Question about Sears LiftMaster Building Materials
...chain does not move. Craftsman opener quit operating the door. The motor works but the chain does not move and open/close the door. Any thoughts would be much appreciated. If the motor is working but ...
...chain drive model 553985, it will not open the door, it acts like it is trying to run the chain the wrong way. I believe it is installed properly, but it will not open the door. You can fix this by ...
Question about Sears LiftMaster Building Materials
...too loose. how tight should it be? Chain should be approximately 1/4 inch above the bottom of the rail. If you over tighten the chain will make a clicking noise when the opener runs. This is not
Question about Sears LiftMaster Building Materials
...chain drive and stuck in up position. Pushing the button to close door does not move at all. There is a humming sound like the motor is locked up. The eyes are properly lined up and there are no ...
...chain will sag slightly on one side when the door is closed and on the other side when it is open. It should not sag enough that it is dragging on the T-rail. You can adjust it at the trolley. If you ...
Question about Sears LiftMaster Building Materials
chain were not catching on anything. NO-Good. Then I disconnected the chain all together to see if the motor would turn freely. Hit the button, and gears spin temporarily then the unit starts clicking
...chain links on the sprocket at the top? I have everything back together but the door will not open or close. The motor goes on and off but nothing connects. Sincerely, Cindy sync the motor. the gear ...
not reverse I have a chamberlain garage door opener. when I press the button to close the door the motor makes a sound then stops and but nothing happens. It looks like it is trying to open it instead
...NOT WORK UNDER THIS TYPE OF LOAD, I NEED TO FREE THE CHAIN OF ITS TENSION, BUT IT WON'T MOVE, ANY SUGGESTIONS Release the door from the opener by pulling down on the rope. It will be very hard to ...
Question about Sears LiftMaster Building Materials
the other. When it is closing it will be just the opposite. It is important that you do not over tighten the chain. I suppose the wrong chain could be shipped with the opener but it wouldn't be common
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