Replacing A Garage Door Opener Chain

Replace a broken gear and sprocket assembly with the manufacturer approved replacement part.

Replacing a garage door opener chain.

Pull the emergency release rope to release the trolley from the garage door. Use a step ladder to access the garage door opener s power cord and motor unit. Garage door opener chain kits discover a wide selection of high quality garage door chain kits from liftmaster. Take the garage door opener down.

How to put a chain back on an automatic garage door opener step 1. This garage door opener works by moving gears and metal parts together. Whether you need pulley brackets replacement chains or extensions our garage door chain kits come with the parts and pieces to help you get the job done. If the gear and sprocket assembly breaks the motor runs but the door won t move.

It uses a chain running assembly unit attached to tension springs that lift the garage door up and down. Chain drives a long chain pulls the door open and closed are the least expensive but they re loud. Screw drives a long threaded rod drives a mechanism that opens and closes the door are priced in the mid range. Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.

Remove the chain and cable assembly. Press the wall control button or remote so that the opener completes its close cycle and the sprocket on. Disengage the garage door from the opener by pulling down on the emergency pull cord to release the door trolley. Look to the end of the rail that hides the screw belt or chain to find the manual pull handle and the bracket to which it.

Start your garage door replacement project by removing the old one. If you are not confident in your ability to diagnose the problem call a local garage door service company. These are widely used since they are affordable and easily available. Sprocket is at the end of the opener rail closest to the garage door opening.

Garage door openers are available with a chain drive screw drive or belt drive. Chain drive garage door opener uses a metal chain to open the garage door. The chain wraps around this sprocket as well as the gear and sprocket at the motor.