Use locking pliers or a c clamp under the bottom rollers to prevent the door from rolling down.
How to tension garage roller door 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.
Open the door to release the tension on the springs.
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.
Open the garage door fully.
Follow these to test the tension of your garage door spring.
Close your garage door.
This is how to loosen or tighten the tension on a roll up door.
You must release the tension on the garage door springs before attempting adjustment or replacement.
Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel.
Install a vertical two by four brace at the outer edge of the door to prevent the door from falling.
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.
This is how to loosen or tighten the tension on a roll up door.
Unplug the opener and pull the emergency release cord up and down to disconnect the door from the opener.
Hold the door in place.
To adjust a door that can t stay open bring the first winding bar up to a 90 degree angle with the garage door this is a quarter turn.
Find the two springs and corresponding adjustment screws collars these should be along the shaft.
Here are the steps to adjust common torsion spring mechanisms.
This is accomplished by opening the garage door as fully as possible until it hits the stop bolt on the track.
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.
How to test the garage door spring tension.
Remove the spring hook and adjust the tension.