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Noise Emission Controls Maintenance: 00–09
Noise Emission Control
Maintenance
Federal Law, Part 205:
Transportation Equipment Noise
Emission Controls
Part 205, Transportation Equipment Noise Emission
Controls, requires the vehicle manufacturer to fur-
nish, with each new vehicle, such written instructions
for the proper maintenance, use, and repair of the
vehicle by the ultimate purchaser to provide reason-
able assurance of the elimination or minimization of
noise-emission-control degradation throughout the
life of the vehicle. In compliance with the law, the
noise emission controls maintenance information in
each applicable group of this manual, in conjunction
with the vehicle workshop manual, provides these
instructions to owners.
Recommendations for
Replacement Parts
Replacement parts used for maintenance or repair of
noise emission controls should be genuine Freight-
liner parts. If other than genuine Freightliner parts
are used for replacement or repair of components
affecting noise emission control, the owner should be
sure that such parts are warranted by their manufac-
turer to be equivalent to genuine Freightliner parts in
performance and durability.
Freightliner Noise Emission
Controls Warranty
Refer to the vehicle owner's warranty information
book for warranty information concerning noise emis-
sion controls.
Tampering with Noise Controls is
Prohibited
Federal law prohibits the following acts or the caus-
ing thereof:
1. The removal or rendering inoperative by any per-
son (other than for purposes of maintenance,
repair, or replacement) of any device or element
of design incorporated into any new vehicle for
00/16
the purpose of noise control, prior to its sale or
delivery to the ultimate purchaser, or while it is in
use.
2. The use of the vehicle after such device or ele-
ment of design has been removed or rendered
inoperative by any person.
Among those acts presumed to constitute tam-
pering are the acts listed below:
A. Removal of engine noise-deadening panels.
B. Removal of cab-tunnel or hood noise-
deadening panels.
C. Removal of, or rendering inoperative, the en-
gine speed governor so as to allow engine
speed to exceed manufacturer's specifica-
tions.
D. Removal of, or rendering inoperative, the fan
clutch, including bypassing the control on
any thermostatic fan drive to cause it to op-
erate continuously.
E. Removal of the fan shroud.
F. Removal of, or rendering inoperative, ex-
haust components, including exhaust pipe
clamping.
G. Removal of air intake components.
Maintenance Instructions
Scheduled intervals are in the maintenance tables in
this group. A "Verification of Inspections Log" for
Groups 20 and 49 follows, and should be filled in
each time noise emission controls on the vehicle are
maintained or repaired.
Cascadia Maintenance Manual, August 2015
General Information
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