Peterbilt 325 2017, Operator'S Manual, Page: 334 / 392

NOISE AND EMISSION CONTROL
Inspection and Maintenance
Instructions
The following instructions are based on
inspection of the noise control system
at regular intervals as indicated in the
Noise Control System Maintenance
Log on page 5-130.
If, during periodic inspection and
maintenance of other systems and
components, it is found that parts of the
noise control system require attention,
we recommend that those parts be
inspected at more frequent intervals
to assure adequate maintenance and
performance.
Air Intake System
•
Do all checks and maintenance
procedures listed in this manual
under Engine Air Intake System
and Air Cleaner. See Air Dryer on
page 5-57.
•
Check the induction tubing, elbow
connections, clamps, brackets,
and fasteners for deterioration,
cracks, and security.
•
If you find an air leak anywhere
between the air cleaner and
the engine, repair that leak
immediately.
CAUTION
Air leaks cause excessive noise and
may result in serious damage to the
engine. If you do not repair them the
engine damage will not be covered
by your warranty. Repair all air leaks
as soon as you find them.
Engine Mounted Noise Insulators
•
Check condition. Is the insulator
secure? How you do this will
depend on the method of attaching
the noise insulators on the engine
and around the oil pan (bolts,
snap fasteners, or straps). Tighten
loose fasteners and repair or
replace any worn or damaged
fasteners.
•
Check insulators around fasteners
and stress points, especially
where they may be affected by
engine vibration. Repair any
cracked or damaged mounting
points. Use suitable reinforcing
plates to ensure that the insulators
will remain in position.
5-124
Y53-6060-1C1 (03/17)
5