Once in place disconnect the garage door.
How to change your garage door spring.
If your garage door uses only one torsion spring lifting the door manually could be extremely difficult unless you are able to lift between 150 and 300 pounds depending on the weight of the door.
The bigger hole in the cone goes at the stationary end of the shaft.
If the wire starts to spin after a few turns you have placed the wrong garage door spring on the shaft.
Replace extension garage door springs by following these steps.
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This video will show you how to replace the extension springs on your garage door.
Once you ve completed a quarter turn insert the other bar into a different hole in the cone and let the bar lever against the closed garage door to hold the spring tension.
This video will show you how to replace the extension springs on your garage door.
Better yet call a garage door repair person to inspect and repair the door for.
Diy garage door torsion spring replacement step by step how to video.
That said you should only lift the door with a second set of hands.
A safety cable is threaded through the spring to.
This allows you to move the original bar to repeat the process alternating the bars with each quarter turn.
Remove the wrong spring and place on the correct one.
Slide the new spring onto the shaft.