Do You Have an Extension or Torsion Spring System?
Extension Springs Stretch (Extend or Elongate) Above the Tracks
Extension springs, like the one pictured directly below, stretch out/extend/elongate as the door goes down. They have a cable and pulleys that transfer the pull of the springs to the bottom of the door. There should be a safety cable going through the middle of the springs, so that if something breaks, the spring does not fly around the garage.
Torsion Springs Are Wound and Turn a Tube Above the Garage Door
Torsion springs, like the one pictured directly below, are wound up and counterbalance the door by turning a tube. At the end of the torsion tube are drums that cables wrap around, transferring the pull (torque) of the spring to the bottom of the door.
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