Step 7: Thread the Cable

worker threading the steel cable that transfers the springs' tension to the garage floor
Photo: Kolin Smith
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Two steel cables transfer the springs' tension to the door. We hook one end of each cable to a bracket at the bottom corner of the door and pull it up to a sheave attached to the upper track. The cable then loops around the sheave on the spring and hooks to the brackets anchoring the curved track sections. We remove the C-clamps. When balanced, a door will need the same force to slide it up and down.
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    Tools List

    • drill
      Impact driver, for driving screws through hinges and brackets
    • locking pliers
      Locking pliers, used to hold open the door while the spring is attached
    • ratchet wrench
      Ratchet wrench, used to tighten nuts on machine screws
    • ladder
      Ladder

    Shopping List

    Sectional garage door, hinged panels that roll on tracks

    Assorted garage-door hardware and tracks, used to support the door in doorway opening

    Decorative hardware,to mimic handles on traditional outswing doors