Service bulletin SB 424

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.

NHTSA's summary

This Service Bulletin informs customers that MCI was notified by Cummins Inc. that it has released Campaign C1638 that addresses the ISX lubricating oil filter bypass valve in addition to the previous fuel pump repair actions outlined in MCI SB 419 and Cummins FCP C1556 on model year 2008-2013 MCI D model coaches and model year 2011-2014 MCI J4500 model coaches. This program is being performed only by Cummins Service Network and its authorized dealers, therefore, all parts and labor required for this program will be provided by Cummins.

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Fuel system

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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