Service bulletin SB 3077

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 affected customers that MCI was notified by Shaw Development that the diesel exhaust fluid (DEF) tank cap requires routine cleaning to prevent the potential for crystallization build up at the vent, which may result in potential vacuum issues which could result in collapsing of the tank walls on MCI D model coaches, MCI E4500 model coaches and MCI J4500 model coaches.

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

Engine, Equipment and accessories, Exhaust and emissions

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

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