Proper Chain Tension On Garage Door Opener

If the tension is too loose the springs that help lift the door are ineffective.

Proper chain tension on garage door opener.

Just because the door is open does not mean that the spring tension is fully released. To achieve proper tension be sure to release the door from the opener before making any adjustments. If it does not open you need to replace the backup battery. Using a screwdriver remove the cover on the garage door opener and then replace the spent battery with a new one.

Both adjustment types should be done with the door closed and disconnected from the opener using the emergency release. Chain adjusts by shortening the chain itself. Unplug the garage door opener then try to open the door with the wall button. Use the wrench to loosen the lock nuts and turn the adjustment nut to set the slack in the chain.

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. On the master link you will see two or three nuts. Replace the batteries in the door remotes. This is true even if you have a garage door opener.

Usually a pair of nuts are associated with the locking mechanism while one is concerned with the adjustment of the chain. Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel.