Garage Door Opener Chain Loose When Closed

Chain driven garage door openers should have some slack in the chain for optimal performance.

Garage door opener chain loose when closed. Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets. If you find that your garage door opener chain has become loose with time you may want to tighten it up in order to remove some of that slack. Here are some tips on how. There may be an adjustment linked to the chain or an adjustment to the length of the door opener track.

In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor. Both adjustment types should be done with the door closed and disconnected from the opener using the emergency release. You may find that a loose garage door opener chain has less power to open and close your garage door or you may find that it is just hitting the door as it moves it and creating an annoying sound. Just tighten enough to stop it hitting the rail.

There are only a few ways that the chain can be tightened. It can also cause your door to jump the track. A loose chain isn t just noisy it also forces your opener to do more work making the whole system less efficient. Motor unit assembly parts rail assembly parts and installation parts for liftmaster chain drive garage door opener models 1355 1355m 1356 1356m liftmaster 1345 1345m 1346 1346m repair parts list and diagrams.

If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch. A loose garage door chain has less power to open and close the garage door and it can often create a loud and annoying sound as the slack hits the door. Tightening up the slack on your garage door will allow it to run more efficiently and will prevent loud noises that disrupt your home. You can put the chain back on your automatic garage door opener using a simple adjustment mechanism.

Chain adjusts by shortening the chain itself.