United States 83V102000
Mack Trucks, Inc.
The problem
THE YOKE OF THE TRANSMISSION PROPELLER SHAFT MAY LACK REQUIRED STRENGTH DUE TO ERRONEOUS COUNTERBORE OPERATION IN WHICH 10 MILLIMETERS OF EXTRA MATERIAL MAY HAVE BEEN CUT. THIS CONDITION COULD LEAD TO FRACTURE OF THE YOKE IN SERVICE.
What owners should do
ALL AFFECTED PARTS WILL BE INSPECTED AND REPLACED, IF NECESSARY.
Units 565