United States 93V049000
STEWART & STEVENSON SERV.
The problem
DURING EXTREME BRAKING APPLICATION THE FRONT AXLE ROLLS FORWARD, PUSHING THE STEERING ARM FORWARD, AND NON-UNIFORM BRAKING EFFORT, CAUSED BY VARIOUS BRAKE COMPONENT CONDITIONS, RESULTS IN THE VEHICLE PULLING TO THE RIGHT.
Risk
UNEXPECTED PULL TO THE RIGHT DURING BRAKE APPLICATIONCOULD RESULT IN LOSS OF STEERING CONTROL AND AN ACCIDENT.
What owners should do
AXLE ROLL WILL BE CORRECTED BY STIFFENING THE UPPER TORQUE ARM TO REDUCE THE ALLOWANCE FOR AXLE ROLL AND RELOCATING THE UPPER TORQUE ARM TO ELIMINATE THE INTERFERENCE WITH THE STEERING ARM. THE NON-UNIFORM BRAKING EFFORT WILL BE CORRECTED BY REPAIRING THE BRAKES IN ACCORDANCE WITH ROCKWELL BRAKE STANDARDS.
Units 15