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

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During a power outage I pulled the rope to release the door so I could open manually. Now I can't get the door lifter to reconnect with the chain drive. Sears 1/2 hp, about 8 years old.

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Pull straight down on the rope and then release. Now move the door so the two halves of the trolley line up and it should snap back together.

Posted on Feb 08, 2010


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How to open the door if no electricity

Almost all garage door openers have a switch mechanism that will allow you to open the door manually. It is usually a pull cord on the motor or track. Pulling it down usually deactivates automatic mode. Just pull it up into position when the electricity comes back on.

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You have to make sure the trolley on the drive engages with the catch on the door. You may have to lift the door to the point it will engage while you are running the trolley in the close mode. Check that the trolley latch is open and ready to engage the catch. There is usually a rope to pull on to do this.

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Liftmaster 1265 closes and then immediately opens garage door. Pulling chain release does not release chain. Only way to keep door closed is power shut-off; performing very rapid return when reaches...

There are two possibilities here. First is if the main light flashes 10 times when the door reverses it is a door sensor problem. Make sure the sensors are pointed at one another and the small light on each one is lit and not flickering. Tweak them a little. If you cannot get both lights to come on you have bad sensors.

Second is if the door is reversing when it hits the floor. This is a problem with the door traveling too far in the down direction. Locate the 'down limit' located on the side of the motor unit and turn it a bit in the opposite direction of the arrow printed on the cover. Some tweaking may be necessary.

To release the door with the rope - pull straight down and then pull the rope in the direction away from the door. This should lock the mechanism in the open position. To release this pull straight down and release.

Sep 15, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Chain broke, I reconnected the chain, udjusted it so it was tight and now the short side is loose hanging low and the longer side from gear to gear is extremely tight, under tension. HOW DO I REMOVE THE...

Release the door from the opener by pulling down on the rope. It will be very hard to pull. This should release the tension on the chain but I think you need professional help with this opener. It sounds like it is badly out of adjustment. The chain coming off is an indication of a worn bearing that will have to be replaced.

Jun 06, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

We cannot figure out how to get the chain to connect and stay connected without coming loose. What do we use to reconnect it.

If you pull straight down on the rope and release it the 2 halves of the trolley should lock together. There is a small spring on the part the ropes is connected to. If that is broken or missing you will have a problem. If these don't help you may have a bad trolley.

Dec 02, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Chamberlain Garage - Used Release to open garage

To make sure the trolley will engage properly pull straight down on the rope and release. Then you can either run the opener or move the door by hand. One way or the other it should connect for you.

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The chain and bracket should automatically engage the door's bracket just use the remote as normal,

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Need to reconnect the carriage on garage door opener.

depends on which carraige. try pulling rope straight down and lifting door to open inner troley

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