Due to the number of various exhaust aftertreatment applications, this procedure has been written to be
generic. Not all illustrations within this procedure will represent the application being serviced.
The aftertreatment system is composed of four sections.
These sections are:
1 Inlet
2 Aftertreatment diesel oxidation catalyst
3 Aftertreatment diesel particulate filter
4 Outlet.
NOTE: In some applications, the aftertreatment diesel oxidation catalyst can be integrated into the inlet of the
exhaust aftertreatment system.
NOTE: In some applications, the aftertreatment diesel oxidation catalyst and the aftertreatment diesel particulate
filter will be contained within one canister. This procedure refers to this system as a “joined aftertreatment diesel
oxidation catalyst-aftertreatment diesel particulate filter”.
Aftertreatment systems with a joined aftertreatment diesel oxidation catalyst-aftertreatment diesel particulate filter
use three-bolt joint connections.
NOTE: If the aftertreatment diesel particulate filter is being replaced due to progressive damage from engine oil or
fuel, clean the tailpipe from the turbocharger outlet to the aftertreatment diesel oxidation catalyst, including the
aftertreatment inlet. Refer to Procedure 011-048 in Section 11.
