NHTSA recall 07V497000
Trailer hitches › Fifth wheel assembly
Mack Chn and 7 more
Reported Oct 23, 2007950 vehicles affectedMACK TRUCKS, INCMaker’s number SC0331Built Jan 9, 2006 – Jun 29, 2007
The defect
On certain trucks equipped with a saf holland simplex fifth wheel, the lever arm pivot bolt may have been over tightened. an over tightened pivot bolt can distort the pivot bolt spacer sleeve, which may prevent the fifth wheel latch jaw from closing and latching securely around the trailer king pin.
The risk
There IS a possibility that the pivot bolt can become loose without the driver's knowledge. when this occurs, the driver could drive away and the trailer could become disengaged, increasing the risk of a crash.
The remedy
Dealers will replace the pivot bolt and sleeve with a hex head shoulder bolt and washer free of charge. the recall began on january 28, 2008. owners may contact mack trucks at 1-800-528-6586.