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

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Need to tighten chain on stanley model # 3220.50 Serial code 9101

A friend said that I should look for a hexagon shaped nut in the back. Couldn't find it

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IT MAY BE ON THE FRONT END OF THE RAIL.

MANY OF THESE ADJUST WHERE THE CHAIN CONNECTS TO THE TRAVELER.

DON'T MAKE IT TOO TIGHT THE BUSHING AT THE POWER END IS PROBABLY ABOUT GONE (THIS IS WHAT CAUSES THE CHAIN TO GET LOOSE) LEAVE A SAG OF ABOUT 1.5 INCHES.

ALSO START WATCHING THE ADS FOR A GOOD DEAL ONCE THE BUSHING IS GONE THE UNIT IS TOAST - PARTS ARE NOT AVAILABLE FOR MOST STANLEY UNITS.

Posted on May 29, 2010

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I'm looking for a manual for the Stanley 3220 50 or just would like to know if it has a DIP switch, and if so, where it is. Thank you.

Posted on Feb 10, 2012

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1 Answer

How do i adjust the chain that lifts the door


Take the chain off the gear. Run the opener limit to the bottom (closed) limit. put the chain back on the gear. Loosen the set nut on the chain. Tighten the tension nut on the chain to desired tension. tighten the set nut on the chain.

Jan 04, 2015 | Building Materials

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The motor runs but the chain does not move, we just had it worked on 1 month ago and now this, please help


IF THE MOTOR IS JAMMED (JUST HUMS) LOOSEN THE CHAIN AND ADJUST THE LIMITS AND TIGHTEN CHAIN.

IF THE MOTOR ACTUALLY RUNS AND THE CHAIN DOES NOT MOVE THE DRIVE GEARS NEED TO BE REPLACED. THEY SELL A KIT THAT INCLUDES THE BUSHINGS AND SHAFT. DO NOT BUY THE SMALLER KIT AND DO NOT REPLACE ONLY ONE GEAR (THE OLDER WORN GEAR WILL CHEW UP THE NEW GEAR) THIS MAY BE WHAT YOU HAD DONE - IF SO CALL THE SERVICE GUY THAT DID THE POOR REPAIR AND HE SHOULD REPLACE BOTH GEARS UNDER HIS SERVICE WARRANTY. ANYONE WORKING ON THESE SHOULD KNOW BETTER.

GOOD LUCK.

STEVE

Dec 14, 2014 | Sears Craftsman 13953754 Wireless Garage...

1 Answer

How do I put my chain back on a Stanley 8500 Garage door opener?


First you must make sure the sprocket on the garage door opener is spinning clockwise and reaches its limit and stops, you can easily put a pair of pliers between the #1 and #2 terminals on the garage door opener and start the sprocket spinning or just grab a remote and watch from the back of the unit (looking towards garage door ) and make sure it,s direction is clockwise, Once it stops you wanna loosen the chain enough so you can position the carriage which is connected to the chain and with your door closed send the carriage down far enough so that the carriage and the trolley both engage then all you have to do is put the chain over the sprocket and tighten up the tensioner that is located on the trolley...not to tight and not to loose is what you would want in an adjustment !....now since you already ran the sprocket in the down position your door is now ready to test ...when you press your remote or wall station the door will travel up, You have to do it this way , if you don,t ..you can damage the machine or your door ! Good luck and hope I was able to help you with your dilemma!

May 07, 2014 | Stanley Building Materials

1 Answer

I just installed a craftsman garage door opener and the chain is sagging on one side and super tight on the other. When opening the door, the chain sags on both sides. I have tried tightening the nuts on...


When the door is opening the chain will be tight on one side and slack on the other. When it is closing it will be just the opposite. It is important that you do not over tighten the chain. I suppose the wrong chain could be shipped with the opener but it wouldn't be common.

Jul 29, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My garage door sometimes gets stuck and then goes


Don't tighten the chain. It sounds like you have either a broken door spring or the drive gear in the motor unit is going bad. Release the opener from the door and operate it by hand. It should be easy enough to raise that your wife can do it with no problems and it should stay put when released about waist to shoulder high.

Jul 27, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

How to tighten the chain on a liftmaster


There are adjusting nuts on the trolley. The chain should have a little slack. Do not overtighten. One side will always hang a little lower than the other. The lowest side should be about 1/4 inch above the rail.

Jun 05, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

How to reset garage door opener pad without old acess number


A Stanley garage door keypad is wall-mounted, battery-operated device that allows you to open your home's garage door electronically without having to manually lift the door or use a pull chain. The keypad uses a four-digit access code that you program after the keypad is initially installed. You can change the code, disable the keypad manually by entering a invalid code and reset the keypad if the device is not working properly. After you reset your Stanley garage door keypad, the device is ready to accept a new access code.

May 29, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears garage door opener, chain adjustment


Loosen the inner nut on the trolley. (That is the lock nut). Then tighten the outer nut on the trolley to increase tension. The outer nut on the trolley is closest to the garage door. The chain tension should be 1/2 inch off the rail at midspan. (The chain is fastened to a threaded bolt on to the trolley. The threaded bolt has an inner and outer nut). Hope this helps.

Dec 24, 2008 | Sears Craftsman LiftMaster Chamberlain...

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