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

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The liftmaster garage door opener issues

The door opener runs but doesnt move the door

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  • John Houtz Aug 22, 2013

    New car. How do I get the car visor button and the door opener to talk to each other?

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  • 98 Answers

If you have a Chraftsman/Liftmaster:
1.Check to see if the door is running correctly.
  A. Run the door down and pull the emergency release. See if the door will run easily by itself.
  1. If it runs hard by hand try lubricating the rollers and hinges with silicone spray or some form of lubricant (not WD 40)
  2. If the door is heavy and falls back to the ground, you probably have a spring issue (either broken or needs more tension) in this case call a professional door repair company in your area.
2. If the door runs fine your gears might br out of your opreator. Open the case and look for a white powder. If you see that and your gaers look worn repace the gaers with 41c4220a gear kit.

Posted on Jan 09, 2009

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M otor hums but door does not open


If the motor is running and the chain or belt isn't moving, you have a broken gear in the opener.

Mar 26, 2014 | Sears Craftsman LiftMaster Chamberlain...

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Have a Craftsman 1/2 HP Garage Door Opener, been working fine. Now when you start it you hear the motor running as normal but the chain doesnt move?


You must ensure the drive chain is engaged to the door puller.
Sometimes the emergency release if pulled (red cord) the drive and the coupling come separated.
Make sure the pin is back in place (pull release cord and make sure pin springs back in).
The run an open close cycle, it should pick up the drive again.


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Please dont forget to vote this answer was helpful and accept my answer.


Many thanks

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Feb 22, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener: motor runs but chain doesnt move.


Depends on your mechanical ability. The drive gear is stripped. The part number is 41A2817 and is available at any door opener service company. It comes with instructions.

Jan 31, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster door opener, motor hums but chain and door does not move. Any ideas? Thanks


If the motor is running but the chain isn't moving you have a stripped drive gear. Remove the cover from the motor unit and check. It should be obvious.

Jan 08, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftman door opener brand new wont work?


Sounds like the drive gear is stripped. Remove the cover and take a look. It is white nylon and is just in front of the motor.

Jul 04, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener motor runs, but the chain drive doesnt turn


If the chain is not moving and the motor is – you need a gear kit.

Unplug the unit - take of the cover – you will find white shavings inside – these confirm the diagnosis. .

Get the gear AND sprocket kit.

It’s a good DIY project but you MUST VERY CAREFULLY Follow the instructions step by step.

HOPE THIS HELPS

Mar 13, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Motor sounds like it is running but sprocket doesnt move


how old is unit. sounds like gears are shot, takes $25 of parts and 2-3 hours to fix if you are handy. Take cover off, If it has white powder (Not ****), gears are shot.

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

1 Answer

Everything is moving but the door isn't opening


your gears are probablly shreaded. the good news is that your motor isnt dead. you will probabllly need new gears depending upon which ones were shreaded. seeing plastic shavings and or plastic pieces inside unit is an indication of that

Dec 28, 2008 | Sears Craftsman LiftMaster Chamberlain...

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