How To Replace Craftsman Garage Door Chain

The chain got loose and popped off the gear.

How to replace craftsman garage door chain. This diy repair guide explains how to replace the motor on a chain drive garage door opener. Thread the nut s facing the door clockwise until it meets the bracket then release the chain. If the gear and sprocket assembly breaks the motor runs but the door won t move. If you have a product that requires repair or replacement under warranty simply return the product to the original place of purchase for repair or replacement depending on the warranty coverage outlined below.

The motor turns the sprocket which drives the chain to open and close the door. Pull the chain toward the garage door and hold it in position. I am not a professional. Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.

You should have 1 2 inch of play in the chain. If the motor won t start when you activate it replace it with the manufacturer approved replacement part. This is a video on how to change the gear sprockets in a craftsman garage door opener. This was a craftsman model 139 53976srt.

Follow these steps to replace the motor in craftsman chamberlain and liftmaster chain drive garage door openers. Craftsman tools are backed by some of the strongest warranties in the market today. My sears chain drive garage door opener s main gear is worn. This diy repair guide explains how to replace the chain and cable assembly on a chain drive garage door opener.

Documenting how i repaired the garage door. If the chain and cable assembly breaks the door won t move. I replaced just the main gear with the sprocket and shaft assembly for 25 or so from a supplie. Press down on the chain with your finger.