The drum is cast light weight aluminum alloy" in diameter and." in area around the flat portion. Push the torsion bar to the left, then slide on the facility bearing. Install the appropriate spring as well as press the bearing right into the stationary cone. While turning, vise grip the http://garagedoorrepairnapervill82036.thezenweb.com/Getting-The-Garage-Door-Spring-Repair-Saint-Albert-To-Work-37446620