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December 3, 2008 Service bulletin

Kenworth service campaign: top tank replacement for C500 and W900 with isx; field campaign. early design...

Kenworth technical service bulletin TIB-42-41 for 2006-2007 Kenworth W900 and 2006-2007 Kenworth C500.

Bulletin number
TIB-42-41
Component
Engine and engine cooling: cooling system: radiator assembly
Summary
Kenworth service campaign: top tank replacement for c500 and w900 with isx; field campaign. Early design top tanks on 1430 square inch radiators for 2007 emissions compliant engines can create coolant pump and/or exhaust gas recirculation (egr) cooler failures.

Owners of these vehicles have filed 3 complaints in the engine category.

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