There are two types of garage door springs.
Garage door extension spring replacement instructions.
Open the garage door completely and lock it in the open position.
Enlist the service of one or more friends or family members to help with this task as the door will be very heavy when the extension springs are not helping.
A pair of new springs cost about 25.
The doors with two springs are easy to replace.
This is important because different doors weigh different amounts and you want springs with the appropriate lifting power for your particular door.
If you have an older opener you may need to remove a fuse or flip.
Read the information in both.
Some garage door openers have a neutral position for the trolley disconnect.
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.
Tie the extension spring to the roller track then detach the cable from the bottom bracket with a pair of pliers.
A couple of carabiners can.
Get it right the first time.
Supplemental instructions extension spring installation this is a supplement to the residential garage door instructions referred to as the manual.
It covers installation of extension springs step 14 of the manual.
Disengage the opener from the door.
When it comes to extension springs the purpose of the color coding system is to help the company performing your garage door service determine the lifting power of the springs.
Unplug the power cord to your garage door opener.