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

1 Answer

Garage Door Opener

Good day

After the severe snow storm on the weekend,my garage door closes to the sensors and then goes back up again.
In the book is says to adjust the force my turning something on the back of the main motor. How much do I turn it and would this be the problem solved?
Thank you
J. Watt

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Contributor
  • 504 Answers

IF YOUR SAFETY EYES ARE MOUNTED TO THE TRACK THEY MAY BE MOVING OUT OF ALIGNMENT AS THE DOOR NEARS THE CLOSED POSITION.
WILL THE DOOR CLOSE NORMALLY IF YOU HOLD DOWN THE WALL BUTTON?
IF THE DOOR CLOSES NORMALLY YOU ARE OVERRIDING THE SAFETY EYES AND WILL FIND THE PROBLEM THERE.
IF IT STILL STOPS THE DOOR MAY BE TOO TIGHT AT THE FLOOR - HOW DOES IT WORK MANUALLY?

IF THE DOOR SEEMS OK MANUALLY THEN CHECK THE SENSITIVITY IT IS ONLY 3/4 TURN FROM MIN. TO MAX. SMALL ADJUSTMENTS 1/8 TURN AT A TIME CLOCKWISE - DO NOT SET THIS ANY FURTHER THAN YOU NEED - IT IS A SAFETY ISSUE.

HOPE THIS HELPS

Posted on Jun 05, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

Garage door opener


The green eye receives the the signal from the Amber side. When is not on the sensors won't work. As far as the cold chamberlain did have a few issues with sensors not working or intermediate issues in cold weather. Their solution was to replace the sensors. But before you do that check everywhere the wires are stapled. Make sure that they are not pinching the wires.

Jan 01, 2015 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opens about 4 inches, stops, then goes back down. No flashing lights at all. One sensor light is green, the other is a steady yellow. What's the issue?


something may be obstructing the door, so pull the red emergency release handle and try to pull the door manually.if you cant move it manually, call for professional help

make sure all snow and debris are clear of the area where the door closes

if there are no obstructions, manually set the adjustment controls on the back side of the opener panel. weather can sometimes change the amount of force needed to open/close. adjust the setting with a screwdriver to no more than 260 degrees, about 3/4 of a turn

Feb 09, 2013 | Craftsman Garage Door Opener 1/2 HP Chain...

1 Answer

My garage door will only close to about 80%, and then reverse itself by opening up again. This has never happened before. P.S. This happened during the first major snow storm in our region.


If when the door reverses the main light flashes 10 times you have a door sensor problem. Make sure they are pointed at one another and that the small light on each one is lit and not flickering. Tweak them a bit if necessary. If you can't get both lights to come on you have a bad sensor.

Dec 05, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Older model 1/3 hp craftsman goes up not down with remote


Your door sensors are either bad or need simply to be aligned. They must be pointed at one another to work properly. Each of them has a small light that will be lit when they are pointed correctly.

Sep 16, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Have to hold the push button inside my garage to close garage.


You have a door sensor problem. Make sure the sensors are pointed at one another and the small light on each one is lit and not blinking. Also check the wiring.

Jul 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

My garage door opener reaches the laser beam and goes back up


Hi,
Have checked to make shur nothing on the Door is sticking out into the path of the beam. Most door I know of are set so that anythig breaking the beam, while the door is in motion, will send it back up. the beam dosnt stop being looked at till the doors been all the way closed for a second or two.

You might want to look at the part of the door that reaches the laser just before it goes back up, it dosent take much to break the beam, a piece of string could do it.

Hope this Helps
Gem

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

1 Answer

Chamberplain Garage Door Opener problem


IF U HAVE TWO EYE,SENSORS ON EACH SIDE OF THE DOOR SEE IF SOMETHING IS BLOCKING THE EYES OR SOETHING IS COVERING THEM, OR THEY ARE OUT OF ALIGNMENT, ONE SHOULD SHOW GREEN, AND ONE RED EYE, GOOD LOCK

Jan 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Changed gear box in craftsman garage door opener


you did not give enough info. If it closes completely and right away goes up, if bulb blinking. if it is, something on door is blocking safety beam. If light is not blinking, DECREASE down travel.

Jan 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Door Opener Intermittingly Reversing


try adjusted the sensor controls on the sode of the unit other wise replace the logic board
http://www.chamberlain-garage-door-openers.com/circuitboardcompatibilitychart.htm

Dec 24, 2007 | Sears Craftsman LiftMaster Chamberlain...

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

110 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

4757 Answers

Pieter Vleeshouwers

Level 3 Expert

1413 Answers

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

Answer questions

Manuals & User Guides

Loading...