UPDATED--Navistar is recalling more than 7,700 2012-2013 International ProStar and TranStar commercial trucks, manufactured from August 1, 2011, through July 10, 2012, that are equipped with front brake linings listed as feature codes 0504501, 0504504, or 04EWM. The brake S-Cam tube bracket assemblies made by Meritor on the steer axles may fracture.

A National Highway Traffic Safety Administration bulletin says brake assembly fractures may result in an inoperative brake on the affected wheel and could cause the vehicle to pull to one side unexpectedly during breaking and/or increase the stopping distance. Either result may increase the risk of a vehicle crash.

Navistar has already notified all affected owners about the defect during the course of the 2012 campaign that did not launch due to parts delays. The remedy is expected to be available in August.

Dealers will replace the S-Cam tube bracket assemblies, free of charge.

Owners may contact Navistar at 1-800-448-7825. Navistar's number for this recall is 12530.

This recall supersedes recall 12V-546.

Update corrects number of trucks being recalled.