Proper Chain Tension On Garage Door Opener

Using a screwdriver remove the cover on the garage door opener and then replace the spent battery with a new one.

Proper chain tension on garage door opener.

To achieve proper tension be sure to release the door from the opener before making any adjustments. Hold the garage door in this position by attaching a c clamp to the track at a point below the lowest door roller wheel. There may be an adjustment linked to the chain or an adjustment to the length of the door opener track. There are only a few ways that the chain can be tightened.

If the tension is too loose the springs that help lift the door are ineffective. Both adjustment types should be done with the door closed and disconnected from the opener using the emergency release. Unplug the garage door opener then try to open the door with the wall button. Replace the batteries in the door remotes.

This is true even if you have a garage door opener. On the master link you will see two or three nuts. If it does not open you need to replace the backup battery. Usually a pair of nuts are associated with the locking mechanism while one is concerned with the adjustment of the chain.

Just because the door is open does not mean that the spring tension is fully released. 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.