0012381004034
Discontinued

Chamberlain

Model CG40D

Internet #202413356

1/2 HP Chain Drive Garage Door Opener-DISCONTINUED

This item has been discontinued.
The Home Depot no longer carries this specific product.

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Product Overview

The CG40D 1/2 Hp chain drive is steady and reliable. Its durable 1/2 Hp motor and chain drive provide continual steady performance. This model has earned the good housekeeping seal. Quick-install rail system provides faster and easier installation and assembles in 60 seconds.

  • Delivers 75 watts of light with adjustable light time delay
  • Includes one single-button remote control and an illuminated door control button
  • Home Link compatible with the in-vehicle remote control system
  • 1/2 HP motor with industrial-strength, rugged chain drive
  • Quick-and-easy-to-install 5-piece rail system fits most garages with 7 ft. high garage doors. Extension kits are required for garage doors that are 8 ft. (model 7708CB) or 10 ft. (7710CB) in height

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Customer Questions & Answers

36 Questions113 Answers

Customer Questions & Answers

1/2 HP Chain Drive Garage Door Opener-DISCONTINUED
1/2 HP Chain Drive Garage Door Opener-DISCONTINUED

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5 answers

my 1/2chain Drive Garage Door Opener will not go up chain go around but door will go up HELP PLS/

This question is from 1/2 HP Chain Drive Garage Door Opener-DISCONTINUED
Asked by
FRED
FT,WASHINGTON M.D.
January 16, 2013
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Answers (5)

Asked by
Columbia, SC, USA
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February 8, 2013
Answer: 
Is the chain actually moving? If it is then your trolley isn't locking in. Check the trolley release arm and make sure it it's in the horizontal position. If it's just the motor running but the chain isn't actually moving then the main "nylon" drive gear is probably broken or shredded. I had that happen. If it's broken you can replace the gear for about $15.00. If it's shredded (like mine) I don't know Read More
Is the chain actually moving? If it is then your trolley isn't locking in. Check the trolley release arm and make sure it it's in the horizontal position. If it's just the motor running but the chain isn't actually moving then the main "nylon" drive gear is probably broken or shredded. I had that happen. If it's broken you can replace the gear for about $15.00. If it's shredded (like mine) I don't know if I would bother. I replaced the gear on mine and it just shredded it again. So that would mean, also replacing the worm gear and drive gear. If it shredded it again then that would mean one or both (drive gear shaft; worm gear shaft) of the drive shaft(s) are out of alignment or bent. You see where this is going? Read Less
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Asked by
46307
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February 5, 2013
Answer: 
Make sure your trolley is engaged to the chain. There is a release to open and close door without the opener. If it is released, chain will just turn on gears. Trolley should have a red handle attached to it, just make sure it snaps back into the chain.
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Asked by
Bella Vista, AR, USA
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January 30, 2013
Answer: 
there should be a RED pull cord on what is called a trolley. it sound s like this is disengaged. you have re engage. this unit. just pull on the red cord. push your remote. if the door is in the down possition pull up on the door slowly while you press the remote watch the trolley. carrage it will have to meet in order to RE-ENGAGE. these two have to join. hope this helps. good luck...AL
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Asked by
Western, NY, USA
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January 18, 2013
Answer: 
It must be that the catch on the chain is not attaching to the bracket to the door. This bracket allows the door to be detached from the chain in order to be able to open the door manually in case of a malfunction of the door opener. Once detached, usually by pulling the hanging cord, the chain will not open the door. In your case pull on the cord to reset the catch then cycle the opener. This should Read More
It must be that the catch on the chain is not attaching to the bracket to the door. This bracket allows the door to be detached from the chain in order to be able to open the door manually in case of a malfunction of the door opener. Once detached, usually by pulling the hanging cord, the chain will not open the door. In your case pull on the cord to reset the catch then cycle the opener. This should reattach the bracket when the chain cycles. You may have to reset the latch by hand if it is stuck in the open position. Read Less
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Asked by
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January 18, 2013
Answer: 
Fred - I am assuming that the chain goes around but nothing else moves - I would suspect that the emergency pull cord has been pulled to disingage the door lifting mechanism. that is there so you can open the door in case of a power outage. I recommend opening the garage manually to reingage the emergancy disingager - if Im right it should click back in place and then start working again - how that helps Read More
Fred - I am assuming that the chain goes around but nothing else moves - I would suspect that the emergency pull cord has been pulled to disingage the door lifting mechanism. that is there so you can open the door in case of a power outage. I recommend opening the garage manually to reingage the emergancy disingager - if Im right it should click back in place and then start working again - how that helps ~ Geoff Read Less
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5 answers

My remote stopped working.

This question is from 1/2 HP Chain Drive Garage Door Opener-DISCONTINUED
Asked by
Bryanne
Gardiner,NY
November 11, 2012
I changed the batteries and it still will not operate. The garage door can be opened and closed by the
wall panel but not the remote. What can I do? Can I replace the remote? If I do how do I set it so that
it will open my garage door?
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Answers (5)

Asked by
Bella Vista, AR, USA
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April 18, 2013
Answer: 
if your door does nothing when you press the remote, and you changed the battery and the battery is in the right direction. you must code the remote to the opener. You may need a ladder to do this...on the back of the opener is a little button i don't know the color of yours, it could be green or purple or red. but you must press this button.. just press 1 time let go then press the button on your Read More
if your door does nothing when you press the remote, and you changed the battery and the battery is in the right direction. you must code the remote to the opener. You may need a ladder to do this...on the back of the opener is a little button i don't know the color of yours, it could be green or purple or red. but you must press this button.. just press 1 time let go then press the button on your remote, the opener will make a click noise. that lets you know your remote is now programed. if this does not work. your remote is in need of replacement . follow the same steps with the new remote. hope this helps...goodluck ...AL Read Less
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Asked by
Jonesville, MI 49250, USA
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February 12, 2013
Answer: 
You can purchase remotes for your operator from chamberlain etc. you can contact the mfg. directly or find the remote online. Most come with instructions to set the dip switches or auto programming for your opener
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Asked by
Columbia, SC, USA
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February 8, 2013
Answer: 
With the new battery in, try reprogramming the remote. If that doesnt work, check the diagnostic LED on the opener when you use the remote and count the flashes. Then refer to the diagnostic chart in your owners manual. You can probably find an owners manual online if you've misplaced yours. If that doesn't work, you probably need a new remote. Get an appropriate one for your model and follw the Read More
With the new battery in, try reprogramming the remote. If that doesnt work, check the diagnostic LED on the opener when you use the remote and count the flashes. Then refer to the diagnostic chart in your owners manual. You can probably find an owners manual online if you've misplaced yours. If that doesn't work, you probably need a new remote. Get an appropriate one for your model and follw the programing instructions in the owners manual.. Read Less
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Asked by
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January 18, 2013
Answer: 
you need to reset the remote - there should be a button on your opener - press that - usually a light will go on or flash - once you press that press and hold your remote button - this will reset your remote and it should start working again .... good luck
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November 12, 2012
Answer: 
Hi Bryanne,
Yes you can purchase a new remote and program it to your opener. The programming instructions will be in the package.
They are available on line or at your local Home Depot Store.
Mike, The Home Depot Answer Man
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5 answers

will this opener work on a 16' X 7' tall door

This question is from 1/2 HP Chain Drive Garage Door Opener-DISCONTINUED
Asked by
door
February 5, 2012
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Asked by
Marlborough, MA, USA
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March 13, 2012
Answer: 
Yes as long as your springs can support the weight of the door.
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Asked by
cape coral
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February 22, 2012
Answer: 
yes it works great I install them every day
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Asked by
OK
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February 7, 2012
Answer: 
I'm sure it would. 1/2 HP is plenty to open that door.
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Asked by
Read all my Q&A
February 7, 2012
Answer: 
No
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Asked by
Tucson AZ
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February 6, 2012
Answer: 
Hi Door! The Chamberlain model CG40D is a great choice and will provide you with many years of reliable operation with your 16’ x 7’ door.
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5 answers

Do the garage door kit also come with the rails

This question is from 1/2 HP Chain Drive Garage Door Opener-DISCONTINUED
Asked by
chay
January 15, 2012
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Asked by
cape coral
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February 22, 2012
Answer: 
yes
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Asked by
Read all my Q&A
February 21, 2012
Answer: 
Yes
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Asked by
Read all my Q&A
February 21, 2012
Answer: 
Yes they do.
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Asked by
Oliver, BC
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February 21, 2012
Answer: 
Rails are included
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Asked by
Tucson AZ
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January 16, 2012
Answer: 
Hi Chay! All the parts needed to install and use your CG40D are included in the package, including the rail. You can download a copy of the owner’s manual for this operator to view the carton inventory on page 6 using the link below.
http://chamberlain.custhelp.com/app/answers/detail/a_id/804/kw/cg40d/session/L3RpbWUvMTMyNjc1ODU2Mi9zaWQvUkF4RlhqT2s%3D
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Customer Reviews

Rated 4.5 out of 5 by 238 reviewers.
Rated 4.0 out of 5.0 by A super online only sale bargain.. I was looking to save a little money on a garage door opener when I found this one on a online only sale. Saving $40.00 was awesome. The company that I bought my 10' X 8' commercial grade garage door from installed my opener for me, but I would of installed it myself if the door would of been there already. And sense this was installed on a steel carport it's a little noisier than I like but hey I saved the bucks I needed and after a while you get use to the sound. The opener does just what you want it to do.A really great value for the money. Oh and free UPS shipping was the added bonus.. March 19, 2013
Rated 5.0 out of 5.0 by SIMPLE TO INSTALL This garage door opener was so easy to install and truley makes me appreciate the security of a smooth quick garage door opener. The light comes on to help you unload the car and unlock the door of your home. It is a great value and I would recommend replacing any opener with issues rather than repairing it. February 19, 2013
Rated 5.0 out of 5.0 by Really good purchase I bought this to replace a broken garage opener. This was super simple to replace. I don't have much technical skills around the house but I was able to install this by myself. As long as you follow the instructions it will work flawlessly. It is not too loud and it opens and closes quickly. I did wish it came with two remotes but if your car has a programmable home link button it will work as well. Very satisfied with this purchase. March 11, 2013
Rated 4.0 out of 5.0 by Great value Couldn't believe everything was included for the price. Would recommend having a second person to help with assembly/installation. Installing in below freezing temps presented a challenge as wires became very brittle. Definitely happy with my purchase. March 18, 2013
Rated 4.0 out of 5.0 by Solid performer Works great. I had a bit of trouble with programing the travel stops. Need to be sure and place the chain properly on the track. I had to use the customer service number and they were really great and knew the product inside and out. March 14, 2013
Rated 5.0 out of 5.0 by just what we needed easy and quick to order online. great instructions for fitting to our older home. great ideas in the instructions for how to make our door itself hold up longer. product was shipped right to the house quickly. it has more than enough horsepower for the job. should last us for years. February 12, 2013
Rated 5.0 out of 5.0 by 1/2 HP CHAIN DRIVE GARAGE DOOR OPENER Great Value for your Money. Easy to put into service and built to last. Best part in and out of the garage and you stay out of the weather. February 5, 2013
Rated 5.0 out of 5.0 by Great product. My brother-in-law and I installed this Chamberlain garage door opener in less than 2 hours. It works great. February 26, 2013
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