You must release the tension on the garage door springs before attempting adjustment or replacement.
Single spring garage door adjustment.
If the garage door isn t opening or closing properly then check the tension on the torsion springs for needed adjustments you may need to have someone helping you to adjust the torsion spring because it can be potentially dangerous.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
If the spring shortens in length unwind the spring and switch sides the spring is on the wrong side.
The springs are located at the top inside part of the garage door.
Without the springs the door is very difficult to lift.
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.
Begin by turning the spring up 1 4 turn until it meets resistance.
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.
Retest the door balance as you did in step 1.
Once the spring is free of tension remove from its track hanger.
Troubleshooting garage door springs.
Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel.
When garage doors won t close all of the way or they close unevenly spring adjustment may be called for.
Newer steel doors with only one strut on top often need only 7 1 4 turns.
Otherwise continue winding until you reach a count of 30 this is 7 1 2 turns which is normal for most 7 garage doors.
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.
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.
You will be winding up on the torsion spring.
Garage door springs are used to offset the weight of the door.
Adjusting garage door extension springs.
Adjusting the tension or balance spring on an up and over garage door when the door feels heavy.