When garage doors won t close all of the way or they close unevenly spring adjustment may be called for.
Single spring garage door adjustment.
Troubleshooting garage door springs.
Torsion springs must be adjusted with the door in the down position.
Adjusting garage door extension.
Retest the door balance as you did in step 1.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
Adjust the springs on both sides of the door the same way.
How to safely adjust your garage door spring.
If it was opening too quickly move it to the next lower hole.
Adjustment to torsion springs can be dangerous because they must be adjusted with the door down and the spring under tension.
Adjusting garage door springs is a common repair.
Without the springs the door is very difficult to lift.
Begin by turning the spring up 1 4 turn until it meets resistance.
You will be winding up on the torsion spring.
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.
Many garage door servicemen mark the springs with chalk or paint but you can probably wind the springs in the time it would take me to explain how to read the marks.
Be sure to have all your tools inside before closing the door unless you have an alternate access door to the garage.
At this point you will wind the springs.
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.
This video applies t.