Nearly 700 Freightliner and Western Star trucks are being recalled due to a possible defect in the power train axle assembly.
Daimler Trucks North America says approximately 698 model year 2017 Freightliner Cascadia and Western Star 5700 trucks equipped with NFD rear tandem axles are included in the recall.
A National Highway Traffic Safety Administration document from Daimler says during the hardening process, the axle assembly output shaft could have been made brittle, resulting in the possible fracture of the shaft while the trucks are in use. Daimler adds that if the output shaft breaks while going down a grade, the compression braking would be ineffective.
Daimler will notify owners of the affected vehicles, and Detroit Axle dealers will replace the output shafts free of charge. The recall is expected to begin on July 9. For more information, owners of the trucks can contact Daimler customer service at 1-800-547-0712 with recall number FL-738. NHTSA’s recall ID is 17V-315.