PART 8: MAINTENANCE AND SERVICE AIR INTAKE SYSTEM
(R10/06) Y53-6007 – 189 –
Under severe operating conditions, such as heavy off-
highway use, the disassembly and cleaning should be
more frequent. Replace any defective parts. With the pos
-
sible exception of mounting brackets, don’t repair defec-
tive parts.
Air Cleaners
The following service information is basic to all air cleaner
makes and models.
Service the air cleaner filter elements as specified in the
Preventive Maintenance Schedule. If your vehicle is
equipped with an optional air inlet restriction indicator, ser
-
vice the filter elements when the air inlet restriction indica-
tor locks in the extreme Up position. Paper elements
require care and proper handling because they are critical
to engine service life.
Turbocharger
When servicing the air intake and exhaust systems on a
turbocharged engine, check the items that follow. If you
detect any deficiencies, take the vehicle to an authorized
dealer for servicing. Delay could lead to severe and
expensive damage to your vehicle.
WARNING! The exhaust piping, muffler, con-
verter muffler or independent converter
become extremely hot during engine opera
-
tion and can cause serious burns to the skin.
Allow adequate cooling time before working
on or near any part of the exhaust system.
WARNING! If your vehicle becomes disabled,
the hot exhaust system could ignite dry
grass, brush, spilled fuel, or other material
that can cause fires. Do not park or operate
your vehicle in areas where the hot exhaust
system could cause a fire.
CAUTION: This truck may be equipped with a
converter muffler or independent converter
unit in order to meet both noise and exhaust
emissions requirements. Removal or tamper
-
ing with the converter muffler or independent
converter will not improve engine perfor
-
mance. Also tampering is against the rules
that are established by the U.S. Code of Fed
-
eral Regulations. The converter muffler or
independent converter may only be replaced
with an approved part.
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