Don t stretch the springs so far that the sheave on the spring and the stationary sheave touch when you retest the door.
How to install new springs on garage door.
Tap the carriage bolt into the garage door with a hammer.
A couple of carabiners can.
Tie the extension spring to the roller track then detach the cable from the bottom bracket with a pair of pliers.
The doors with two springs are easy to replace.
Place your new bottom bracket on the bottom of the garage door.
Make sure that the bearing is inside the stationary cone.
Release the tension on side mounted extension springs by lifting the door and locking it in place on each side with a pair of locking pliers.
When your new springs arrive put the new left spring.
There are two types of garage door springs.
Insert the bolts in the stationary cones of the new torsion spring and insert the bolts in the slots on the spring anchor bracket.
Install the center bearing and the right spring then secure the cones.
Slide the left spring onto the tube and add the cable drum.
Pre drill the door for the new carriage bolts.
Repeat this process on the other side of the door.
Get your new extension spring cable.
Insert the carriage bolts through the door from the outside.
A pair of new springs cost about 25.
Finger tighten nuts on bolts until the stationary cone is flush against the center bearing plate.
Thread the cables and tighten.