Set top door panel in place and secure it with hinge screws.
How to install a single garage door spring.
Feed steel cable over the pulleys at the end of the track.
The door will usually drop back down and raise the bar.
Slide the spring that you placed on the left side of the door at the beginning onto the shaft as shown.
This video will show you how to replace the extension springs on your garage door.
Slowly pull down on the winding bar until the garage door rises 3 and the roller hits the vise grip on the track.
Secure cable end to bracket.
Many of the accidents that occur while fixing garage door springs are due to installing springs that are too strong.
Tie the extension spring to the roller track then detach the cable from the bottom bracket with a pair of pliers.
Open the door then tighten locking pliers onto the track to hold the door open.
Use locking pliers or a c clamp to secure the door to the track to keep it from opening when you release the tension on the springs.
Hook the garage door spring onto door track bracket.
This video will show you how to replace the extension springs on your garage door.
Single torsion spring replacement.
You may need to loosen the set screws for the spring to slide onto the shaft.
Disconnect the garage door opener so the door remains closed.
Screw on the top hinges and rollers.