Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo
Posted on Dec 03, 2008
Answered

Craftsman Garage Door Opener Won't Open

All of a sudden today the motor for the garage door opener runs but the chain doesn't move and the door doesn't open. Any suggestions?

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  • darapegg Dec 08, 2008

    Because it's way too cold here this time of year to live without an opener and because my husband isn't really very handy, I did have a garage door repair person come over. It was indeed a stripped gear. Thanks for your help.

  • boobooqt Dec 29, 2008

    The garage door motor works but the chain is not moving.

  • Anonymous Feb 26, 2009

    Hi reschlud
    i have the same problem - how do I check the motor box? Will I see it if I get up there?
    Thanks

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  • Posted on Dec 07, 2008
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When mine did this, it was because the nylon gears that drive the chain had stripped. My wife had to live without the opener for a week or more, but I was able to find a new gear kit online and replace the damaged gears. It wasn't difficult.
The other option is to buy a new opener.

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  • Posted on Dec 10, 2008
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Check the gear on top of the motor box.A set screw probably came loose that holds the chain gear to the motor shaft.

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