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Service bulletin SB-313006

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 id10032084
Published by NHTSA2010-02-13
Manufacturer's numberSB-313006
Manufacturer's date2009-08-06
NHTSA componentPOWER TRAIN:CLUTCH ASSEMBLY; POWER TRAIN:CLUTCH ASSEMBLY:BELL HOUSING; POWER TRAIN:CLUTCH ASSEMBLY:PEDAL/HAND LEVER(MOTORCYCLE)

NHTSA's summary

MACK TRUCK: AIR ASSIST CLUTCH CONVERSION. AIR ASSIST TO NON ASSIST CLUTCH CABLE CONVERSION. THE AIR OPERATED CLUTCH ASSIST SYSTEM WAS DESIGNED TO REDUCE CLUTCH PEDAL EFFORT BY APPROXIMATELY 20%, ALONG WITH REDUCING THE CLUTCH PEDAL TRAVEL BY 2" (50.8MM). NO MODEL YEARS LISTED. *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

Transmission and driveline, Clutch

Vehicles listed
MACK CHU2006 to 2008
MACK CTP2006 to 2008
MACK CXP2006 to 2008
MACK CXU2006 to 2008
MACK GU2006 to 2009

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