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Service bulletin SB-46-51

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 id10039609
Published by NHTSA2011-08-05
Manufacturer's numberSB-46-51
Manufacturer's date2011-05-01
NHTSA componentSTEERING:HYDRAULIC POWER ASSIST:PUMP; ENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

FREIGHTLINER: THERE IS A PROCEDURE TO REPLACE THE POWER STEERING PUMP. *RM

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

Engine, Steering, Power steering

Vehicles listed
FREIGHTLINER BUSINESS CLASS
FREIGHTLINER BUSINESS CLASS M22006 to 2011
FREIGHTLINER CENTURY CLASS2006 to 2010
FREIGHTLINER COLUMBIA2006, 2007, 2008, 2009, 2010, 2011

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

Other bulletins for the same vehicles and component
SF-447A2012-02-29. Service bulletin. 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