One at the end of each spring and one at the top of the vertical door track they also have two cables on each side.
How to change old garage door springs.
Doors with extension springs have two sets of pulleys which are sometimes called sheaves.
This system is unsafe and sh.
Replacing torsion springs is the more difficult and potentially dangerous task.
You ll also need to secure the springs that allow the door to move but once you do your garage will open and shut smoothly and safely.
One cable attaches to the bottom of the door runs up and over the pulley above the door and around the spring pulley and then attaches to the door track bracket.
The torsion garage door springs will be located on either side of the center of the door frame while extension springs are on swing out arms placed on either side of the door itself.
Garage door springs can be easily broken making the garage door difficult to open or even putting the vehicle or driver at risk by dropping on them.
After removing the old door installing the new door is done by stacking the door panels one at a time and fitting the roller tracks around the panels wheels.