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Service bulletin SB-214-024

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10037488
Published by NHTSA2011-05-24
Manufacturer's numberSB-214-024
Manufacturer's date2010-11-01
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

NHTSA's summary

MACK TRUCKS: IF THERE IS A FAILED OUTER VALVE SPRING THERE IS A REPLACEMENT PROCEDURE. *RM

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Equipment and accessories, Exhaust and emissions, Labels and manuals

Vehicles listed
MACK CHU2010
MACK CTP2006 to 2008
MACK CXP2006 to 2008
MACK CXU2010
MACK GRANITE (GU)2012
MACK GU2010 to 2011
MACK LEU2010 to 2012
MACK MRU2010 to 2012
MACK PINNACLE (CHU)2011 to 2012
MACK PINNACLE (CXU)2011 to 2012
MACK TD2012
MACK TD7132010
MACK TD7142009 to 2010

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