Vehicle recall 93V024000 · February 16, 1993

Mack CH, CL and 6 more models

The carrier yoke bolts were manufactured with worn rolling thread dies, causing stress concentrations which caused cracks during the quenching process.

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

Summary: The carrier yoke bolts were manufactured with worn rolling thread dies, causing stress concentrations which caused cracks during the quenching process.
Consequence: This condition can cause bolt failure and allow thedriveline to separate from the carrier assembly.
Remedy: Replace the carrier yoke bolts.
Notes: System: trailer yoke.vehicle description: heavy trucks.

Recall details

NHTSA campaign: 93V024000
Reported to NHTSA: February 16, 1993
Filed by: MACK TRUCKS, INCORPORATED
Owner notification: March 24, 1993
Vehicles potentially affected: 4,924
Initiated by: the manufacturer
Components: Trailer hitches

Recall 93V024000 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.

Mack CH (1992-1993): 1993, 1992
Mack CL (1992-1993): 1993, 1992
Mack DM (1992-1993): 1993, 1992
Mack MH (1992-1993): 1993, 1992
Mack MR (1992-1993): 1993, 1992
Mack RB (1992-1993): 1993, 1992
Mack RD (1992-1993): 1993, 1992
Mack RM (1992-1993): 1993, 1992

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.

Check your VIN with NHTSA

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.