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.

A loose chain isn t just noisy it also forces your opener to do more work making the whole system less efficient. When your garage door opener chain becomes loose it creates a loud slapping sound and causes the rollers to smack against the track because of jerky door movements. This would not allow the door to close properly. As soon as the garage door closed it would automatically open.

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. You can put the chain back on your automatic garage door opener using a simple adjustment mechanism. It can also cause your door to jump the track. When the bolts and nuts become loose they can cause your garage door to make a vibrating or rattling noise when you open and close it.

Here is the problem. 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. Here are some tips on how. A few weeks ago the chain was hanging loose about 2 inches below the rail and was rubbing on the rail.

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. So i have the sears craftsman 1 2hp garage door opener. A technician will adjust your garage door chain during a regular maintenance appointment but this is also something you can do yourself if you re handy. Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets.

It s an old model that was installed 15 years ago. 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.