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Garage Door Cable Installation Explained

Garage Door Cable Installation Explained

January 7, 2017

Are you getting ready to tackle the job of installing a new garage door cable? Before you do, make sure you know what you are preparing for and have the right skills and tools. Here is what this particular project entails…

Preparing Your Supplies
First, start with the right cable size for your garage door. The cable is typically a foot or more longer than the garage door. Research your door to see what sized cable you need. Then, gather your tools. You will need:

  • Safety glasses
  • Gloves
  • Work boots
  • Ratchet step ladder
  • Winding bars
  • Wrenches and sockets in various sizes
  • Replacement cables
  • Locking pliers or a vice grip

Once you have these supplies, you are ready to start working.

garage door company Safety First
Before you begin, make sure you take care of the necessary safety precautions. In addition to the safety gear you need to wear, make sure you have turned off power to the garage door. Then, disengage the door by pulling the emergency release handle. Open the door, then place a vice grip below the bottom roller to hold it open. Watch for sharp edges throughout this process.

Removing the Old Cables
Now you are ready to remove the old cables. Start at the center of the door, loosening the setscrews by 1/4 turn. Then, insert the winding bars and unwind the spring, once the tension is out of both springs, move to the cable drum at the top left hand side of the door. Loosen the setscrews slightly and unwind the cable. If needed, use the ratchet and socket to remove the bottom lag screw from the bracket on the jamb and remove the cable.

Inserting the New Cable
To install a new cable, start by inserting it into the bottom bracket, then threading it all the way up to the cable drum. Insert the cable into the cable drum slot, then wind it in place by turning the drum counterclockwise until the cable is tight. Tighten the setscrews to keep the cable in place. Then, use the winding bars to add the tension back to the springs, turning just 1/4 turns at a time until proper tension is reached. Remove the vice grips and winding bars, engage the door and restore power.

This is a fairly simple repair once you are comfortable with it, but any time you are working with tension springs, you do have a safety risk. If you are uncomfortable with the steps outlined above, you need to partner with a garage door repair professional. Contact ASSA ABLOY for help with all of your garage door repair needs.