For doors with torsion springs located over the door, spend the $ or so to have a garage door professional release the tension. After your new door is installed, remove the old stop material on the outside of the door and replace it with the type that has a rubber weathergasket available at home centers ..Unwind the old springs to release the tension on the garage door’s bar. Insert a winding bar into one of the winding cone holes. Ensure the bar is at least inches and the right diameter for your winding cone… ddmgaragedoors.com springs standard torsion springs.php database To buy standard garage door torsion springs SAFETY WARNING PLEASE READ DE.S .Replace broken extension springs on your garage door. Easy step by step instructions for the experienced or novice DIYer..
.a Raise the garage door slowly. Check the door balance. If you have the correct springs the door should stay down when closed, half way when opened half way, and open when opened. If the door will drop to the floor by itself from the halfway point, add turn of tension to each of the torsion springs..