Garage Door Extension Spring And Cable Diagram

The pulley is used because garage doors are very heavy and can be upwards of 250 lbs.

Garage door extension spring and cable diagram.

A pulley lessens the amount of force needed to pull the garage door upwards and let the garage door back down gently. Measure area labeled headroom 5 which is the distance between the top of the door opening jamb header and the ceiling or floor joist. For extension springs always use safety cables to compensate for a broken hook or spring which could otherwise release the spring like a cannonball across the garage. They don t have loops at the ends closer to the h.

Collars couplers and couplings. For extension spring systems they need safety cables so follow our video on how to replace your garage door extension spring safety cables. Unplug the garage door opener. Garage door bottom weatherseal.

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. Run one end of the cable through the back hanging like this. Garage door extension cables 2 pack are made of galvanized steel and have a 1 8 in. Safety cables keep a broken garage door spring from sailing around the garage.

Commercial cable replacement the following pdfs are instructions for replacing commercial garage door cables in different situations a repair person may encounter in the field. They are similar to the garage door cables though usually lighter weight. First open the door fully and place a clamp or vice grip under each bottom roller to prevent the door from closing. The cable is what is attached to both the springs and the electric garage door operator.

Hinges 11 gauge. The cable has 7 strands with 7 wires per strand for strength and durability. Replacing the pulleys must be done with the garage door open. 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.

Carefully follow all of the safety instructions in this tutorial. Here is our extension spring safety cable kit. Hinges 14 gauge. The everbilt 12 ft.

Garage door hardware kit. Installing a safety cable is a simple process. End flanges and plates. Made of galvanized steel.

Hinges 18. For opening and closing garage doors. Minimum end to end tensile strength of 1 400 lbs. For extension springs make sure there is no tension in the springs by blocking the door at its highest position before proceeding to spring adjustments.

This lifts the door.