Lock the door open again with c clamps or locking pliers and stretch the extension springs another one to two inches with the garage door in its fully open position.
How to install new springs on garage door.
Get your new extension spring cable.
A pair of new springs cost about 25.
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.
A couple of carabiners can.
Pre drill the door for the new carriage bolts.
The doors with two springs are easy to replace.
Install the center bearing and the right spring then secure the cones.
Slide the torsion bar to the left then add.
Tap the carriage bolt into the garage door with a hammer.
Place your new bottom bracket on the bottom of the garage door.
Don t stretch the springs so far that the sheave on the spring and the stationary sheave touch when you retest the door.
When your new springs arrive put the new left spring.
Insert the bolts in the stationary cones of the new torsion spring and insert the bolts in the slots on the spring anchor bracket.
Installing the new springs 1.
Repeat this process on the other side of the door.
Thread the cables and tighten.
Tie the extension spring to the roller track then detach the cable from the bottom bracket with a pair of pliers.
There are two types of garage door springs.