TSB200034-021920

Service Bulletin Details

Public Details for: TSB200034-021920

This technical service bulletin describes the verification and resolution of diesel exhaust fluid doser overheating due to hot engine air around the dosing units. This issue is specific to one oem's specific chassis and the resolution is b


- 9999 -

Models from 9999
9999 CUMMINS L9 
2/21/2020
FC2976 on New Flyer™ Applications
Technical Service Bulletin
Technical Service Bulletin: TSB200034
FC2976 on New Flyer™ Applications
Released Date: 19-Feb-2020
FC2976 on New Flyer™ 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.
Information Only - OEM Related Matter Not Covered By Cummins® - Contact Appropriate OEM
Dealer or OEM Representative For Additional Information
Contents
Product Affected
L9 CM2350 L123B (New Flyer™ only)
Issue
Symptom:
Active or inactive FC2979 on New Flyer™ transit units.
Root Cause:
The Aftertreatment DEF Dosing Unit overheats due to hot engine air around the
Aftertreatment DEF Dosing Unit during vehicle operation.
Resolution
New Flyer™ has released a newly designed Aftertreatment DEF Dosing Unit cover assembly that
insulates the Aftertreatment DEF Dosing Unit from hot engine air.
Service Instructions
Contact the original equipment manufacturer (OEM) New Flyer™ for repair instructions. Reference
New Flyer™ Instruction to Service ITS58760.
Document History
Date
2020-2-19
Details
Module Created
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2020/tsb200034.html
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2/21/2020
FC2976 on New Flyer™ Applications
Last Modified: 19-Feb-2020
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2020/tsb200034.html
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