Menus are sometimes hierarchically organized, allowing navigation through different levels of the menu structure. Selecting a menu entry with an arrow will expand it, showing a second menu (the sub-menu) with options related to the selected entry.
Torsion springs are normally mounted horizontally above the opening of your garage door. When you pull the door down, cables attached to the bottom corners actually force the springs to wind up, in turn energizing the system.
There are two main components to a garage door: the door itself and the opener. In this article, we'll tell you how to make repairs to both things. We'll start with the actual door. Overhead garage doors, whether they roll up in sections or swing up in one piece, operate on spring tension.The door moves on metal tracks on the garage walls, and a heavy spring or springs provide the power.he power spring is mounted on the door frame and hooked to the door. Caution: If a roll-up door has only one torsion spring, at the center of the door, do not try to repair it. The tension is so great that the spring could injure you. For doors with this type of spring, call a professional repair service.