How To Replace Craftsman Garage Door Chain

The chain and cable assembly connects to the trolley and drives the trolley along the rail to raise and lower the door.

How to replace craftsman garage door chain.

This was a craftsman model 139 53976srt. I am not a professional. Documenting how i repaired the garage door. Grasp the chain 1 foot from where it connects to the end of the threaded chain anchor.

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. Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door. This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener. I replaced just the main gear with the sprocket and shaft assembly for 25 or so from a supplie.

My sears chain drive garage door opener s main gear is worn. Follow these steps to replace the motor in craftsman chamberlain and liftmaster chain drive garage door openers. If the chain and cable assembly breaks the door won t move. Craftsman tools are backed by some of the strongest warranties in the market today.

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. The motor turns the sprocket which drives the chain to open and close the door. The chain got loose and popped off the gear.

This diy repair guide explains how to replace the chain and cable assembly on a chain drive garage door opener. If the motor won t start when you activate it replace it with the manufacturer approved replacement part. Press down on the chain with your finger. Pull the chain toward the garage door and hold it in position.