Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Rating: 
46 reviews
Code: 84546UC3-EZ
Retail:$88.44
Price:$50.95
Shipping Weight: 23 pounds
Shipping SpecialTrailer hub includes lug nuts, inner bearing (L68149) and race, outer bearing (L44649) and race, E-Z Lube grease cap with plug and grease seal. Fits 3,500-lb axles.
Determining the Bolt Pattern
The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.
On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: 8 on 6-1/2 means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)
To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: 5 on 4-1/2 means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)
Measuring the distance (D) from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.
Video of Trailer Hub and Drum Assembly - 3,500-lb Axles - 5 on 4-1/2 - E-Z Lube
Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Alright, today on This Old Trailer, what we are going to do is install electric brakes. Right now this trailer does not have any brakes on it whatsoever, so it has two drag axles. So the first thing that we need to do is go ahead and take off the rear wheels. And then we will go ahead and take off the hubs. At this point we will take off the dust cap on our axle. And basically what you want to do is on this particular unit we have an E-Z Lube cap, so it fits kind of tight. It is a good idea to go ahead and rotate the hub and lightly strike it and then I will just back it off with a screw driver behind the flange. And then pry it off. Alright, let us wipe off the excess grease on the end of the spindle here and we will get to our tang washer. And we will release it so we can back off the castle nut. Alright, we have it cleaned up a little bit. Now right here, this is the tab I was talking about. That is our tang washer. Take this. Push it down flat to the flat spot on our spindle and then you can take the castle nut off. 1:07
Alright, at this point we can go ahead and just remove the entire hub assembly. Alright, now we can go ahead and clean up the spindle so we can have a nice clean area to work with. And then we will start reassembly. Alright, now that we have everything out of the way we can see what is going on. What is going to happen is our backing plate is going to bolt on to this square flange right here with the four holes. Now, if your axle does not have that, what you need to do is get one of these flanges and have it welded on to your axle. Alright, one thing that we need to prepare is the backing plate. We will go ahead and pull the wires up and out of the way and we will route them through the plastic holder. That will keep them safe and out of the way so that they do not get jambed up between the flange and the backing plate itself. Then we will go ahead and install it on the flange. Two things that we want to remember is that the magnet always points towards the ground and, as you can see, the arm that the magnet is connected to, that bow always faces forward. 2:03
And then on the backside we will go ahead and install lock washers and nuts to put everything into place. Okay, let us go ahead and get our hub ready. I will take a finger full of grease and start off by putting it in the race. And then next we will go ahead and our bearing into the packer. You can do this by hand our use a device like we are using here. Pack the bearing full of grease. And then what will happen next is we will go ahead and the bearing inside there and then we will install the seal. In this instance, we actually have an E-Z Lube spindle. So, when we are done with this, we can actually add more grease. Basically, add as much grease as you can to the inside of the hub. If you do not have an E-Z Lube spindle, then just pack it as normal. Alright, at this point here you can actually use a special tool that distributes the force of installing it. Most people do not have this at home, so we are going to use a regular mallet and just lightly tap it in a circle until we get it even all of the way around. You can tell by the tone that you have it all of the way in there and flat. 3:08
Now we will go ahead and flip it over. And go ahead and do the same thing to the races and bearing. With that settled, we will just put a thin film of grease on the spindle and we will go ahead and reinstall the hub. Next we will go ahead and add the flat washer, then the tang washer and then the nut. When we tighten down the nut, what we want to do is run it up as far as we can with the tool. And back it on and off a few times, make sure the hub if fully seated. And then we will go ahead and tighten up the nut until it stops and then we will use whatever tab lines up with the nearest notch in the castle nut. Whichever tab you use, or notch, what you want to do is you do not want to tighten it to use the next one. You want to back it off to use the nearest one. That way, you do not over tighten the bearings. When they get extra pressure on them, they will get hot and wear out faster. And once we have that resolved, we will go ahead and push up the tab back into place. 4:23
Alright, the next thing that we are going to do is go ahead and adjust the brakes. And how we are going to do that is basically we are going to tighten up the brakes while rotating the hub until they just stop. When you can not rotate the hub by hand anymore, then we will go ahead and back it off ten clicks. And then check to see how much drag we have. The end result is we should have a very slight drag on the brakes on the hub. Now, ten clicks will get you pretty close to where you need to be. You may have to adjust it in or out depending on how much drag you get. Alright, we will go ahead and replace the caps on the back side of the backing plate. Then we will go back over to the other side of the axle and repeat the same process. And our next step would be to go ahead and put on the dust caps back on the end of the hubs. And we will just tap them into place. And there are a variety of different methods that you can do that with. We actually use a 2 inch conduit coupling. That actually works great on these types of dust caps. Okay, we have finished our installation of the backing plates and the hubs. And next time on This Old Trailer we will start next on the wiring components.
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Replacement parts available for this product
Average Customer Rating: 4.8 out of 5 stars (46 Customer Reviews)
by: Edward B.06/03/2011
Is this review helpful?
Everything was good except one of the wheel seals was bent on the edge out of round when i inspected it. 16084
by: James N.03/25/2011
Is this review helpful?
Fast delivery. You should include a tang washer with this product. I liked the races already pressed in, thanks.10396
by: Thurman Jaggers02/02/2011
Is this review helpful?
Very quick shipment. Everything was included. Everything fit perfect.6561
by: Rob T.05/06/2013
Is this review helpful?
Would like set to have included new spindle washer, nut, and retainer. New dust cap would not insert so had to reuse old one. 79119
by: richard n.04/16/2013
Is this review helpful?
great product. 76407
by: William Wilson11/19/2012
Is this review helpful?
Item was as described and shipped in a very timely manner. Communication was great.Willi Thanks 59751
by: Dave C11/19/2012
Is this review helpful?
The 4 brake drum and hub assembly arrive two days after I ordered them. Everything needed was included including new lug nuts. Excellent price and service59701
by: Doug T11/14/2012
Is this review helpful?
Wow........an American made product, just as advertised, with fast delivery, at a very reasonable price. You can't beat that!!! I will buy my trailer parts and accesories here........thanks, Doug59440
by: Dennis10/07/2012
Is this review helpful?
The drum was a perfect fit and again quick shipping. Thank you.56640
by: Jose G09/01/2012
Is this review helpful?
Great quality loved it thank 53739
by: Jim R.08/31/2012
Is this review helpful?
I have an '06 Dively car trailer and bought the 10" electric brake assembly 23-26, 23-27/Hub drum assembly 84546U3-EZ/ and Hopkins 12 volt battery. The parts came quick (as promised), they were packed well, very good quality. Everything bolted on with no problems. Mike from customer service was very helpful. I would highly recommend! FREE SHIPPING TOO! Jim53637
by: Sammy patrick08/09/2012
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got it today and done put it together works great thanks 51162
by: Glenn T.L.07/26/2012
Is this review helpful?
I ordered 4 for a Haulmark trailer. Everything was exactly as ordered49372
by: Mark A.07/25/2012
Is this review helpful?
great price and fast shipping! 49293
by: Jessica F.07/18/2012
Is this review helpful?
This product was exactly as described. It is a very nice assembly with the bearings & races. Fits perfect!48395
by: mark w07/12/2012
Is this review helpful?
everything went together great. great s ervice47725
by: Tom H07/11/2012
Is this review helpful?
I ordered a complete electric brake setup for my 6x12 Haulmark trailer and Timbren springs for my Chevy Silverado 1500. Etrailer is great to work with and at this point I have no reason to buy from anyone else!! The brakes are all Dexter parts which is what I wanted. They were very easy to install on the trailer with a bit of help from the etrailer video. The brakes work great and give me a much better feeling about stopping the trailer in a emergency situation and is much easier on my truck brakes. The Timbren springs springs were easy to install after I realized that the installation is not correct for a 2004 Silverado but could be right for a 2011. The springs work very well as long as I have a fair amount of weight on the truck or pulling a trailer with at least 200lbs of tongue wt. When the truck only has 3 or 400 lbs in it which is normal with a cap and bed slide, it rides quite a bit rougher than without the Timbrens. I think air bags would have been a better decision with varying weight loads 47572
by: John C06/29/2012
Is this review helpful?
Not installed yet, but everything shipped and arrived as expected. Only bought one side, but will probably get the other side from etrailer soon. Looks like the bearings are made in China, but I doubt anyone else in the world is making them any more.46261
by: Bob Thomasson06/28/2012
Is this review helpful?
Drum is OK, but the included bearings are very low quality and I won't use them. The price was cheap and cheap bearings were of course what is included. etrailer.com should offer a more expensive option of real bearings (Timken) like other places do. 45952
by: LEIF B06/13/2012
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GREAT PRODUCTS @GREAT PRICES PROMPT SHIPPING AND EASY INSTALL43997
by: Vince06/12/2012
Is this review helpful?
Very pleased with the product. the fit was perfect. what you get for the money is amazing. the only slight drawback is that the bearings don't have any brand or part numbers on them, which leads me to think they may be of lesser quality. Again, what you get for the money is well worth it!43885
by: Mike R06/08/2012
Is this review helpful?
made in USA drum very good qualty but comes with china bearings43322
by: Chas. S.05/24/2012
Is this review helpful?
Second axle done in as many weeks. If I didn't find etrailer and theses prices, help videos, etc.. I never would have done both axles.The hubs came with everything needed and the bearing races were already seated! Good value, fast shipping. Thanks again etrailer! I can now tow with confidence!41578
by: greg05/22/2012
Is this review helpful?
Good service 41343
by: Chas.05/21/2012
Is this review helpful?
Made in the USA. True bolt on product. Easy install. If you are worried, just watch the video! Great price and fast shipping. Now I can do the other axle. Thanks etrailer.41145
by: Leroy W. Jr.05/06/2012
Is this review helpful?
I am very happy with the products I purchased and the service I've received from etrailer. I jump for joy when I see the "made in america" label on products. At first I was just going to buy wheel bearings but when I saw how reasonable it was to put a set of brakes on my 5 X 8 covered trailer that I use to carry my motorcycle (Harley Bagger) I couldn't resist. Since the initial purchase I have made other purchases from etrailer with the same excellent customer service and product quality. You get what you pay for! Thank you etrailer. PS: I love the instructional videos also.39526
by: Mark C.02/22/2012
Is this review helpful?
Great products at a fair price is what you can expect from etrailer.com. 32212
by: Brian L.02/13/2012
Is this review helpful?
For almost the same cost of having the original Drums resurfaced, I received Brand New - US Made - OEM Parts, with new Bearings, Lug Nuts, Seals, and EZ Lube cover. A No Brainer - Thank you!31717
by: Mark B.02/04/2012
Is this review helpful?
Can't go wrong for the money. Lightning fast shipping,31070
by: ALEX A.01/30/2012
Is this review helpful?
OEM QUALITY AT A GOOD PRICE. QUICK TIME BETWEEN ORDERING AND RECEIVING PRODUCT.30612
by: Nick P01/11/2012
Is this review helpful?
Great price, fast ship. Ordered on Sat. Night and received on Tues. morning. Product is great quality. Only suggestion I would make is that they should include nuts for the backing plates. ( I ordered those as well) Anyone that is ordering these is usually replacing old rusty ones and can't reuse the old nuts. Other than that misunderstanding everything was great. Would definitely order from etrailer.com again. 29515
by: Don F01/06/2012
Is this review helpful?
Was very happy came as it should 29171
by: james G.11/21/2011
Is this review helpful?
Product was as advertised, received promptly, nothing missing, nothing damaged, well packed, same excellent etrailer service.27223
by: Anonymous10/26/2011
Is this review helpful?
Excellent quality and direct fit. Ordering complete backing plates made the install very easy by removing the four bolts on the back of the old plate and installing the new plate. Used a little brake cleaner on the drum and assembled the bearings; and the install was complete. E-Z lube the axle and bearing and done. Couldn't of been a better install and replacement.26128
by: Todd I.10/19/2011
Is this review helpful?
Haven't install yet, but don't foresee any problems. Great service at reasonable prices.25793
by: Fred Wilcox08/25/2011
Is this review helpful?
All of the parts were correct and fit well. Great service!22760
by: Jerry08/04/2011
Is this review helpful?
Just as advertised. Ordered one day, delivered on 3rd day afterward with free shipping on a pair, along with a pair of brake assemblies. All marked "made in USA". I don't think you will beat their price, or quality, anywhere.21082
by: Barry W07/25/2011
Is this review helpful?
The only thing that would have made the hub better would have been for the assembly to come with the spindle washer tang.20243
by: Joseph H07/02/2011
Is this review helpful?
I ordered a hub on a sunday. The order was filled and shipped on that same day and I received it within 5 days. They told me when it would be delivered and it was. I am very pleased with the service as well as the product. I would definitely recommend etrailer to friends and anyone else. Great service, great folks!18413
by: Kevin D06/20/2011
Is this review helpful?
Ordered new brakes with backing plates, drums and some side lights. Great price, name brand products, delivery was fast. Will definitely be buying from etrailer.com again.17286
by: Jerry M.06/09/2011
Is this review helpful?
great site, easy site to navigate. good pricing, excellent instuctional videos16604
by: edward bursiel06/06/2011
Is this review helpful?
came with everything to put on good oem quality fast shipping16234
by: Richard U.05/18/2011
Is this review helpful?
Complete package; reasonable price; excellent delivery time.14719
by: Doug04/30/2011
Is this review helpful?
All arrives well packaged. Easier and cheaper than having drum turned. Finding someplace to do it transporting them and hoping they get it done right.12614
by: Ted H.03/30/2011
Is this review helpful?
Great products!! 10710
by: LT09/13/2011
Is this review helpful?
Great product and races were already installed which saved time!23889
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