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Service bulletin SF-447A

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 id10043170
Published by NHTSA2012-02-29
Manufacturer's numberSF-447A
Manufacturer's date2011-12-01
NHTSA componentSTEERING:HYDRAULIC POWER ASSIST SYSTEM; STEERING:LINKAGES:ARM:IDLER AND ATTACHMENT

NHTSA's summary

DAIMLER TRUCK (FREIGHTLINER): ON RIGHT HAND STEERING ASSIST RAM, WHEN SUSPENSION IS EXTENDED, FULLY, IT MAY CONTACT FRONT SPRING HANGER CASTING, WHICH MAY FRACTURE RAM BALL STUD. WILL REPLACE RIGHT HAND FRONT SPRING HANGER. *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

Steering, Power steering, Tie rods and steering linkage

Vehicles listed
FREIGHTLINER BUSINESS CLASS M22007 to 2009
FREIGHTLINER COLUMBIA2007, 2008, 2009
FREIGHTLINER FLD2007 to 2009
STERLING L2007
STERLING L-LINE2007 to 2009
STERLING L95002007 to 2008

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

Recalls for the same vehicles and component
07V4030002007-09-06. STEERING:LINKAGES:TIE ROD ASSEMBLY
07V4000002007-09-05. STEERING:LINKAGES:TIE ROD ASSEMBLY

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SB-46-512011-08-05. Service bulletin. FREIGHTLINER: THERE IS A PROCEDURE TO REPLACE THE POWER STEERING PUMP. *RM
SB-46-472010-01-13. Service bulletin. FREIGHTLINER TRUCK: INNER TIE ROD INSPECTION AND REPAIR, RACK AND PINION GEAR. INCREASED LENGTH OF THE DRIVER SIDE INNER TIE ROD (IF THE INNER TIE ROD UNTHREADS FROM THE RACK) MAY CAUSE ABNORMAL STEER TIRE WEAR DUE TO HIGH TOE IN OR AN INABILITY TO MAINTAIN CORRECT TOE IN ADJUSTMENT. NO MODEL YEARS LISTED. *PE