Garage Door Chain Gear Broke

Pull the chain off the motor unit sprocket and out of the chain spreader.

Garage door chain gear broke.

Pull the chain toward the garage door and hold it in position. I hope this will help. Move the ladder to the outer end of the chain arm near the garage door. A broken garage door chain will immediately impact your garage door s operation and render its automatic motorized capability effectively useless.

Immediate troubleshooting is required and a new garage door chain will need to be installed in place of the old one. Press down on the chain with your finger. Lay the chain on the garage floor while you complete the repair. Grasp the chain 1 foot from where it connects to the end of the threaded chain anchor.

The gear and sprocket assembly is inside the cover of the garage door opener motor. Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley. Periodic maintenance of a liftmaster chain driven garage door opener includes lubricating the chain and greasing the chain rail. Thread the nut s facing the door clockwise until it meets the bracket then release the chain.

If the chain on your garage door is rusty you need to apply lubricant into it to loosen the corrosion. Slide the outer trolley away from the inner trolley. The gear will cost about 50 00 with shipping and then the cost of having someone install it. To do this put some lubricant on a piece of rag this use the rag to wipe the chain.

How to lubricate a liftmaster chain driven garage door opener. Garage door openers. If your chain is badly corroded you may need to remove the chain from the carriage assembly and soak it in lubricant for a few hours. The most common cause of a chain being loose and appearing broken is a broken gear and sprocket.

This can be easily replaced by a garage door service technician.