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Vehicle recall 07V497000 · October 23, 2007

Mack CHN, CL and 6 more models

On certain trucks equipped with a saf holland simplex fifth wheel, the lever arm pivot bolt may have been over tightened.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary
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.
Consequence
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.

Recall details

NHTSA campaign
07V497000
Reported to NHTSA
October 23, 2007
Filed by
MACK TRUCKS, INC
Manufacturer campaign
SC0331
Owner notification
January 28, 2008
Vehicles potentially affected
950
Initiated by
the manufacturer
Components
Trailer hitches › Fifth wheel assembly
Recall 07V497000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Has your Mack been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.