Plug end extension spring the holmes hally p730 30 in.
Garage door side extension springs.
Two p730 springs one on each side of the door can handle a 90 lbs.
These are called single panel one piece garage door extension springs.
Safety cables help control a broken spring.
Once your garage door is secured remove the spring hook from the track hanger which will allow you to move the hook and adjust the spring s tension.
Door with an initial tension of 110 lbs.
These springs are typically made.
These cables are an important safety feature.
Garage door extension springs counterbalance the weight of garage doors to make them easy to open and close.
The holmes hally p730 30 in.
Garage springs are under an extreme amount of tension and either stretch or torque providing enough force to help you move the door.
When a garage door is open most of the door weight is stored in the horizontal tracks.
One end is secured to a stationary angle or bracket and the weight of the door pulls the other end.
Color coding is the consistent measure for extension springs a 150lb red spring for a 7 door could have been manufactured in several different sizes if you are not sure what color your old spring was use a bathroom scale to weigh the door while it is unsprung and disconnected from your door opener.
Garage door extension springs stretch to provide lifting power for the door.
Extension springs are under a great deal of tension and if one was to break it could cause serious injury.
There are several types of garage door springs to consider when replacing them.
A garage door with extension springs will have a safety cable on each side of the door running through the spring and attached to the wall or ceiling.