Western Star 4900 & 6900
What the hazard is
Failure of the slack adjuster housing could result in loss of function of the brake assembly for that wheel. This would cause reduced braking capacity and may lead to loss of control of the vehicle.
What to do
Letters are being sent to affected owners. When you contact your selling dealer, refer to campaign number FL605..
Defect
The slack adjusters may have housings with inadequate structural integrity, which may cause failure under normal operating loads.