Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo
Posted on Jan 16, 2009

Garage door opener motor will not open garage door

I have a craftsman 1/2 hp chain driven garage door opener that is 10-15 years old. I replaced the large plastic gear inside the motor housing. The motor was working before disassembly but wouldn't open the door because the plasitic teeth on the gear were worn down too much to mesh with the worm gear.
After installing the plastic gear and worm gear I pressed the wall mounted switch. The motor doesn't turn on at all. The yellow light located in the motor housing(opposite of the light bulb) blinks.
Why is the yellow light blinking?

Thanks,
Mark Chastain
913-381-5426

1 Answer

Anonymous

Level 1:

An expert who has achieved level 1.

MVP:

An expert that got 5 achievements.

Governor:

An expert whose answer got voted for 20 times.

Scholar:

An expert who has written 20 answers of more than 400 characters.

  • Contributor 30 Answers
  • Posted on Jan 16, 2009
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

MVP:

An expert that got 5 achievements.

Governor:

An expert whose answer got voted for 20 times.

Scholar:

An expert who has written 20 answers of more than 400 characters.

Joined: Jan 11, 2009
Answers
30
Questions
0
Helped
10627
Points
80

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!

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
2answers

Don't know Mod. No. lost installation manual, approx. 5 yrs. old Need installation manual.

About 496,000 results (0.43 seconds) Search Results

    [PDF]GARAGE DOOR OPENER Model 3265 1/2 HP ... - LiftMaster

    www.liftmaster.com/.../en.../tucmanuals/114a3044.pdf 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, ...

    Manuals Download Craftsman Garage Door Opener Model ...

    www.craftsman.com/search=manuals%20download%20crafts...

    CraftsmanCraftsman has the best selection of Garage Door Openers in stock. Get the Garage Door Openers you want from the brands you love today at Craftsman.

    Craftsman 1/2 HP Chain Drive Garage Door Opener - Sears

    www.craftsman.com > ... > Garage Door Openers

    Craftsman1/2 hp Chain Drive Garage Door Opener Opens by Remote, Inside and from Car Enjoy a great end to every day by ... Owners manual - English (Warranty).

    Free Craftsman Garage Door Opener User Manuals ...

0helpful
1answer

Garage door doesn't open and close properly

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.


4helpful
2answers

Garage door opener won't open or close door

The drive gear is stripped. Remove the cover and you can see it just in front of the motor. It is white nylon and the part number is 41A2817. Available from Sears or any good door opener service company. It will come with instructions.
0helpful
1answer

Garage door doesn't open or close

You should check the gears inside the box, After years , the gears get dry and die, you can by online or from Sears the kit and replace the old gears. I just changed mine...not too difficult :) .
0helpful
1answer

Craftsman 1/2hp garage door opener does not go down to floor

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. .
0helpful
1answer

Garage door opener motor doesn't work.

2 flashes is a safety eye issue, but you problen is most likely that the chain is not sync with the limit setting. Take the bottom off the gear and sprocket assemble and rotate center limit srew until it is in the same position as the trolley.
1helpful
1answer

Garage Door opener will not opern

2 flashes indicate safety eye issue. Check you wiring and make sure it is wired correctly and check to make sure the eyes are properly aligned.
Not finding what you are looking for?

673 views

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts

Cindy Wells

Level 3 Expert

6688 Answers

Brad Brown

Level 3 Expert

19187 Answers

hsapiens

Level 1 Expert

6 Answers

Are you a Sears Building Material Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...