Craftsman 1/2hp garage door opener does not go down to floor
Craftsman 1/2hp garage door opener, chain driven, about 20 years old
does not go all the way to the floor when closing.
Stops about 3" from floor.
side adjusting screws do not effect travel.
Re: Craftsman 1/2hp garage door opener does not go down...
I'm no expert, but on a previous door opener I had (don't know the brand), the side adjusting screw basically adjusted a limit switch, which was located inside the plastic housing (where the motor is). I was able to remove the housing, figure out which limit switch was actually being contacted "too soon" on the way down and adjusted it while watching it.
Just a suggestion, you might take a look.
just keep your hands out of the way of the chain and sprocket if you do take the housing off. .
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Chamberlain GroupFasten the manual near the garage door after installation. .... This garage door openerhas been designed and tested to offer safe service provided it is installed, ...
Clean the chain rail with a solvent that can remove old lubricant. Re lube with Lithium based lubricant that does not "harden" when the temperature drops - other types of lubricant tend to "harden" with lower temperature that strains the movement of the door. Clean excessive lubricant from the rail as it can drip onto your vehicle.
Loosen the chain enough
so that you can remove it from the sprocket above the motor unit.
With the door closed run the motor until the sprocket turns clockwise
and stops. With everything attached replace and tighten the chain.
Some adjusting of the up and down limits will probably be required.
It sounds like you did a really good job! My Craftsman 1/2 hp gar. dr. opener has a red reset button on it on the l/h side as you are looking at the light/motor from the garage door opening. You have to take the light cover off to be able to see it. My reset button is on the same side as the ground wire. You might check the ground wire while you're there. I really hope that this fixes it for you (and me). I'm quite sure it will as you know your way around the garage door opener already. Good Luck and Let me Know (Please) if it fixed it or not. If I think of anything else, I'll let you know. Have a Good Day!