Chamberlain & Liftmaster Garage Doors "door chain moves open" Questions

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Question about Chamberlain Building Materials

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...door with cord. The chain and gear still do not move. I can hear motor but no gear or chain movement. Any thoughts....does opener need replaced Your drive gear must be stripped. Remove the cover and ...

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Question about Chamberlain Building Materials

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...chain moves but door only opens 3 inches are so. Have ajusted opening cointrol on side to max and only 3 inches. When I unlatch GD from trolly, move on track but only part way does not move to end of ...

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Question about Chamberlain Building Materials

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door operner and now my chain will only move for about a sec. or two then stop. Does anyone know what might be the problem. Thank You check to see if the springs that open the door have broken if they

Question about Chamberlain Building Materials

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...door off chain and chain in up position motor only moves chain 1/8 inch or so). Have disconnected wiring to magic eyes on one door and still both door misbehave,... gggrrrrr lol. Have struggled with ...

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...door and give chain a horizontal poke, it will move. When I reconnect door it returns to humming, without movement. Remove the cover from the motor unit and you will find the drive gear has stripped. ...

Question about Chamberlain Building Materials

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...chain back on and now the door doesn't close all the way.take the cover off and look at the limit switch,this the travel adjustment. The switch for the close side is making contact too soon so it ...

Question about Chamberlain Building Materials

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...chain drive only opens door ~6" Replaced a 25+ year old Chamberlain 1/2 hp chain drive that died w/ a Craftsman 95320 1/2 hp chain drive. Did not replace rail or chain both of which seem in very good ...

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door open or close. The chains and cable are not bound up. I unhooked the chain assembly and the motor sprocket still will not move Remove the cover from the motor unit and check the drive gear. It is

Question about Chamberlain Building Materials

1 Answer

...door. The motor works but the chain does not move and open/close the door. Any thoughts would be much appreciated. If the motor is working but the chain does not move you must remove the cover on the ...

Question about Chamberlain Building Materials

1 Answer

...door and tried; same results - the chain moves about 1 foot and then reverses to the start. Nothing is blocking the chain, its not damaged. Remove the cover from the motor unit and check the drive ...

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