PART 8: MAINTENANCE AND SERVICE
Tampering with Noise Control System Prohibited
(1) The removal or rendering inoperative by any person
other than for maintenance, repair, or replacement, of any
device or element of design incorporated into any new ve-
hicle for the purpose of noise control prior to its sale or de-
livery to the ultimate purchaser or while it is in use, or (2)
the operation of the vehicle after such device or element of
design has been removed or rendered inoperative by any
person.
Among those acts presumed to constitute tampering are
• Noise Insulating Blankets
Removing noise insulators from engine block or from
around the oil pan.
Cutting holes in, or cutting away part of, noise insula-
tors.
Removing hood-mounted noise insulation.
• Engine Electronic Control Unit (ECU)
Modifying ECU parameters.
• Engine Cooling System
Removing or rendering inoperative the fan clutch.
Removing the fan shroud.
• Air Intake System
Removing or rendering inoperative the air cleaner /
silencers or intake piping.
• Exhaust System
Removing or rendering inoperative the exhaust sys-
tem components.
• Inner Fender Shields and Cab Skirts
Removing shields or skirts.
Cutting away parts of shields, skirts or damaged or
loose portions of shields or skirts.
• Fuel System
Removing or rendering engine speed governor inoper-
ative, allowing engine speed to exceed manufacturer’s
speci
fi
cations.
Removing air signal attenuator on engines equipped
with this device.
R(08/07)
Y53-6015
– 191 –
Summary of Contents for Peterbilt 320
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Page 210: ...PART 11 SUBJECT INDEX Windshield Washer Reservoir 29 206 Y53 6015 R 08 07 ...
Page 212: ...Peterbilt Motors Company P O Box 90208 Denton Texas 76202 ...