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December 15, 2010 Service bulletin

Paccar: engineering standards have changed and there are now engines with heat treated bolts. rm

Kenworth technical service bulletin TIB-E011 for 1990-2012 Kenworth T800, 1990-1991, 1994-2012 Kenworth W900 and 2002-2012 Kenworth T660 and others.

Bulletin number
TIB-E011
Component
Engine and engine cooling: exhaust system
Summary
Paccar: engineering standards have changed and there are now engines with heat treated bolts. Rm

Owners of these vehicles have filed 13 complaints in the engine category.

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