A list of compatible openers accompanies each part.
Craftsman garage door opener chain sprocket.
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.
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.
For 8 door 1270 1280 1280r 74 45.
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.
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.
1 2 hp chain drive garage door opener kit.
If the gear becomes too worn it will no longer be able to move the chain.
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.
Chain rail extension kit.
This was a craftsman model 139 53976srt.
For diy parts replacement projects on older garage door openers we have craftsman liftmaster kits designed for operators made between 1984 and 2000.
Craftsman garage door openers are trusted to do what you need them to do.
Shop our garage door openers and find out where you can buy yours locally or online.
This excess tension causes the gear that moves the chain to grind down.
If the gear and sprocket assembly breaks the motor runs but the door won t move.
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.
This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener.
41a3589 1 liftmaster belt assy.
Belt rail extension kit.
Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.