UBS Garage Door Motor Drive Gear Compatible with Chamberlain Liftmaster Sears Openers

It's always a terrible feeling when you press the garage door opener button, only to watch the door slowly chug for a moment, then just stop and suddenly there's a strange grinding noise coming from the opener itself. This was my experience the other night at 3 in the morning while taking a dog outside. The next morning I got up and inspected the machine, only to find that the motor drive gear was basically eaten away to nothing. The worm gear was still fine. I figured I would need a new opener, so I went inside and started looking at new openers and how much it would cost to get one installed. I figured I could install it myself, but with it about 20 degrees inside the garage, I wasn't interested in working out there for any more than a few minutes. I ended up finding some videos that showed how to replace the gear. I ended up buying a gear set from Sears's website. I paid the eighteen dollars for "expedited" shipping. It said it would arrive the following day. The following day, when it hadn't even been shipped yet, I called them and was told, basically, that the estimate online is just an estimate and not very accurate. I should receive my gears in 4-5 business days. Well, that wasn't really acceptable, so I looked around and found the one gear I needed here on Amazon. I wish I had looked here first. Less than ten bucks later I had the gear and overnight shipping to my door. Luckily, the set from Sears can be returned, and I'll be doing that. The gear from Amazon, the one for this review, is the exact same thing as what was on there...only without all of it's teeth shredded. I was able to get the old gear out and the new gear in place in about a total of 40 minutes. The hardest part for me was finding a way to remove one of the pins from the drive shaft so that I could pull the gear off. Once I devised a method to do this, it was smooth sailing. The gear installed easily, and works flawlessly. It's quieter now than it was, so I can only assume that the gear has been going bad for a while. A quick note, when you put this in, make sure you adjust the up and down limits on the garage door opener itself. Mine was set WAY too low, and I'm assuming that's what led to the destruction of the old gear. Once I got them set correctly, the thing works like new!! Highly recommended!!

My 9 year old Chamberlain garage door opener stopped working (I could hear the motor running, but the chain was not moving) - took off the cover and found the gear teeth worn off. For $6+ (including shipping), I decided this was worth a try. Placed an order and received the gear promptly a few days later. Installed it, made a few adjustments, and my garage door opener is working again. Saved me the cost of a new garage door opener (around $170 or more, just looking around locally). A few more thoughts: You will also need lithium grease ("white grease") when you install the new gear. This is NOT included with the gear, but you can pick up a tube at your local hardware store for a few bucks if you don't already have some. I debated whether to purchase just this gear, or the "replacement kit" which includes the mating worm gear, lube, and few more parts. Inspection of my opener showed that the mating worm gear was in good shape, so I decided to get this gear only. You may not be as lucky, so if you inspect your unit and find the mating gear worn out as well, go for the kit - still much cheaper than a new opener. Installation: If you are reasonably handy, you will not find this difficult. You can find some good "how to's" on YouTube, so check there to see what is involved. You do NOT need to take the opener down from the garage ceiling to repair it. Here's a brief synopsis: Before you do anything else, UN-PLUG the electrical connection! 1. Remove the cover (use screwdriver or preferably nut driver) 2. Inspect to see what is worn out, and order required parts 3. Remove plastic clip (by hand) from end of shaft holding worn gear; remove small gear (just pull it off) 4. Remove three screws holding gear shaft in place (small wrench or nut driver or both) 5. Remove shaft and gear 6. Remove roll pin holding gear on shaft (use a hammer and a pin driver, or improvise with a small screwdriver or drill bit) 7. Remove worn gear, replace with new gear 8. Reinstall roll pin (hammer and pin driver) 9. Apply grease liberally to new gear (and mating gear) and reinstall 10. Apply grease to small gear removed in step 3-4, and reinstall plastic clip 11. Put the cover back on, plug it back in, adjust if necessary, and you're good to go!