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

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Garage door opener

I installed a new opener to replace my old one. When i try to operate the unit the traverse hits the stopper screw by the pully reverses & stops.It does the same thing whether the door is engaged or not. The door won't open more than 4". I have tried ajusting the force & the door limit nothing seams to change what is happening.

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You need to re-align the drive belt - it thinks it is in the raised position, with the door on the ground.

Posted on Jul 26, 2008

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Posted on Jan 02, 2017

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Stuck in up position against unit protector bolt . . . will not move with either control . . . unit only clicks . . . appears to have opened too far compared to other doors?


Der Randy,
If you want to learn to be a garage-door-opener-mechanic, now is the time to start.
I have done a dozen of these like this.
You start by unhooking the garage door from the track, by pulling on the emergency cord that is hooked to the connector, which releases the door from the opener.
( Now, you can work it by hand, until the opener is fixed.
Remember not to let it latch again until the opener is fixed. You must watch it.)
Then carefully take the stopper bolt out of the track, and if it is highly pressurized, watch out that it does not fly out and hit you in the face.
Nope, you should be free to adjust the chain travel, electrically.
There are two adjusting screws on the opener motor that will change where the door stops and starts.
You should be able to adjust these now to get the door to open and close properly.
Once it is working properly, attach the door to the opener assembly. God bless your efforts.

May 13, 2016 | Building Materials

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I have a genie 2022 and the remotes will not work. I can only open the door with the wall unit. I tried unplugging and plugging in unit and it will work once and then back to the same old same old. Is...


there should be a red or white button on the back of the opener. hit that button then press and hold button on remote. you should hear two clicks.

Oct 25, 2013 | Genie Building Materials

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My mom has a 1/2 hp chain opener that was installed in 2000 or so. It had recently begun overdriving both closing and opening (so button had to be pressed once to stop it). I tried adjusting the raise...


Remove the cover from the motor unit and you will see the limit switch assembly. If you watch the operation I think you will understand it and be able to adjust it properly.

Nov 30, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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THE OLD STANLEY UNITS ARE NOT WORTH FIXING.

PARTS ARE NOT AVAILABLE AND THE UNIT DOES NOT MEET THE SAFETY STANDARDS

TIME TO BUY A NEW CHAMBERLAIN / LIFTMASTER / OR CRAFTSMAN OPENER

GOOD LUCK

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Liftmaster Chamberlain Garage Door Opener Transmitter 300MC: Hi, The belt that connects the motor to the pul...


IF IT IS ONE OF THE NEWER BELT DRIVE OPERATORS THE BELT ATTACHMENT IS ADJUSTABLE.

IF IT IS ONE OF THE VERY OLD OPERATORS AND YOU IN FACT HAVE THE CORRECT BELT YOU CAN NORMALLY SET THE BELT ON THE SMALL PULLY AND LAY IT AGAINST THE LARGE PULLY BY TURNING THE LARGE PULLY YOIU CAN ROLL IT ON.

May 16, 2010 | liftmaster Chamberlain Garage Door Opener...

2 Answers

Have to hit the button on the opener about 10 times to get the door to go up. will open partially and stop. closes fine.


Check your door springs. You may have a broken spring. If not you can increase the up force. This is a control on the rear of the motor unit near where all those white go.

You may be in the beginning stages of a bad drive gear. Remove the cover and you will see it. It is white nylon and is just in front of the motor.

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

1 Answer

I have a non-functioning keypad for my Liftmaster garage door. It's 8 years old. In the past changing the battery has remedied the problem. This time I changed the battery twice with no success. The light...


First of all, did you try recoding unit by hitting LEARN BUTTON on motor. Try that. If n/g, try a new code with a number you did not use. Example, if old code was 5834, try 2222. If it works, one of the numer from you old code is worn out. Try new code or buy new pad.

Jan 14, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Do I need to replace everything, if I buy a new garage door open.


My 15 year old system broke down due to a worn screw drive. While parts like this can be replaced, it takes a bit of guts to work inside the motor, and the circuit board. I chose to buy a new unit. New units come with all the parts ... so you don't really save much, Depending on how old the system is, the old accessories may or may not work. Even though my old 1/2 H.P. motor was a chain drive, when I bought a new screw drive the mounting parts on the ceiling and on the wall above the door were compatable. So while you get the new parts in the box, you can use the old parts if it saves you time. I was not able to save the electic eye components as the number of wire leads was slightly different in the new model. It took me and my son about 2 hours to get the old one down and the new on up. Hope that helps. (by the way, the new chain drive is quicker and quieter)

Jan 08, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garrage door opener won't open all the way and sometimes it won't close also


If the door runs fine then check the up force and down force on your operator (the box that hangs from the ceiling). If the light(s) on your operator go from front and/or back, the force adjustment screw is on the back of the operator. If the lights are on the sides of the operator then the force adjustment screw is on the right side (looking from the back of the operator and facing the garage door). Turn the light blue adjustment screw with the up/down arrow to a higher number.

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

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