they will scratch painted, plated,
and polished metal surfaces.
3. Rinse painted surfaces with gentle
water pressure frequently while
washing to flush away dirt that
might scratch the finishes during
the washing operation.
4. Hose dirt and grime from the entire
chassis.
CAUTION
Do not direct high pressure water onto
seals or flexible hoses. Water may en-
ter the part which will contaminate the
system lubricants and fluids. To pre-
vent damage to these components,
keep a gentle flow of water moving at
all times. Failure to comply may result
in equipment damage.
CAUTION
Do not direct high pressure water onto
electrical components, plug connec-
tors, seals or flexible hoses on the en-
gine. Failure to comply can accelerate
corrosion and degrade electrical com-
ponent which may cause a fire or
equipment damage.
5. Wipe everything dry with a chamois
to avoid water spots. To prevent
water spotting, dry off the cosmetic
surfaces with a clean cloth or
chamois.
6. Remove road tar with an
automotive-type tar remover or
mineral spirits.
7. After cleaning and drying the entire
vehicle, apply a quality automotive
wax to protect the vehicle's finish.
Care of Display Screens on the
Dashboard
To clean the screen, dampen a clean, soft,
lint-free cloth with water only. A mild glass
cleaner that does not contain alcohol or
ammonia may also be used. Cleaners that
contain alcohol and/or ammonia will
eventually dry-out, crack and "yellow" the
screen. Wipe the screen gently back and
forth. You can also use a commercial
cleaner especially designed for LCD
screens.
Cab Structure, Doors and
Hoods
Lubricate the lower hood pivot (only if lube
fittings are present.)
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
MAINTENANCE - Cab Structure, Doors and Hoods
224 Y53-6076-1D1 (09/20)
5
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