Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...

Inspection & Maintenance Instructions for Noise Control System
PART 8: MAINTENANCE AND SERVICE
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 component.
Exhaust System
NOTE: Vehicles with engines built to meet 2007
EPA Emission Requirements also have a Diesel
Particulate Filter (DPF). Use only an exact replacement
DPF in exhaust systems. Using a noncompliant
DPF as a replacement could violate these
standards and also void the emission system’s warranty.
Turbo/Emission Control Components
The vehicle may have emission control components to
meet 2007 EPA requirements. Refer to the engine manufacturer’s
service manual for the maintenance of these
components.
Joints and Clamps
Check for leaks, and tighten as necessary. Check for deterioration
or dents in pipes and clamps which could allow
exhaust to escape.
Piping
NOTE: The EPA requires 2007 compliant vehicles
to have a leak free exhaust system. Replace components
as necessary to ensure EPA compliance.
Check for rust, corrosion, and damage. Replace any piping
if it is perforated at any point. Temporary patching or
lagging is not acceptable.
NOTE: The EPA requires 2007 compliant vehicles
to have a leak free exhaust system. Replace exhaust
piping as necessary to ensure EPA compliance.
– 192 – Y53-6015 R(08/07)