Chain Came Off My Garage Door Opener

The chain is attached to a threaded rod that is attached to the trolley.

Chain came off my garage door opener.

Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets. Getting out of the car at the end of a long day to open the garage door can be frustrating especially when the automatic garage door opener sounds like it s working but isn t. Keep it propped open while you fix the chain. Make sure the cable is inside the cable pulley and run the chain around the sprocket.

This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener. Loosen the inside nut and back it off 6 8 turns back the outside nut off 5 6 turns this will give you some slack in the chain. Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door. If the gear and sprocket assembly breaks the motor runs but the door won t move.

Garage door opener systems must be maintained to provide smooth operation throughout the years. You can put the chain back on your automatic garage door opener using a simple adjustment mechanism. Opener systems can develop a number of problems including electronic problems with remote control units chain slippage faulty roller action and cables that come off the pulley system. If your garage door opener has a button that opens the garage door and another button to close it press the close button.

This will release the door from the garage door opener. If you are outside the door when this occurs you will need some assistance to move the door manually. There are a number of reasons why the motor will run but the chain doesn t move.