Most garage doors have a torsion spring equipped system. The torsion spring system consists of one or two tightly linked springs on a steel shaft; the shaft having cable drums on each side. When the door is raised, the springs unlock and the cable gets turned and latched onto the grooves of the cable drums; thus lifting the door by relieving the tension. Similarly, when the door is dropped, the cable uncoils from the drum and the tension is rebuilt. Hopefully, this introduction gives you an idea how important it is for the door cable and the torsional spring system…