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Recall campaign77V173000

Recall 77V173000: 1972–1977 Mack RD and 1 other model

Engine and engine cooling › Cooling system › Fan
Report received
Oct 12, 1977
Manufacturer
Mack trucks, incorporated
Potentially affected
48,000vehicles
Model years
1972–1977

Check your own vehicle. A recall applies only to vehicles within the affected build range. Enter your VIN at nhtsa.gov/recalls. Recall repairs are free at a franchised dealer.

What NHTSA recorded

The flex blade fans on the involved vehicles may develop cracks in the laminated stiffener as a result of fatigue during operation. If such a condition exists and the cracks go undetected, continued operation could cause pieces of the stiffener to break off.

Remedy

Dealer will replace the original fan with a steel fixed blade fan, free of charge.

Affected model years

Pages for each model year show complaints, parts, mileage and other recalls.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.