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Service bulletin FSB 722-006A

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 id10083637
Published by NHTSA2016-10-27
Manufacturer's numberFSB 722-006A
Manufacturer's date2015-10-30
NHTSA componentSUSPENSION

NHTSA's summary

TWIN-Y SUSPENSION, U-BOLT, REPLACEMENT. FOR MACK SERVICE CENTERS OR DEALERS WHO ARE NOT EQUIPPED WITH HUCK BOLT TOOLS, USE U-BOLT (PART NUMBER 21759985) AND NUT (PART NUMBER 947971) WHEN REPLACING THE CURRENT TWIN-Y SUSPENSION U-BOLT.

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

Suspension

Vehicles listed
MACK MACK

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