Question: how to install a garage door with a torsion spring?
Answer: Step 1 - Preparing the door frame. ...  Step 2 - Assemble the torsion springs to the spring tube. ...  Step 3 - Attach mounting plates to garage door frame. ...  Step 4 - Attach assembled torsion springs to mounting plates. ...  Step 5 - Install torsion spring cables. ...  Step 6 - Adjust torsion spring with winding bars.