WARNING:
Do not remove or alter the original equipment floor
covering or insulation between it and the metal floor of the
vehicle. The floor covering and insulation protect occupants of the
vehicle from the engine and exhaust system heat and noise. On
vehicles with no original equipment floor covering insulation, do not
carry passengers in a manner that permits prolonged skin contact with
the metal floor. Provide adequate insulation. Failure to follow these
instructions may result in fire or personal injury.
Tampering with emissions control systems (including related sensors and
the diesel exhaust fluid (DEF) injection system) can result in reduced
engine power and the illumination of the service engine soon light
.
NOISE EMISSIONS WARRANTY, PROHIBITED TAMPERING ACTS
AND MAINTENANCE
On January 1, 1978, Federal regulation became effective governing the
noise emission on trucks over 10,000 lbs. (4,536 kg) GVWR (Gross
Vehicle Weight Rating). The following statements concerning prohibited
tampering acts and maintenance, and the noise warranty found in the
Warranty Guide
, are applicable to complete chassis cabs over
10,000 lbs. (4,536 kg) GVWR.
Tampering with noise control system prohibited
Federal law prohibits the following acts or the causing thereof: (1) The
removal or rendering inoperative by any person other than for purposes
of maintenance, repair or replacement of any device or element of design
incorporated into any new vehicle for the purpose of noise control prior
to its sale or delivery to the ultimate purchaser or while it is in use, or
(2) the use of the vehicle after such device or element of design has
been removed or rendered inoperative by any person.
Among those acts which the U.S. Environmental Protection Agency may
presume to constitute tampering are the acts listed below:
•
Removal of hood blanket, fender apron absorbers, fender apron
barriers, underbody noise shields or acoustically absorptive material.
•
Tampering or rendering inoperative the engine speed governor, so as
to allow engine speed to exceed manufacturer’s specifications.
The complexity of the diesel engine makes it so the owner is discouraged
from attempting to perform maintenance other than the services
described in this supplement.
Maintenance and Specifications
60
2011 Diesel
(eco)
Supplement, 5th Printing
USA
(fus)
