Garage Door Extension Spring Diagram

For extension spring systems they need safety cables so follow our video on how to replace your garage door extension spring safety cables.

Garage door extension spring diagram.

They are attached to the garage door track or wall near the stationary pulleys lace through the garage door springs and connect to the same support that the spring does. Door with an initial tension of 110 lbs. Place scale under the garage door on the side of the door with the broken extension spring. They stretch to provide lifting power for the garage door.

They are similar to the garage door cables though usually lighter weight. Measure area labeled headroom 5 which is the distance between the top of the door opening jamb header and the ceiling or floor joist. Garage door springs offset the weight of the door and allow it to open and close with ease. This is why two 100 pound extension springs are needed to lift a 100 pound garage door.

However the pulleys on the garage door reduce the amount of weight carried by the extension spring so the extension spring really only has to lift half of its weight in this case 50 pounds. The springs have a safety cable inside to prevent injury in case of accidental breakage. The following pdfs are instructions for replacing commercial garage door cables in different situations a repair person may encounter in the field. Order online or call our friendly staff 1 800 233 1487.

A problem with the spring tension could cause the door to open or close unevenly improperly or at the wrong speed and adjusting the springs will likely solve the problem. The holmes hally p730 30 in. Extension springs 2 pack are made of spring steel and designed to be mounted perpendicular above the horizontal track of the garage door. Extension springs 2 pack are the overbuilt 130 lbs.

At american garage door supply offer the largest selection of garage door repair parts and hardware. Selecting the right extension spring while measuring torsion springs to make sure you get the right one is fairly easy getting the right extension spring is even easier. 10 is required for the standard extension spring or ez set extension spring system while 12 is required for a standard torsion spring and ez set torsion spring system. Safety cables keep a broken garage door spring from sailing around the garage.

Do not use a digital scale as they often will not respond to the door weight changing as rollers no longer stick to the track. Plug end extension spring the holmes hally p730 30 in. This video will help you weigh a garage door with extension springs. That s because garage door extension springs have a stripe of color on them that indicates their size.

Two p730 springs one on each side of the door can handle a 90 lbs.