TSB170047-011820

Aftertreatment System Alignment Arrows Misaligned on Firetruck Applications
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Technical Service Bulletin
Technical Service Bulletin:
Released Date: 18-Jan-2018
TSB170047
Aftertreatment System Alignment Arrows Misaligned on Firetruck
Applications
Aftertreatment System Alignment Arrows
Misaligned on Firetruck Applications
Warranty Statement
The information in this document has no effect on present warranty coverage or repair
practices, nor does it authorize TRP or Campaign actions.
Contents
Products Affected:
•
•
•
•
B6.7 CM2350 B121B
L9 CM2350 L116B
X15 CM2350 X114B
X15 CM2350 X116B
OEMs Affected:
• Pierce
• Vanhool
Issue
This document describes required misalignment of aftertreatment alignment arrows only
on firetruck applications.
Verification
Alignment arrows on aftertreatment diesel particulate filter (DPF) and aftertreatment
decomposition tube are intentionally misaligned by approximately 10 degrees. See
Figure 1 below.
https://qsol.cummins.com/qs3/pubsys2/xml/en/tsb/2017/tsb170047.html
1/22/2018
Aftertreatment System Alignment Arrows Misaligned on Firetruck Applications
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Figure 1, Alignment Arrows.
Resolution
 CAUTION 
If aftertreatment DPF and aftertreatment decomposition tube alignment arrows are
in alignment, differential pressure sensor tube connected to aftertreatment
decomposition tube will not fit properly and can become kinked and/or bent.
• Misalignment of aftertreatment DPF and aftertreatment decomposition tube is
required to allow for adequate aftertreatment system clearance in this application.
• Prior to loosening or removal of aftertreatment v-band clamp, aftertreatment DPF, or
aftertreatment decomposition tube; an orientation reference line must be drawn
across aftertreatment DPF, v-band clamp, and decomposition tube to aid in
assembly.
• Use orientation reference lines added prior to loosening or removal to assist in
correct differential pressure sensor tube alignment during assembly.
Document History
Date
Details
https://qsol.cummins.com/qs3/pubsys2/xml/en/tsb/2017/tsb170047.html
1/22/2018
Aftertreatment System Alignment Arrows Misaligned on Firetruck Applications
Date
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Details
2017-4-7
Module Created
2018-1-18
Added affected OEMs
Last Modified: 18-Jan-2018
https://qsol.cummins.com/qs3/pubsys2/xml/en/tsb/2017/tsb170047.html
1/22/2018