant is toxic. DO NOT get the fluid
in
eyes. If contact occurs, flood eyes
with large amounts of water for 15 mi-
nutes. Avoid prolonged or repeated
contact with skin. In case of contact,
immediately wash skin with soap and
water. DO NOT take internally. If swal-
lowed, seek immediate medical atten-
tion. DO NOT induce vomiting. Failure
to comply may result in death, person-
al injury, equipment or property dam-
age.
CAUTION
The engine cooling system has very
specific
maintenance and inspection
requirements. Failure to follow require-
ments can damage the engine. Engine
damage can include but is not limited
to freezing, boiling, corrosion, pitted
cylinder liners. This information is
found in the engine manufacturers
owner’s manual. It is the owner’s re-
sponsibility to follow all requirements
listed in the engine manufacturers
owner’s manual.
NOTE
Coolant is harmful to the environment.
Unused
coolant must be stored as a
toxic hazardous material in leakproof
containers. Used coolant must be
processed as industrial chemical
waste. Please follow HAZMAT guide-
lines with both used and unused cool-
ants.
MAINTENANCE - Cooling System Maintenance
252 Y53-6110-1A1 (01/21)
5