Due to improper and inadequate welding practices, the fifth wheel on the involved vehicles is defective. Frame mounted supports may have incomplete or poor quality welds. The welds could subsequently fail allowing separation of the tractor from the trailer.
Equipment & accessories
Mack R Equipment problems by year
0 complaints filed with NHTSA about the Mack R's equipment & accessories. Trailer hitches, mobility equipment, accessories and aftermarket parts.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data