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

1 Answer

Opening theGarage door manually

I disconnect the trolley to lift the garage door manually but for some reason the door only rolls back down and not stay opened. There must be something that is not connecting. Can you help?

Posted by on

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Champion:

    An expert who has answered 200 questions.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 244 Answers

Two problems. why aren't inner and outter trolley connecting. did you leave rope is disconnect position. Second problem is door springs do not seem balanced. you should be able to lift door halve way up and let go. it should pretty much stay there; go up or down slowly ok. fly up or crash down; need to adjust springs/cables or maybe wrong springs.

Posted on Jan 15, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Sears garage door opener model 139.53919


The torsion springs might need adjustment.

Pull emergency release, and manually lift door to half-open position.

When you release the door, it should stay in place.
If it almost "slams" down, the springs are not doing their job to "balance" the weight of the door itself.
The opener isn't designed to overcome the weight of the unsupported (no spring assist) door.

Over time, the springs take a "set", and might need a readjustment
THIS IS A JOB FOR PROFESSIONALS!!!
The springs are under tremendous pressure loading, and can even kill someone if they do not know what they are doing!

Feb 04, 2014 | Garage Doors

1 Answer

1/2 horse garage door opener doesn,t open all the way. I need about a foot more lift. The tried a trolley stops before the stop limit..Therre is no interference. I Tried adjusting the up limit to no...


You said you adjusted the up limit already. Is it adjusted as far as possible? Usually the screw will become harder to turn. You mention a new door and spring but is the opener the same? My guess is you have a new opener as well and it is out of sync with the trolley. Try turning the up limit back and see if the trolley will stop shorter. If it does, loosen the chain or belt so that you can remove if from the opener's drive gear. Bring the trolley to your stop limit and put the chain/belt back on the gear. Adjust the chain/gear tension and try door operation again. If it was a sync problem, the door should close closer to your limit. Adjust up and down travel as necessary to fine tune it. This worked for me so good luck.

Sep 18, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have Chamberlain 1160 Lift-Master farage opener. Currently the trolley stuck in the upped position agains the bolt and does not go back. When I try to close the door, the motor is humming twice, then...


Loosen the chain to remove the strain from it and run the motor until the door closes. While the door is closed locate the 'up limit' on the side of the motor unit and turn this control 2 complete turns in the opposite direction of the arrow printed on the cover. Now you can tighten the chain.

Oct 25, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener wont switch from manual to electric again


I think what you mean is you pulled the rope to open and close the door manually and now you can't get the two halves of the trolley to reconnect.
If so, pull straight down on the rope and release. Then run the door so the two halves of the trolley connect. You may have to do that last step manually. If this isn't your problem post back.

Jan 24, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Door can be opened manually when the trolley has


You can adjust the length of the arm between the trolley and door so that it is in a vertical position when the door is closed. This will prevent your problem.

Oct 03, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opens 1 foot, then stops.


It sure sounds like you have a broken door spring. While you are at it remove the cover and take a good look at the drive gear. It is white nylon and is just in front of the motor. Might be stripped and unable to take the weight of the door.

Jun 24, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Gaarage Door


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.

Jan 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door won't go down because of interference


IF YOU ARE TALKING ABOUT THE JOINTS IN THE RAIL THE TROLLEY TRAVELS ON THEY USSUALLY ONLY GET OUT OF ALIGNMENT WHEN THE BOLTS THAT HOLD THE SECTIONS TOGETHER ARE LOOSE.

Dec 01, 2008 | Sears Craftsman LiftMaster Chamberlain...

Not finding what you are looking for?
Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo

109 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Garage Doors Experts

Al Clark

Level 2 Expert

290 Answers

Cindy Wells

Level 3 Expert

4754 Answers

Pieter Vleeshouwers

Level 3 Expert

1410 Answers

Are you a Sears Garage Door Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...