This video applies t.
How to adjust spring tension on henderson garage door.
This is accomplished by opening the garage door as fully as possible until it hits the stop bolt on the track.
Finish with a test of the garage door tension spring.
Remove the clamps and pliers from the torsion tube and track and lift the door about 3 ft.
Adjusting an extension spring door.
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.
The springs are located at the top inside part of the garage door.
If the door springs are properly adjusted the door should stay in place when you let go.
Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel.
Open it just as wide as you can without hitting the garage door opener s stop bolt and place a clamp on the track on both sides to keep the door in.
You must release the tension on the garage door springs before attempting adjustment or replacement.
Garage door springs offset the weight of the door and allow it to open and close with ease.
If the door falls when you let go add a quarter turn to each spring.