Garage Door Opener Sprocket Not Turning

As of today 2017 11 08 there were two answers.

Garage door opener sprocket not turning.

This was a craftsman model 139 53976srt. Inside the garage door opener there is going to be a gear reduction system to adapt the motor speed to the chain sprocket speed. This question is from quora. How to fix a chain drive garage door when it won t open.

Having an automatic door opener in your garage is a great convenience but you have to give the opener and all its parts regular. Inappropriate size the size and power of the garage door opener must be properly matched with the weight and size of the door. I realized parking the car in the garage would be a hassle since i would have the open the door manually again. If your garage door opener s motor runs but the chain doesn t move the gear and sprocket assembly might be broken or worn.

This repair guide and video show how to replace a chain drive garage door opener gear and sprocket assembly. Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets. This speed reduction system also increases the motor torque at the sprocket so that a relatively small motor can easily pull the chain and move the garage door up and down. Chain driven garage door openers should have some slack in the chain for optimal performance.

1 check to make sure the opener is getting power. Shredded plastic gears are a common problem with chain driven garage door openers. So if you suddenly find that the motor on your garage door opener sounds like it s running but the door is not moving checking for worn gears is the first thing you should do. What could be causing my garage door opener chain to not move.

Actually there are many more answers. In this case the motor will run and the gear will turn but the chain will not move and the door will not open. I pulled the release on the door and opened it all the way. Fortunately the repair is neither difficult nor expensive and it should only take an hour of your time.

If the door is too heavy for the opener the mechanisms that lift the door can wear out quickly. You can put the chain back on your automatic garage door opener using a simple adjustment mechanism.