This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener.
Garage door opener gear replacement.
This was a craftsman model 139 53976srt.
This is the plastic gear that comes in direct contact with the worm drive gear on the motor.
You ll need to get a replacement gear set.
High quality rigorously tested and durable only chamberlain genuine parts are recommended for repairing your garage door opener.
It can be a complicated repair but not impossible to do yourself.
So if you suddenly find that the motor on your garage door opener sounds like it s running but the door is not moving checking for worn gears is the first thing you should do.
If the gear and sprocket assembly breaks the motor runs but the door won t move.
Shredded plastic gears are a common problem with chain driven garage door openers.
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It s one of the most common garage door opener repair problems there is.
See full descriptions for garage door opener compatibility by model numbers.
Garage door installation and replacement costs may vary according to style and size.
This is a video on how to change the gear sprockets in a craftsman garage door opener.
Fortunately the repair is neither difficult nor expensive and it should only take an hour of your time.
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Several components will need to be removed to get at the gear.
This home depot guide will explain the cost to install garage doors and openers or replace existing ones so you can decide which options are best for your budget.
Need help locating replacement parts and accessories for your model.