Engine and engine cooling: cooling system
- Component
- Engine and engine cooling: cooling system
- Manufacturer
- MACK TRUCKS, INCORPORATED
- Vehicles affected
- 62
- Reported to NHTSA
- 1998-08-03
- Owners notified
- 1998-11-09
Defect description
VEHICLE DESCRIPTION: FRONT DISCHARGE, REAR ENGINE MIXERS. THE FAN DRIVE PULLEY THAT ATTACHES TO THE WATER PUMP CAN SHOW EXCESSIVE AXIAL RUNOUT CAUSING THE FAN AND PART OF THE FAN DRIVE TO SEPARATE FROM THE DRIVE PULLEY.
Safety risk
THE FAN CAN CAUSE OTHER VEHICLE DAMAGE. IF THE HOOD IS OPEN AT THE TIME OF FAN FAILURE, FRAGMENTS PROPELLED COULD CAUSE POSSIBLE PERSONAL INJURY TO PERSONS SERVICING THE ENGINE OR STANDING NEARBY.
Manufacturer remedy
DELERS WILL INSPECT THE WATER PUMP AND, IF NECESSARY, REPLACE THE PUMP.