Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Gaarage Door I'm opening the garage door manually. I disconnected the trolley to do this. When I lift up the garage door is there something to keep the garage door up. After I remove my hand off the handle the door just rolls back down. I dont know what type of mechanism is used to keep the door up. The door works fine using the remote mode.

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Have you looked on both sides of the door at the bottom there should be cables. If they are not tight you probably have a damaged spring. Look up between the door and where the roller mounts are, there should be a tightly wound spring. This is what keeps the door up, if tension is lost then it will come back down. If it is broken it needs professional attention.

Posted on Jan 06, 2009

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