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

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Have a lift master garage door opener (manufactured in 1998), FCC ID:HBW1127, Part # 418A5021-c. The main plastic drive gear is stripped (not the worm gear). Can I replace the gear and how much. How to a check to see why it got striped in the first place or do you recommend replace with a new unit. The unit work great up to this point.

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You can replace that. The part number is 41A2817. It comes with a set of instructions.

Posted on Jul 08, 2010

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2 Answers

The drive chain of my lift master doe not turn when I try opening my garage door even the garage door is disconnected


Sounds like the gear inside the garage door opener needs to be replaced.
If you take the cover off you should see a lot of white powder inside the bottom of the garage door opener case.
You will also see a large plastic white gear that it shredded.

Feb 15, 2015 | Building Materials

1 Answer

I need a new remote for lift master garage door opener with part number 41A3627 and cert # K710 FCC ID HBW1D3605


Those numbers won't help. The model number is on the opposite end of the opener from where you found those.

Oct 02, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Hi my home have a lift master garage opner this mornig when i try to open but door open only 1 feet not full i try soooo many time but same i chek sensor but same thige


You need to take a look at the door springs to see if one of them is broken. Also remove the cover from the motor unit and check the drive gear. It is a white nylon gear and is just in front of the motor. It may be stripped. It will be obvious if it is.

Jan 11, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The lightbulb in the unit burns out quickly, every 4-6 weeks. I have Lift Master 1/3 H.P. FCC ID #HBW1127, Part #41A4252-7D


You can buy bulbs designed for garage door openers. They are heavier duty. Also you should unplug the unit and remove the light bulb. Pull out on the center contact of the socket. Replace the bulb and plug the unit in.

Oct 17, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

When I push the button to open my garage door, the


Remove the cover and take a look at the drive gear. It is white nylon and is just in front of the motor. It is probably stripped. It is a good time to release the door from the opener and try raising it by hand. Your door springs may be weak or possibly broken.

Oct 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The nylon drive gear on Craftsman Garage Door keep stripping


The most common reason for this is a door that is too heavy. Release the door from the opener and lift it by hand. If it is heavy to you it is heavy for the opener. Be sure after replacing the gear to lubricate it heavily with the lubricant supplied with the gear. You can't apply too much.

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

1 Answer

Garage door does not function makes couple of buzzing sounds only


Remove the cover and check out the drive gear. It is white nylon and is probably stripped.

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

1 Answer

Lift-master 1265 Garage Door opener


Open case, & see if white shavings from gear stripped out are laying on bottom of case.

Dec 15, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Chain gear is stripped//garage door opener //lift master 1/3 hp


I made a webpage that includes the instructions that come with the gear kit. How to replace the gears, reset the travel settings, lots of pictures, part lists and numbers.
http://tinyurl.com/gearfix
cb953ba.jpg

Nov 10, 2008 | Sears Craftsman LiftMaster Chamberlain...

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