The other is attached to a pulley connected to the cable.
How to adjust garage roller door spring.
If it was opening too quickly move it to the next lower hole.
For more advice like how to adjust your garage door s torsion springs read on.
Adjust the springs on both sides of the door the same way.
Once the spring is free of tension remove from its track hanger.
Retest the door.
Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel.
If you need to increase the spring tension hook the spring onto a lower hole on the track hanger.
To decrease tension move the hook to a higher hole.
Find the two springs and corresponding adjustment screws collars these should be along the shaft.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
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If it is still not closing correctly secure the door again and keep adjusting the spring until your door fully closes.
Clamp the garage door in place with a c clamp above the bottom roller.
Here are the steps to adjust common torsion spring mechanisms.
One end of the spring is connected to the garage door track or frame.
Detach the old spring from both ends and replace it with the new one and replace the pulleys as well if they are worn out.
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Close the garage door and disconnect your garage door opener.
After adjusting your spring unclamp the door and lower it to test the spring.