If the aftertreatment diesel particulate filter is being removed for an ash cleaning or soot cleaning maintenance interval, the aftertreatment diesel particulate filter will need to be removed and cleaned with a cleaning
tool approved by Cummins Inc. consult service tool instructions, Bulletins 3400284 and 3400253, for information regarding parts and operation of Cummins Inc. approved cleaning tools. Conventional cleaning methods can not be used to clean aftertreatment diesel particulate filters.
Because it can be difficult to determine if an aftertreatment diesel particulate filter is plugged with ash or soot, it will
be necessary to clean the aftertreatment diesel particulate filter before performing a stationary regeneration, to
prevent any system damage from occurring. Use the following procedure for information on how to perform a
stationary regeneration. Refer to Procedure 014-013 in Section 14.
Performing the ash and/or soot cleaning procedure will:
• Remove excess soot to allow a stationary regeneration without damaging the aftertreatment diesel particulate filter
• Allow the aftertreatment diesel particulate filter to be reused after Fault Code 1922 occurs
• Remove excess ash and improve regeneration frequency. It is possible for ash accumulation to occur due to excessive oil comsumption or poor fuel quality.
Ash often will accumulate on the aftertreatment diesel particulate filter face as a gray or orange powdery substance. An indicator of ash accumulation in the filter is an almost immediate illumination of the diesel particulate filter lamp after an automatic or stationary regeneration takes place.
Performing a stationary regeneration after cleaning the aftertreatment diesel particulate filter for ash and/or soot will :
• Remove any residual soot from the system that was not removed during the cleaning procedure
• Test the diesel oxidation catalyst efficiency
• Test the aftertreatment system functionality.
NOTE: Soot will plug the cleaning machine filter quicker than ash. Cleaning soot from a diesel particulate filter
using Cummins Inc. approved machines can result in the need for shorter maintenance intervals for the cleaning
machine filter.
