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garage door opener won"t open or close. motor runs but chain doesn"t rotate nor sprocket

craftsman 1/2 hp garage door dpener-model no. 139.5364srt

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Craftsman , Garage Door Openers
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Manage My Life
THis indicates that the nylon drive gear has worn out. This part can be replaced. Although the model number should have 8 numbers so make sure and check that. If you need a replacement part go to searspartsdirect.com, enter in your model number and a parts list will come up. This should take you 1-1.5 hours to replace or you can call a reputable service company. Thanks BB
by Manage My Life
July 19th, 2010
Answered in 3 hours
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Manage My Life
Remove the cover from the motor unit and check the drive gear. It is a white nylon gear just in front of the motor. You will find it is stripped. The parts number is 41A2817 and is available at any good door service company and Sears parts.
by Manage My Life
July 19th, 2010
Answered in 40 minutes
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Manage My Life
Hi, I see your garage door won't open or close. You can visit our ManageMyLife.com website click on Manuals put in model number. I attached the link below. Hope this helps!
by Manage My Life
July 19th, 2010
Answered in 22 minutes
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