Safety Recall NHTSA · 77V173000 Reported October 12, 1977

Engine cooling system:fan

Q: What is recall 77V173000?

NHTSA recall 77V173000 was issued by Mack Trucks, Inc. on October 12, 1977. It addresses: Engine cooling system:fan. The recall affects approximately 48,000 vehicles , with the defect involving the Engine And Engine Cooling component.

Q: Is my vehicle included in this recall?

The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls . NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.

Q: How long do I have to get a recall repair done?

There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.

Mack Trucks, Inc. · Engine And Engine Cooling · 48,000 vehicles potentially affected

NHTSA ID

77V173000

Manufacturer Campaign

NR (Not Reported)

Manufacturer

Mack Trucks, Inc.

Component

Engine And Engine Cooling

Vehicles Affected

48,000

Recall Type

Vehicle

Report Received

October 12, 1977

Defect Summary

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.

Corrective Action

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

What you should do

Look up your VIN at nhtsa.gov/recalls to confirm this recall applies to your vehicle.
Contact an authorized Mack Trucks, Inc. dealer and reference recall ID 77V173000 or campaign NR (Not Reported).
Schedule the free repair. By federal law, the manufacturer must remedy the defect at no cost.

View Official NHTSA Notice →

Similar Recalls

Other recalls from Mack Trucks, Inc. or involving Engine And Engine Cooling.

Recall 78V222000

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Electrical System · 161 affected · Oct 11, 1978

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Recall 26V270000

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Engine And Engine Cooling · 88,039 affected · Apr 28, 2026

FAQ: Recall 77V173000

Your rights, the repair process, and what each field on this page means.

What is recall 77V173000?

NHTSA recall 77V173000 was issued by Mack Trucks, Inc. on October 12, 1977. It addresses: Engine cooling system:fan. The recall affects approximately 48,000 vehicles, with the defect involving the Engine And Engine Cooling component.

How do I get this recall repaired?

Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 77V173000 or the manufacturer campaign number NR (Not Reported). Under federal law, the repair is completely free regardless of vehicle age or owner history.

Is my vehicle included in this recall?

The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.

How long do I have to get a recall repair done?

There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.

Where does the data on this page come from?

All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.