# Service bulletin TSB150089\-102020

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10123202
- Published by NHTSA: 2017\-11\-14
- Manufacturer's number: TSB150089\-102020
- Manufacturer's date: 2017\-10\-23
- NHTSA component: FUEL SYSTEM, DIESEL

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of some cases in which the aftertreatment Diesel Exhaust Fluid \(DEF\) dosing lines are not being fully purged during the purge cycle. This can result in internal cracking of the aftertreatment DEF dosing unit and leakage of DEF. A revised backflow connector for the Bosch® aftertreatment DEF dosing unit has been released and will help to fully purge DEF from the DEF dosing lines and aftertreatment DEF dosing unit during the purge cycle. This is a revision to a previous communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10123202-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10123202-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Fuel system

## Vehicles listed

- CUMMINS ISB6.7
- CUMMINS ISC
- CUMMINS ISL9
- CUMMINS ISX11.9
- CUMMINS ISX12
- CUMMINS ISX15

JSON: [/v1/bulletins/10123202](/v1/bulletins/10123202)

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