Defect summary
AT HIGH ENGINE SPEEDS, THE COOLING FAN ADAPTER PLATE, WHICH CONNECTS THE COOLING FAN AND THE FAN PULLEY, HAS INSUFFICIENT STRENGTH, ALLOWING CRACKS TO DEVELOP IN THE ADAPTER PLATE.
Consequence
COOLING FAN COULD BE DISLODGED, DAMAGING RADIATOR AND FAN GUIDE; AND FAN COULD BREAK LOOSE, FLY OUT OF ENGINE COMPARTMENT, AND INJURE PERSONS IN THE IMMEDIATE VICINITY.
Remedy
REPAIR OR REPLACE ADAPTER PLATE TO PREVENT CRACKS AND DAMAGE.
Notes
SYSTEM: COOLING FAN.VEHICLE DESCRIPTION: CLASS 3 MEDIUM DUTY TRUCK CHASSIS WITH AUTOMATIC TRANSMISSION.
Source: NHTSA ODI recalls file, campaign 90V081000. Text as published by NHTSA.