PART 8: MAINTENANCE AND SERVICE NOISE CONTROL SYSTEM
(R10/06) Y53-6007 – 201 –
Inspection & Maintenance Instructions for
Noise Control System
The following instructions are based on regular inspection
of the noise control system. If, during regular inspection or
maintenance of other systems or components, you find
something wrong with parts of the noise control system,
inspect those parts more frequently to be sure they are
performing up to specification. At the end of this section
you will find the Maintenance Log. This is a schedule of
inspection and maintenance intervals for each compo
-
nent.
Exhaust System
Manifold
Check for exhaust leaks and condition of gaskets.
Replace any blown gaskets. Use a torque wrench to
check all cap-screws, including those at the flanges. Refer
to the engine manufacturer’s service manual for proper
tightening sequence and torque values.
Joints and Clamps
Check for leaks, and tighten as necessary. Check for dete-
rioration or dents in pipes and clamps which could allow
exhaust to escape.
Piping
Check for rust, corrosion, and damage. If piping is perfo-
rated at any point, temporary patching or lagging is
acceptable until you can have permanent repairs made.
On turbocharged engines check joints at the flanges and
mounting brackets for tightness.
Mufflers
NOTE: Use only exact replacement components
in exhaust systems. Certain components contain
integral catalytic converters essential for compli
-
ance with EPA emission standards. Using a non-
compliant component as a replacement could
violate these standards and also void the emis
-
sion system’s warranty.
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