This is accomplished by opening the garage door as fully as possible until it hits the stop bolt on the track.
Garage roller door spring adjustment.
Here are the steps to adjust common torsion spring mechanisms.
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Adjust the springs on both sides of the door the same way.
If it was opening too quickly move it to the next lower hole.
Find the two springs and corresponding adjustment screws collars these should be along the shaft.
Adjusting an extension spring door.
You must release the tension on the garage door springs before attempting adjustment or replacement.
Clamp the garage door in place with a c clamp above the bottom roller.
Garage door reverses before hitting the floor.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
Once your garage door is secured remove the spring hook from the track hanger which will allow you to move the hook and adjust the spring s tension.
Open it just as wide as you can without hitting the garage door opener s stop bolt and place a clamp on the track on both sides to keep the door in.
Close the garage door and disconnect your garage door opener.
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Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel.
To adjust your garage door s side mounted springs first open your door fully and secure it in place with a c clamp below the bottom roller.
With an extension spring door the goal is to take all the tension off the door before you even think about touching a spring you can do this by opening the door all the way and propping it up with a ladder.
This video applies t.
Once the spring is free of tension remove from its track hanger.