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Service bulletin SP-652-004

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 id10034969
Published by NHTSA2011-02-02
Manufacturer's numberSP-652-004
Manufacturer's date2011-06-01
ReplacesSP-652-004-3
NHTSA componentSUSPENSION

NHTSA's summary

MACK TRUCK: TORQUE ROD RELOCATION FOR HN SUSPENSION. CERTAIN MODEL TRUCKS WITH HN SUSPENSION HAVE BEEN FOUND TO MAKE CONTACT WITH THE TORQUE ROD AT THE CARRIER ASSEMBLY BRACKET. *PE UPDATED 9/9/11. *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

Suspension

Vehicles listed
MACK MRU2007 to 2011

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