United States 98V179000
Mack Trucks, Inc.
The problem
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.
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.
What owners should do
DELERS WILL INSPECT THE WATER PUMP AND, IF NECESSARY, REPLACE THE PUMP.
Units 62