Install a vertical two by four brace at the outer edge of the door to prevent the door from falling.
How to tension garage roller door springs.
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.
Hold the door in place.
Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel.
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.
How to test the garage door spring tension.
This is how to loosen or tighten the tension on a roll up door.
Open the door fully to relieve the tension on the hinge springs at each side of the door opening.
Open the garage door fully.
Clamp the garage door in place with a c clamp above the bottom roller.
This is how to loosen or tighten the tension on a roll up door.
Disengage the garage door from the motor or in other words put the door into manual mode lift the garage door until the bottom of the door is roughly chest height.
Use locking pliers or a c clamp under the bottom rollers to prevent the door from rolling down.
Close your garage door.
Place the second winding bar in the hole that s now facing the floor and vertical to the door to help you hold everything in place while you return the set screws to the holes and tighten them down snugly.
Follow these to test the tension of your garage door spring.
Find the two springs and corresponding adjustment screws collars these should be along the shaft.
Unplug the opener and pull the emergency release cord up and down to disconnect the door from the opener.
Here are the steps to adjust common torsion spring mechanisms.
Close the garage door and disconnect your garage door opener.
Open the door to release the tension on the springs.
You must release the tension on the garage door springs before attempting adjustment or replacement.