NHTSA Recall 07V497000: Fifth wheel assembly (trailer hitches)
MACK TRUCKS, INC reported this safety recall to NHTSA on , covering an estimated 950 vehicles. It affects 8 models including the Mack Chn.
| NHTSA campaign | 07V497000 |
|---|---|
| Manufacturer campaign | SC0331 |
| Component | TRAILER HITCHES › FIFTH WHEEL ASSEMBLY |
| Report received | October 23, 2007 |
| Owner notification | January 28, 2008 |
| Initiated by | Manufacturer |
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.
Safety 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.
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.
Notes
Mack trucks recall no. Sc0331.customers may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (tty 1-800-424-9153), or go to http://www.safercar.gov.
Vehicles covered by recall 07V497000
| Make and model | Model years |
|---|---|
| Mack Chn | 2006, 2007, 2008 |
| Mack Cl | 2006, 2007, 2008 |
| Mack Ct | 2006, 2007, 2008 |
| Mack Ctp | 2006, 2007, 2008 |
| Mack Cv | 2006, 2007, 2008 |
| Mack Cxn | 2006, 2007, 2008 |
| Mack Cxp | 2006, 2007, 2008 |
| Mack Cxu | 2006, 2007, 2008 |
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.