To make sure the emissions control
systems operate effectively, you should
have the services listed in the maintenance
schedule performed at the specified time
and mileage intervals. You should avoid
running out of fuel or turning off the ignition
when your vehicle is moving, especially at
high speeds.
Do not make unauthorized modifications
to the engine or vehicle. Modifications
causing increased amounts of unburned
fuel to reach the exhaust system can
significantly increase the temperature of
the engine compartment and the exhaust
system.
Avoid driving your vehicle if it does not
operate properly. If the engine diesels
(more than five seconds of engine run-on
after shut-off), misfires, surges, stalls or
backfires, see an authorized dealer. Be alert
for fluid leakage, odor, smoke, loss of oil
pressure, or charge indicator or over
temperature warning.
Vehicles equipped with a diesel engine
cannot use diesel fuel blended with waste
oil if equipped with a catalytic
converter-muffler. Waste lube oil blending
in fuel plugs the catalytic
converter-muffler, resulting in a significant
loss of engine power.
Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance
On January 1, 1978, Federal regulations
became effective governing the noise
emissions on trucks over 10000 pounds
(4536 kilograms) GVWR. The following
statements concerning prohibited
tampering acts and maintenance and the
noise warranty are found in the warranty
information, and are applicable to
completed trucks.
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 presumed to constitute
tampering are the following acts listed:
Acts
Vehicle system
Removal of noise shields, hood blanket, tunnel liner oracoustical absorptive material.
Acoustical shielding
Removal or rendering inoperative the engine speed
governor to allow engine speed to exceed manufacturer specifications. Removal of engine mounted noise shield or oil pan enclosure.
Engine
Removal of the air duct, silencer, air cleaner, and/or air
cleaner element and baffle in air cleaner; re-indexing of air cleaner.
Engine air induction
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F650750 (TBC), enUSA, First Printing Scheduled Maintenance
