Proper Chain Tension On Garage Door Opener

Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel.

Proper chain tension on garage door opener.

Chain adjusts by shortening the chain itself. On the master link you will see two or three nuts. Use the wrench to loosen the lock nuts and turn the adjustment nut to set the slack in the chain. If the tension is too loose the springs that help lift the door are ineffective.

This is true even if you have a garage door opener. A properly adjusted chain will be above the base of the rail at its midpoint at inch for t rail or inch for square rail. Replace the batteries in the door remotes. There may be an adjustment linked to the chain or an adjustment to the length of the door opener track.

Unplug the garage door opener then try to open the door with the wall button. Using a screwdriver remove the cover on the garage door opener and then replace the spent battery with a new one. If it does not open you need to replace the backup battery. To achieve proper tension be sure to release the door from the opener before making any adjustments.

By william machin you need proper tension on a garage door to operate the door by hand or with an automatic opener. Just because the door is open does not mean that the spring tension is fully released.