How To Replace Craftsman Garage Door Chain

I am not a professional.

How to replace craftsman garage door chain.

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. 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 the chain and cable assembly breaks the door won t move. If the motor won t start when you activate it replace it with the manufacturer approved replacement part. The motor turns the sprocket which drives the chain to open and close the door. This diy repair guide explains how to replace the chain and cable assembly on a chain drive garage door opener.

This is a video on how to change the gear sprockets in a craftsman garage door opener. Follow these steps to replace the motor in craftsman chamberlain and liftmaster chain drive garage door openers. Documenting how i repaired the garage door. This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener.

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. My sears chain drive garage door opener s main gear is worn. I replaced just the main gear with the sprocket and shaft assembly for 25 or so from a supplie.

This diy repair guide explains how to replace the motor on a chain drive garage door opener. The chain and cable assembly connects to the trolley and drives the trolley along the rail to raise and lower the door. The chain got loose and popped off the gear. This was a craftsman model 139 53976srt.