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Service bulletin FSB-511-002

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 id10056560
Published by NHTSA2014-12-31
Manufacturer's numberFSB-511-002
Manufacturer's date2014-08-01
NHTSA componentSERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:SHOES/LININGS; SERVICE BRAKES, AIR:DRUM:SHOES/LININGS

NHTSA's summary

MACK: THE PROTRUSION OF BRAKE SHOES BEYOND BRAKE DRUM IS BEING REPLACED WITH NEW 152MM (6.0 IN) BRAKES SHOES, 178 MM (7.,0 IN) WIDE BRAKE DRUMS ON SOME TRUCKS. MODEL 2011-2014 CHU, CXU, GU, TD. *PE

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

Brakes, Brake drums and shoes

Vehicles listed
MACK CHU2013 to 2014
MACK GRANITE (GU)2012 to 2014
MACK GU2011
MACK PINNACLE (CHU)2011 to 2012
MACK PINNACLE (CXU)2011 to 2014
MACK TD2011 to 2014

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