operators_manual

Table Of Contents
Removing or rendering engine
speed governor inoperative so
as to allow engine speed to
exceed manufacturer's
specifications.
Modifying ECU parameters.
Exhaust System
Removing or rendering
inoperative exhaust system
components.
Fuel System
Removing or rendering engine
speed governor inoperative,
allowing engine speed to
exceed manufacturer's
specifications.
Removing of air signal
attenuator on engines
equipped with this device.
Removing of diesel exhaust
fluid tank and system.
Inner Fender Shields and Cab
Skirts
Removing shield or skirts.
Cutting away parts of shields,
skirts or damaged or loose
portions of shields or skirts.
Noise Insulating Blankets
Removing noise insulators
from engine block or from
around the oil pan.
Cutting holes in, or cutting
away part of noise insulators.
Removing hood-mounted noise
insulation.
Inspecting Noise and Emission
Components
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.
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 219.
Air Intake System
Do all checks and maintenance
procedures listed in this manual
under Engine Air Intake System and
Air Cleaner.
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
MAINTENANCE - Noise and Emission Control
200 Y53-6096-1A1 (01/17)
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