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Vehicle recall 91V066000 · April 18, 1991

Kenworth T600, W900B and 1 more model

The engine fan may experience a resonant frequency causing premature fan failure, and separation from the engine.

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

Summary
The engine fan may experience a resonant frequency causing premature fan failure, and separation from the engine.
Consequence
Engine fan separation can cause death or injury to anyperson in the path of the fan.
Remedy
Replace engine fan with fan from another manufacturer.
Notes
System: engine fan.vehicle description: heavy trucks equipped with flex-a-lite engine fans.

Recall details

NHTSA campaign
91V066000
Reported to NHTSA
April 18, 1991
Filed by
PACCAR, INCORPORATED
Owner notification
August 1, 1991
Vehicles potentially affected
997
Initiated by
the manufacturer
Components
Engine and engine cooling › Cooling system › Fan
Recall 91V066000 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 Kenworth 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 Kenworth dealer can also check your VIN. Recall repairs are free.