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My Sears Garage Door Opener Model 139.53960srt is having a problem where the chain comes off of the sprocket when reversing during an emergency opening.

The chain on my garage door opener comes off of the sprocket when the door suddenly reverses during an emergency opening (e.g., when there is an obstruction). This has happened several times lately. Inspection of the sprocket shows that it is tilted slightly out of horizontal, and it appears that this is contributing to the chain coming off when it turns. Is this the cause and how can I fix. When I re-installed the last time, I made sure that tension was correct, so I do not suspect this to be the problem. Please help. Many thanks.

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Garage Door Openers , Garage Organization & Shelving
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Manage My Life
The Garage Door Opener is definitely something we depend on and when it begins to malfunction it can be a huge inconvenience. While you are waiting for an expert to respond, I have attached some helpful links below that may provide information to assist you with your question.
by Manage My Life
October 19th, 2011
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