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

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Need to install a model 9100 garage door but can not figure out how to install rails for door to open and operate

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There are step by step instructions for installing a door at this site.

http://www.aaaremotes.com/garagedoorinstallation.html

Posted on May 18, 2010

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1 Answer

Why does garage door opener only move a few inches?


Check the spring above the door, mine would go up a couple of inches and we found that the spring had broke.

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Change out all the track. It is not a difficult job, and the tracks will line up. If you are talking about the rail that the chun runs just throw the old opener away and use the parts thet are it the box, You may damage new unit trying to install old rail, aqnd there is no warranty or exchanges for owner cause damage.

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My chamberlain liftmaster works fine but when I open the garage it makes asqeaking grinding sound. what should I do?


the rails on the door frame that the door follows to raise and lower need lubrication,clean rails thoroughly then use a light weight grease and lube the rails and oil the rollers on the sides of the door that follow the rails,also oil the screw or chain that raises and lowers the door from the operator unit,this will make them operate easier and quieter

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I just installed a new 'rack' to my Craftsman Garage door opener on the screw drive rail system. It now goes up and won't go down. How do I adjust the up / down limits to get it going?


You will need to release the door from the opener and then open the door manually and make a mark on the t-rail where the trolley is. Then remove the t-rail from the motor unit and manually run the rack to the mark on the t-rail. Now run the motor until it runs and stops in the up position. Reassemble all the pieces. This will get everything back into sync.

Feb 21, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Belt drive track arm bows up


YOU MAY NEED TO GET THE SPRING ON THE DOOR ADJUSTED.

WHEN AN OPENER IS INSTALLED THE SPRING SHOULD BE SET A LITTLE HEAVY. YOU WANT THE DOOR TO SLOWLY DRIFT CLOSED IF LEFT HALFWAY UP.

IT SOUNDS LIKE EITHER YOUR SPRING NEEDS ADJUSTMENT OR THE DOOR BINDS AT THE BOTTOM - HOW DOES IT WORK MANUALLY??

IF YOU CAN'T CLOSE IT WITH 3 FINGERS THE OPENER WILL HAVE TROUBLE.

YES THE CRAFTSMAN RAIL IS WEAK MAKING IT THAT MUCH MORE CRITICAL TO SET THE HEIGHT PER INSTRUCTIONS AND MAKE SURE THE DOOR WORKS EASILY,

HOPE THIS HELPS

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

1 Answer

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IS THE UNIT JAMMED AGAINST THE STOP BOLT ON THE RAIL??

IF IT IS THE CHAIN WILL NEED TO BE RESET RECHECK YOUR INSTRUCTION SHEET.

IF NOT DOWNLOAD THE INSTRUCTION MANUAL FOR YOUR OPERATOR AND GO THROUGH THE DIAGNOSTICS.

HOPE THIS HELPS

Mar 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The garage door has power coming to it . When I press the remote the unit makes a humming sound but nothing happens at all


clicking can be an overheated motor from trying to much. other idea is troley opened too far and lodged against bolt on rail by motor.

Dec 17, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Door Opener for 16 ft. door.


Sears sells RAIL EXTENDER KITS for most of thir GDO'S, mostly for residential applications. Go to www.SEARS.com, type GARAGE DOOR OPENERS in the SEARCH box. The first item that comes up is a 10 foot long GDO extension , item #00953727000, mfr model #53727.

Aug 13, 2008 | Sears Craftsman LiftMaster Chamberlain...

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