This is a video on how to change the gear sprockets in a craftsman garage door opener.
Replace drive gear liftmaster garage door opener.
Our garage door opener gear part of kit 41a2817 41c4220a is compatible with chain drive and belt drive operators since 1984 current including the following.
This turns the chain and moves the door.
This diy repair guide explains how to replace the drive and worm gears on a chain drive garage door opener.
The most common issue that occurs is when the ridges in the gear wear out because the gear lubrication has evaporated.
The worm gear which attaches to the motor shaft meshes with the drive gear to spin the sprocket and drive the chain to open and close the garage door.
Liftmaster craftsman chamberlain sears garage master access master master mechanic security estate series raynor formula i whisper drive power drive billion code and.
If the gear and sprocket assembly breaks the motor runs but the door won t move.
Ang 20242wgrease drive gear with grease for sears crafsman liftmaster chamberlain garage door openers 1984 current 4 7 out of 5 stars 448 5 45 5.
Motor unit assembly parts rail assembly parts and installation parts for liftmaster chain drive garage door opener models 1355 1355m 1356 1356m liftmaster 1345 1345m 1346 1346m repair parts list and diagrams.
This was a craftsman model 139 53976srt.
Follow the steps in this repair guide and video to replace the gear and sprocket assembly in craftsman chamberlain and liftmaster chain drive garage door openers.
Replace a broken gear and sprocket assembly with the manufacturer approved replacement part.