Craftsman Garage Door Opener Chain Off Sprocket

Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.

Craftsman garage door opener chain off sprocket.

This is a video on how to change the gear sprockets in a craftsman garage door opener. 41a5585 1 liftmaster chain drive gear and sprocket for 3 4 hp 4 30 71. You can put the chain back on your automatic garage door opener using a simple adjustment mechanism. Chain driven garage door openers should have some slack in the chain for optimal performance.

Loosen the inside nut and back it off 6 8 turns back the outside nut off 5 6 turns this will give you some slack in the chain. There are a number of reasons why the motor will run but the chain doesn t move. Belt rail extension kit. Craftsman garage door openers are trusted to do what you need them to do.

Chain rail extension kit. Belt rail extension kit. If you are outside the door when this occurs you will need some assistance to move the door manually. The chain is attached to a threaded rod that is attached to the trolley.

Amazon s choice for craftsman garage door sprocket replacement for liftmaster 41c4220a gear and sprocket kit fits chamberlain sears craftsman 1 3 and 1 2 hp chain drive models 4 8 out of 5 stars 1 216. We carry sears craftsman garage door opener lens covers made for use only with craftsman door operators. Getting out of the car at the end of a long day to open the garage door can be frustrating especially when the automatic garage door opener sounds like it s working but isn t. This will release the door from the garage door opener.

This was a craftsman model 139 53976srt. For 8 door 1270 1280 1280r 74 45. A list of compatible openers accompanies each part. Shop our garage door openers and find out where you can buy yours locally or online.

This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener. Make sure the cable is inside the cable pulley and run the chain around the sprocket. If you find that your garage door opener chain falls off the track on which it has been placed you will need to put it back up and then tighten the chain to stop this happening in the future. 41a3589 1 liftmaster belt assy.

Keep it propped open while you fix the chain.