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Service bulletin sb4271

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 id10120471
Published by NHTSA2017-10-21
Manufacturer's numbersb4271
Manufacturer's date2014-11-01
NHTSA componentPOWER TRAIN:AXLE ASSEMBLY

NHTSA's summary

sb4271 Rear Axle S-Cam Support Bracket Replacement

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline, Axle

Vehicles listed
FREIGHTLINER CASCADIA2011, 2012, 2013, 2014, 2015

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

Recalls for the same vehicles and component
16V6340002016-08-31. POWER TRAIN:AXLE HUBS
14V2420002014-04-29. POWER TRAIN:AXLE ASSEMBLY
13V5380002013-10-30. POWER TRAIN:AXLE 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
SF4712018-06-11. Service bulletin. SF471-DLR Detroit Axles Driver-Controlled Differential Locks
ICI13-0092018-06-11. Service bulletin. ICI13-009-DLR Campaign Claims for Detroit Axle
SF4882018-01-05. Service bulletin. SF488-DLR Airliner 69K Axle Stops
FL6622017-11-17. Service bulletin. FL662.-DLR Meritor MSF12 Non-Conforming Front Axle Beams
FL7182017-06-01. Service bulletin. FL718 FRONT AXLE HUB RATING
SF-471-AB2013-04-03. Service bulletin. DAIMLER TRUCK: THICKNESS AND EXCESS MATERIAL FROM DIE PUNCHING MAY PREVENT RETAINING SNAP RINGS FROM FULLY SEATING IN DIFFERENTIAL LOCK SHIFT FORK ASSEMBLIES, CAUSING DIFFERENTIAL LOCK TO REMAIN UNENGAGED OR ENGAGED. MODELS 2011-2012 BUSINESS CLASS M2, CASCADIA, COLUMBIA, CORONADO, WESTERN STAR 4900. *PE