Craftsman Garage Door Opener Chain Sprocket

This is a video on how to change the gear sprockets in a craftsman garage door opener. If the chain was installed too tightly on the garage door opener it can make opening the door more difficult for the automatic opener. Gear and sprocket assembly 41c4220a is an original equipment manufacturer oem part that fits most craftsman 139 series chain drive garage door openers manufactured after 1993.

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This excess tension causes the gear that moves the chain to grind down.

Craftsman garage door opener chain sprocket.

41a3589 1 liftmaster belt assy. A list of compatible openers accompanies each part. Chain rail extension kit. 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.

If the gear and sprocket assembly breaks the motor runs but the door won t move. 1 2 hp chain drive garage door opener kit. Craftsman garage door openers are trusted to do what you need them to do. If the gear becomes too worn it will no longer be able to move the chain.

Step by step instructions included free tech support available see video compatibility. This was a craftsman model 139 53976srt. This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener. For diy parts replacement projects on older garage door openers we have craftsman liftmaster kits designed for operators made between 1984 and 2000.

Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door. 41c4220a 41a2817 gear sprocket assembly replacement. Belt rail extension kit. For example our liftmaster 41c4220a chain drive gear and sprocket assembly can replace worn gears and sprockets on a sears craftsman garage door opener a liftmaster operator or a chamberlain opener.

Assembly also fits chamberlain chain drive garage door opener models 1240r 1245r 1246r 1255r and 1256r. Belt rail extension kit. For 8 door 1270 1280 1280r 74 45. Garage door gear and sprocket kit replacement for liftmaster 41c4220a fits chamberlain sears craftsman 1 3 and 1 2 hp chain drive models replaces part numbers.

Shop our garage door openers and find out where you can buy yours locally or online. We carry sears craftsman garage door opener lens covers made for use only with craftsman door operators. 41a5585 1 liftmaster chain drive gear and sprocket for 3 4 hp 4 30 71.

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