NHTSA recall 07V571000
Service brakes, air › Slack adjusters
Western Star 4900 and 1 more
Reported Dec 18, 200731 vehicles affectedFREIGHTLINER LLCMaker’s number FL-518Built Jan 1, 2005 – Jan 31, 2007
The defect
On certain heavy duty trucks built with sisu fr2p-21, sisu fr2p-26, sisu fr3p-33, or sisu fr3p-48 rear axles, a counter-bore machined in both ends of the worm wheel opening of the slack adjuster housing reduces material thickness between the worm wheel opening and the worm shaft opening. under normal service a crack may develop in this area rendering the slack adjuster inoperable and reducing brake effectiveness.
The risk
Reduced vehicle braking could lead to a crash.
The remedy
Dealers will inspect the slack adjusters, and replace the adjuster if found defective. The recall began on july 31, 2008. owners may contact freightliner at 1-800-547-0712.