Garage Door Opener Runs But Gear Won Move

Follow the steps in this repair guide and video to replace the gear and sprocket assembly in craftsman chamberlain and liftmaster chain drive garage door openers.

Garage door opener runs but gear won move.

Replace broken chain belts sprockets or pulleys. If the chain was installed too tightly on the garage door opener it can make opening the door more difficult for the automatic opener. If the gear becomes too worn it will no longer be able to move the chain. Check to make sure the chain belt assembly is not broken or off its pulley.

This excess tension causes the gear that moves the chain to grind down. This is frustrating especially if you re trying to get your car out of the garage. You activate the door opener by either a remote control hand held unit or by pressing the wall button mounted on the wall and hear the motor humming but the garage door does not move. This indicates that something in the opener system has malfunctioned.

Sometimes homeowners will find that their automatic garage door opener runs but the door doesn t move. If not re engage it. If you are able to raise your garage door easily it is not the problem. If your chain drive garage door opener motor runs but the garage door won t move the drive and worm gears might be stripped or worn.

Replace a broken gear and sprocket assembly with the manufacturer approved replacement part. This repair guide and video show step by step how to replace the drive and worm gears in a chain drive garage door opener. A professional garage door technician will be able to tell you whether it is best to replace the opener or repair the old one. There are mainly two reasons for this occurrence and one of the reasons is depicted in this blog.

Detach the opener by pulling the emergency handle downward. Automatic garage door opener runs but door doesn t move. Opener runs but the garage door does not move screw drive models make sure the carriage is engaged. They can hear the motor going but the door itself is not opening.

This will determine if the issue is connected to the door itself or the opener. The next step is to attempt to open your garage door manually. Check to make sure the pulley is not boken.