United States 99V303000
PACCAR Incorporated
The problem
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS. THE INSTALLATION OF THE ALUMINUM STEERING DRIVELINE EXCEEDS THE U-JOINT ANGLES SPECIFIED BY DANA, THE DRIVELINE MANUFACTURER. BY EXCEEDING THIS SPECIFICATION, THE U-JOINT COULD CONTACT AND CAUSE A STRESS RISER IN THE ALUMINUM DRIVE SHAFT. THIS CONTACT COULD CAUSE IN A NOTCH IN THE ALUMINUM DRIVEMENT, RESULTING IN A STRESS RISER IN THE SHAFT.
Risk
THIS NOTCH COULD CAUSE PREMATURE FAILURE OF THE STEERING DRIVELINE, RESULTING IN LOSS OF VEHICLE CONTROL AND/OR VEHICLE CRASH WITHOUT PRIOR WARNING.
What owners should do
DEALERS WILL REPLACE THE ALUMINUM DRIVELINE WITH A STEEL VERSION.
Units 2607