NOTE:
Slight noise and mild shuddering may be evident while
turning a vehicle with limited slip differential on con-
crete or dry pavement. These conditions should be con-
sidered normal operation of the limited slip differential.
TRANSFER CASE
Fluid Level Check
This fluid level can be checked by removing the filler
plug. The fluid level should be to the bottom edge of the
filler plug hole with the vehicle in a level position.
Drain And Refill
For the proper maintenance intervals page 279.
Selection Of Lubricant
Use only the manufacturer's recommended fluid
page 340.
NOISE CONTROL SYSTEM
REQUIRED MAINTENANCE &
WARRANTY
All vehicles built over 10,000 lb (4,535 kg) Gross
Vehicle Weight Rating and manufactured for sale and
use in the United States are required to comply with the
Federal Government's Exterior Noise Regulations.
These vehicles can be identified by the Noise Emission
Control Label located in the operator's compartment.
Required Maintenance For Noise Control
Systems
The following maintenance services must be performed
every six months or 7,500 miles (12,000 km) which-
ever comes first, to ensure proper operation of the
noise control systems. In addition, inspection and ser-
vice should be performed anytime a malfunction is
observed or suspected. Proper maintenance of the
entire vehicle will help the effectiveness of the noise
control systems.
Exhaust System
Inspect the entire exhaust system for leaks and dam-
aged parts. Devices such as hangers, clamps, and
U-bolts should be tight and in good condition. Damaged
components, burned or blown out mufflers, burned or
rusted out exhaust pipes should be replaced according
to the procedures and specifications outlined in the
appropriate service manual.
Air Cleaner Assembly
Inspect air cleaner housing for proper assembly and fit.
Make certain that the air cleaner is properly positioned
and that the cover is tight. Check all hoses leading to
the air cleaner for tightness. The air filter element must
also be clean and serviced according to the instructions
outlined in the Scheduled Maintenance section of this
manual.
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:
AIR CLEANER
•
Removal of the air cleaner.
•
Removal of the air cleaner filter element from the air
cleaner housing.
•
Removal of the air ducting.
EXHAUST SYSTEM
•
Removal of, or rendering inoperative exhaust sys-
tem components including the muffler or tailpipe.
ENGINE COOLING SYSTEM
•
Removal of, or rendering inoperative the fan clutch.
•
Removal of the fan shroud.
SERVICING AND MAINTENANCE 303
8
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