Liftmaster 81C168 Garage Door Screw Drive Carriage Rack

Since about 1995, one of these little carriages has been used with most Lift Master and Chamberlain The same technology is used by other manufacturers as well. Due to the fact that there are two types of carriages, please make sure you use Both pictures appear similar, but if you see them together, there is a stark difference between them. I have nothing to worry about. Anyhow, I encourage you not to hesitate to do this It's not hard to do it yourself, as far as projects go. You can find great videos on YouTube. It cost me $180 to have my garage door serviced at my local company. It will cost at least $100 to do this work. Make sure you give yourself at least an hour to replace the parts. Afterwards, you can review the how-to videos for 30 minutes. If I had to do it over, it would take me no more than 30 minutes. Please take note the screw drive is no longer affixed to the mounts, you might want to consider cleaning it and replaing it with a new one. The lubricating factor. White lithium spray grease (again, $6) are similarly cheaper alternatives. It costs $0. 99/can). It never seemed to me that the garage door was ever too loud for its purpose. In spite of that, it is now much quieter and works very well. *Please note The price is just 99 on Amazon) to replace as preventative maintenance. Despite the fact that I had to replace, it was not necessary. When I ever need to, I will be able to do it in A carriage is easier than a walking stick.

Kylee Irwin

| Nov 16, 2020

There are a few decent YouTube videos that show you how to do it, though. If you wish to look at more than one, I recommend doing so since there are a couple of paths that all deliver the same result. It's much easier to do the job if you have An item rubs against a steel screw composed of plastic. There will be wear and tear on it. What remains is to see how long it takes There will be a difference in how often one cycles the garage door depending on how often it is cycled. It's great! I use it all the time! The spare is the reason for it. As this was my first time applying white grease to the screw, I was really liberal with the amount of grease. While I believe it won't work as well as the factory-recommended grease, it will work fine in my vehicle and hopefully last a long time.

Callie Knox

| Aug 23, 2020

It took me just a few seconds for me to realize that I needed this part when the garage door carriage started slipping. After I ordered it, it arrived at my doorstep a few days later. I assumed the replacement part I took out was an original part to be exact (assuming that the part I took out was an original part). I had to work a little bit to take the old one off and get the new one on, but it was easy and it worked just fine. As for the Craftsman door opener, I'm just glad it still responds to travel adjustment inputs after 15 years!
So My device is still working perfectly after a few weeks, so I cannot comment on it's durability. It is the incorrect tension on the door helpers that is one of the major reasons for the premature failure of the Door Helpers. A poor maintenance program is another major reason for the problem.

Leona DALE

| Jan 09, 2021

Purchasing this carriage rack to replace an old one that had broken just before it went entirely bad. Those who are conversant with very basic mechanical systems can easily replace the pump. Without watching any videos or following instructions, I was able to complete the task in less than half an hour. Quite simply, adjust the components of the operation so that there is no preload on the components (up/down travel, as well as force/preload on the components). Apparently, the teeth on the replacement rack are a little narrower than the original, but this should not have a significant impact on durability. With $12, I will be able to buy a spare to keep on hand. I was shocked that the installation would cost.

Navy Solis

| Jan 08, 2021

I received an exact replica of the garage door opener 'rack' I originally ordered. Chamberlain racks tend to last an average of 8 1/2 years before they need to be replaced. It appears that the new rack is made from the same material as the original i. e. plastic. (I believe that proper "balancing of door" determines how long the rack will last. ) If it holds up as well as the original, that's great. Use Google for instructions on how to replace the components Input "Rack Replacement" into the search for Chamberlain Support, as users have done so before. A rack was needed when it (Rack) moved up and down rail only during the time when it was detached from the trolley/door. Noise is made when the trolley is connected to the rack after the door has been disconnected. The rack, which I received from North Shore Commercial Door, Inc. , changes suppliers as Amazon switches suppliers. In the listing, it was also listed as "Liftmaster 81C168 Garage Door Screw Drive Carriage Rack - Black" as well. It was written by Chamberlin". of "by Chamberlain", I was confident it would be exactly Compared with the original which lasted a long time, the replacement appears to be just as good. In the process of figuring out why it did not last longer, I am trying to identify the cause. To be absolutely sure this isn't the issue, I would replace the screw drive in its entirety I searched everywhere for the part, but it appears to be out of stock. You might be right that the operation of my door is not as The original order for me was 3 racks (I have two doors) and I have now been using one of them, which seems to work well It's too early to tell how long it will last. I have recently replaced all the rollers to help smooth out the door's operation since I replaced them just last month (March). In any case, replacement of the two 3" cable pulleys on the top of the door is required. Having the door opening at the opening really helps with a smooth In my opinion, the original drive racks and the replacement drive racks both wore out because of the door not having rollers and especially one of the 3 inch pulleys. Despite that, I'm pleased to report that the replacement racks I purchased appear in every way to be of the same quality as the old.

Royal TURNBULL

| Jul 18, 2021