Cotter Pin Installation Error Leads to Mack Recall

ALLENTOWN, Penn. – Mack Trucks, Inc. has begun the process of recalling certain 2020-2022 Mack MD models to correct a potentially incorrectly installed cotter pin which secures the brake pedal to the pedal clevis pin.

According to the National Highway Traffic Safety Administration Part 573 Safety Recall Report 21V-684,  the recall so  affects 2,823 vehicles, but further investigation may result in a revised figure. The agency estimates the issue might affect one (1) percent of the recall population, which was produced between Nov. 2019 and Aug. 2021.

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Rear Brake Failure Issue Causes Mack Recall

The problem, as reported by NHTSA,  “If the cotter pin comes out, the clevis pin may work loose from the brake pedal mounting bracket, which can affect the operation of the brake pedal and the ability to stop the vehicle. This presents a risk of a vehicle crash.”

Mack has not received any reports of crashes or incidents related to the issue which resulted in the recall.

Owners will be urged to bring their vehicles to an authorized Mack dealer for an inspection to see if the cotter pin was correctly installed and, if the fault is discovered, correctly install it. Dealers began being notified earlier this month. Owners were scheduled to begin receiving notification this week.

Mike Geylin
Mike Geylin

Mike Geylin is the Editor-in-Chief at Hagman Media. Geylin has been in automotive communications for five decades working in all aspects of the industry from OEM to supplier to motorsports as well as reporting for both newspapers and magazines on the industry.