A problem with the spring tension could cause the door to open or close unevenly improperly or at the wrong speed and adjusting the springs will likely solve the problem.
How to adjust overhead garage door springs.
Once the spring is free of tension remove from its track hanger.
You must release the tension on the garage door springs before attempting adjustment or replacement.
Install a vertical two by four brace at the outer edge of the door to prevent the door from falling.
The torsion spring helps the garage door open and close easily.
This can make the other parts of the garage door last a much longer time.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
Should be made in 1 4 turn increments.
How to safely adjust your garage door spring.
Hold the garage door.
Garage door springs offset the weight of the door and allow it to open and close with ease.
If it was opening too quickly move it to the next lower hole.
Adjust the springs on both sides of the door the same way.
There are two torsion springs at each side of the garage door.
To adjust torsion spring tension the door is locked in the down position.
If the garage door isn t opening or closing properly then check the tension on the torsion springs for needed adjustments.
Tension is reduced by removing turns.
Open the door fully to relieve the tension on the hinge springs at each side of the door opening.