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November 8, 2011 Service bulletin

Kenworth: information regarding rear nox sensor repairs should include system updates for chassis...

Kenworth technical service bulletin TIB-43-23 for 2009-2011 Kenworth T800, 2009-2011 Kenworth W900 and 2009-2011 Kenworth T660 and others.

Bulletin number
TIB-43-23
Component
Engine and engine cooling: exhaust system
Summary
Kenworth: information regarding rear nox sensor repairs should include system updates for chassis operating in conditions which result in moisture related sensor failures with improved moisture protection exhaust design for rear nox sensor.

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