1. Trailer Bearings Races Seals Caps
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  4. E-Z Lube Grease Cap
  5. 1.98 Inch O.D.
Grease Cap, 1.99" OD EZ Lube Drive in with Plug - Qty 2

Grease Cap, 1.99" OD EZ Lube Drive in with Plug - Qty 2

Item # RG04-040
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Trailer Bearings Races Seals Caps
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RG04-040 - 1.98 Inch TruRyde Trailer Bearings Races Seals Caps
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Grease cap fits EZ lube trailer hubs with 2" inner diameter. Includes rubber lube plug for EZ Lube axles. Lowest Prices for the best trailer bearings races seals caps from TruRyde. Grease Cap, 1.99" OD EZ Lube Drive in with Plug - Qty 2 part number RG04-040 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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TruRyde Trailer Bearings Races Seals Caps - RG04-040

  • Caps
  • E-Z Lube Grease Cap
  • 1.98 Inch O.D.
  • TruRyde

Grease cap fits EZ lube trailer hubs with 2" inner diameter. Includes rubber lube plug for EZ Lube axles.


Features:

  • Grease cap with rubber lube plug for trailer hubs
  • Drive-in installation


Specs:

  • Outer diameter: 1.99"
  • Quantity: 2


Dimensions


DC-200L Grease Cap, 1.99" OD EZ Lube Drive-In - Qty 2

DC-RP Rubber Plug for EZ Lube Grease Cap - Qty 2





Video of Grease Cap, 1.99" OD EZ Lube Drive in with Plug - Qty 2

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Trailer Bearings Races Seals and Caps Rebuild

Speaker 1: Today we're going to take you through the rebuild process on a couple of hubs. We've got an idler hub, and here we've got a hub and drum assembly. Works with electric rigs, but this can also work for just standard discs, if you've got a disc brake style setup.Basically what we're going to show you is how to get all of the bearings out. How to remove the seal. How to remove the race's if they're damaged, then get them replaced in the proper manner. We'll show you how to use an easy loop hub, which we have here.The first thing we are going to need to do is, get the grease cap off the end.

It can have either a rubber plug in it like this one does, or it can be a solid metal cap.These are pressed fit in there, basically by tapping on them on the back side. To remove them, a deadbolt hammer is typically what we're going to use. We're just going to start tapping as we go around. You'll see a little separation start right here, and slowly it'll work it's way off.Now the next step's going to vary a little bit depending on your axle setup. Do you see this is going to have a keeper that goes around the nut.

And that prevents that from being backed off, or removed. A lot of times you'll have a castle nut, which will have just little tabs that stick off, and there will be a cotter pin that passes through it. Just depending on your application, you need to get the keeper for the nut off. This style we just kind of pry out. A cotter pin you would just remove of course.Once we have that off ...

We'll start to take off the nut here, and the washer that's in behind it. Now yours should look a whole lot more dirty than this. There should be a lot of grease packed in, and through the hub, this one's brand new. We thought it'd be nice to show you the components before the grease was on .. Of our washer that comes off.And then here we're going to have our outer bearing.

Continue to pull that. We're gonig to have our inner bearing here. That sits in the backside of the hub. And we didn't put it in yet, we will show you how to put it in. But a seal would typically be covering the backside here. We'll show you how to use a seal removal tool, or another tool. To get that pried up and out. To get an access to that inner bearing.Now for a drum style like this, that process for disassembly is going to be just the same. One thing to keep in mind if you're using a disc brake setup. You'll have to remove the caliper before the disc is going to come off.Now once we have the spindle exposed, as we said this is going to be really greasy. We want to get all the grease removed, and the first thing we'll do is inspect it. We want to make sure that it looks just like what we have here. Everything's nice and smooth. We don't see any kind of discoloration, or any marring on the metal. Indicating that our bearing's got hot.If you do have any of those symptoms, at this point it's time to replace those bearings. You don't want to repack them. Get new bearings, and put in there. You might have a bearing that's come apart in here. Another surface to ensure is in good condition, is where your seal is going to go. That helps seal all the grease inside of our hub. With a damaged or broken seal, that grease is going to seep out. Either out of the hub, or in this case into our brake assembly.Now if your axle has brakes, we're also going to check the disc. Make sure it doesn't have any issues, or your hub. And this is going to be a hub and drum assembly. The brakes are going to ride on this machine surface. You're going to check that for signs of excessive heat, discoloration, or cracking. And this is our magnet surface. We'll check that surface for the same issues.Now inside the hub regardless if it's a disc brake, it's a drum brake like this. Or just a standard idler style hub. You're going to have an outer race. Would be right here, it's a small tapered piece of metal your bearing sits in, and rotates on. That's basically the outer portion of the bearing.You have the same thing here on the backside. This is called the inner race. Now if those show any signs of wear, overheating, or cracking. Those are also something we'll need to replace, which we'll show you how to do in just a minute.Now, with your brake assembly exposed, if you do have electric brakes like we have here. It's a good idea to check all the components for wear, cracking, maybe missing pieces. Check your pad thickness to make sure those are in good shape. Basically if you have a non working brake assembly and you put everything back together, you're just going to have to take it apart and do it all over again to get back to the brake assembly. This gives you a really good option to be able to change them out.And most applications are going to use a four, or maybe a five bolt flange to hold them in place. And you'll just remove the lock nuts, or sometimes you'll have a hex nut with a lock washer. You want to remove those, and then simply slide your assembly off after you cut the wiring.The friction material itself should also be checked for any kinds of cracking, or overheating. If you have any grease inside the system at all, it's likely it's gotten on those pads. It's a good idea to get those changed. Now as far as the removal of the races go, it's going to be just the same whether we're using an idler style hub like we have here. A drum brake like we have here. You can basically see where the idler is, here in the middle of the hub. It's going to go all the way around there, and we just have this extra material here to provide our braking surface.Now if you're doing a disc brake style job again, it's going to be just the same here with the races living inside of the actual hub portion. You'll just have the discs there for the brakes to make contact. We're going to use this little bit smaller one, it's a little bit easier to manage to show you how to get these out. We've talked about where the races are. The outer here, the inner being closer to the inside, but on the backside of the race there's a little lip. That lip's meant to stick out just a little bit further than the hub, and provide us an area to put our tool on, and help to drive that out.If you look all the way through there on that inner race, you'll see that little lip that sticks out just from the hub slightly, and it gives us enough area to use our tool on. Now generally to remove these you're going to use a punch, similar to this. Some guys will use a screwdriver. Or a piece of pipe. If you have a piece of pipe that's small enough to fit inside of that diameter, you can take that down through and allow it to rest on that lip.Use our punch, and then just need a hammer. And we'll start working that out. We're going to tap all the way around. Kind of equally, and evenly apply the force to get it to come on out of the bottom for us.You can see now as it starts to come out there's going to be a little gap created between the hub and the race. And we can just keep going, bringing it on out. Then you can inspect the inside of the hub surface there. Make sure no damage or anything has occurred, and repeat that same process for the outer race if you plan on removing and replacing that one.Now in the outer flat edge, you can see we're going to have our tapered edge on this side. If we roll our race over to the flat side, typically there's going to be a manufacturers part number on there. That will help you identify which race it is, that you need to go back in your system. If those are rubbed off, worn off, if you can't read them. You can measure the outside, to outside diameter of the race here. It's a good idea to use a micrometer to get it exact.Now here's your basic micrometer. And again, the outside of the race is what we're going to need to measure. You want to go . I set the thickest point there. Looks like this one's going to be about 1.98. That's going to be the measurement you'll want to supply.Now while we've got this out, let's also look at the proper way to measure our bearing. Instead of the outside for the bearing, we need to measure the inside diameter. That's going to be pretty simple. Let's pull that out, find the largest measurement we can. Which here, looks like it's going to be 1.03. With that information, we'll be able to get the correct bearing, and the correct race, so they'll fit together properly and make a full bearing kit for us.Now here's the race, we're going to show you how to get this put back in. Basically just going to press fit inside of our hubs. We need to get it down on there. Kind of like that. And you'll have a couple options. A lot of times you're going to see do it yourself or at homer, just going to use a wooden block. Just place it on there. That's going to get you started, but at that point you'll struggle in getting it to go all the way down into it's seat.Now to take care of that problem, there are several seal drivers that are available. Seal and race drivers that are available out there on the market. It's designed to fit down inside of our race, inside of our hub and get it down there where it needs to go. This is part number ptw83020, has several different sizes, even if you have multiple trailers it's going to do the job.Now the side with the angle on it, is designed to fit down inside of our race. If we use the other side, that's going to be for driving your seal into place. Just want to hold it, and take it on in with your hammer. You'll see, you just want to insure that our race is all the way up against that line on the hub where it's supposed to mate to.Now when it comes time to pack your bearings you're going to have several different ways of doing this. You can just use your hand, is the traditional method. That's going to be the method probably reserved for the very occasional trailer work kind of situation. If you do it once or twice a year, probably get away with it that way.Next you would go to a, kind of a sandwich funnel style almost. If you look inside of there, you can see the bearing. It's located between the two pieces. Just use a grease gun. Start filling that with grease, and that's going to fill our bearing for us. And the third, with this one you're just going to place your bearing down and in. It should be pretty close to center. And then we've got our cone her that's going to go down and secure that.Now I think this style, wastes a little bit more grease than what this style will. This has a dust cap. You can see, you can keep your grease in there, put your dust cap on there and save it for later use. This will be if your going to do it every couple years. And this particular style would be if you're a more regular user.Let's start by showing you how to use a bearing packer. Similar to this. Again, we've just got our grease inaudible 00:11:07 here on the top. And then just slowly start to fill it. Now I like this style quite a bit. I think even regular users might enjoy it, because you can get a really quick visual look at that bearing. You're not going to have to overdo it, or have to much grease.You can kind of see in there now, we're starting to get grease to come out of it. Couple more pumps, we'll be good. You can see we've got grease coming out all the way around. Where all of our bearings are. Got a little bit of excess there. Just take that around the outside of it. And then we should be able to lift it off. And now you can see what we we're talking about. Just a little bit of excess there, that you're just going to wind up wasting.Now we'll take our bearing, we're going to place it right down in our race. And then we'll cap off the back with our seal. Right now our seal's going to fit in just like our race did. It's going to have a little bit of a pressure fit to it. Now very often in this situation, I see people using the four by four method. Kind of here, just placing that on and tapping it. As an option though, if you do have one of these. You can see that's designed to fit right on the top of the seal. And help drive it in.The biggest thing here is, just going to be getting it driven in squarely. You can see, this side's in a little bit further than this side. I'm going to start this side first. Now since we didn't have the opportunity to show you before, we're going to take a look at pulling a seal. Now this is a seal puller, we carry this on our website part number ptw1219. This is meant to hook underneath the seal. And then you kind of pull up on it, and just like our race you'll have to work all the way around that edge. Just bringing it out a little at a time.If you don't have that available. Another option would be a screwdriver. You just kind of get that under the seal, and turn it. And see, that'll allow you to also pop that out. We've taken care of our race. Our inner bearing. Our seal. The last component, before we put our hub back in place is going to be our outer bearing. Now with this bearing, I'll show you the hand packing method.This is definitely . Slightly dirtier method than the bearing packer. When we get grease on our hand we want to look at the larger side of the bearing. This is the smaller side. We have a larger side In between the inside and outside there's a gap. We can see our rollers in there. We want to grab that, and use that gap and shove grease inside of it. Now this is going to take a little bit, you want to work in the same spot until you get the grease pushed all the way through. We can see on the top there we've got a little bit starting to come through.And once we push it in the bottom, and you see it start coming out the of the top in those little drips, it's going to indicate that, that section's fully packed. Just need to work all the way around their outside edge now and do the same thing. Alright, once that's all the way around . The bearing will be ready for use.Now one more thing I like to do. We can see our inner bearing there, and our outer bearing. Well between the two, got a pretty big gap in there. If you'll take a . Pretty good amount of grease. We're just going to go all the way around. See how we can go all the way around the inside and just line that really well. The more grease we have in here, the less chance we have of any moisture getting in there, which can cause corrosion, rust, pitting. Pretty much things we do not like when it comes to bearings, races, and hubs.Put plenty of grease in there. And then this one does have the easy lube spindle, that'll even fill it in more. Now we can get our assembly slid on. I like to keep my thumbs on that outer bearing, just to prevent it from . inaudible 00:15:28 pushed off there. Now we can put on the original hardware that we removed, in taking off our hub the first time. In our case, we had our washer and our nut.Now most commonly you'll see pliers similar to this being used. We basically want to get that tightened down. Once it's fully tightened down you'll feel some resistance in the hub. We back it off just slightly. That'll give us a little bit more freedom of motion there. Something you don't want however . Is any movement in, or out on your hub. You want to be sure that everything is compressed, and you don't have what's called end play. Which would be the play in and out.Once we've got that set, then you'll put on whatever tight keeper yours came with. Get that put back in place. Now with an easy lube style hub, you're going to place your grease gun on the end, and then you can just fill the remainder of that hub up.Now for your typical applications, you're either going to have a solid cap, or a cap that'll have a rubber plug in it. A solid cap's going to be for an axle without the grease inaudible 00:16:51 here on the end. Goes on there. Just knock it on with your rubber mallet. Same with the one with the plug. Just gives you a removable area there, be able to cap that off.We'll show you how to put that on. Now as alternatives as well, a lot of times on boat trailers and marine kind of situations. You'll see a bearing buddy. This is going to apply a little bit of pressure on the grease, you'll fill it up. This kind of comes out just a little bit. That applies constant pressure on the grease to make sure we don't have any air, or anything like that. Then there is also an oil bath hub available. Now this is going to be for use with seals that are going to be designed specifically for oil bath use. You'll have to change that seal.We're using a double lip seal. There are also single lip seals available. Of course a double lip seal is going to give you just a little additional security. Keep that in mind when you order. But let's get this knocked on there now so you can see how that works. We just want to take the cap, we're going to center it. This is going to be very similar to what we did with the seal. And then just gently start tapping it around the outside. And it'll seep down on there for you.It's really going to be the same thing that you'll do with any of the end caps. Now with this side done, it's a good idea to take care of all the other hubs. Get them all on the same maintenance schedule. And as long as you'll periodically check the grease, take your trailer out for a trip occasionally. Just to keep everything lubricated. It should extend the life of these parts, and give us years of good service.


Customer Reviews

Grease Cap, 1.99" OD EZ Lube Drive in with Plug - Qty 2 - RG04-040

Average Customer Rating:  4.8 out of 5 stars   (547 Customer Reviews)

Grease cap fits EZ lube trailer hubs with 2" inner diameter. Includes rubber lube plug for EZ Lube axles.

- RG04-040
by:

Very good experience and nice selection. Spent the winter restoring boat trailer. etrailer had spring eye bushings, shackle bolts, u-bolts and hub seals. Then topped it off with new LED lights. couldn’t be happier. Even had to exchange some lights because I ordered wrong size, no problem.



- RG04-040
by:

This was an exact fit for my camper. I bent the mouth part of it slightly inward. Installed easily from there.



- RG04-040
by:

A perfect replacement for the battered and worn caps on my EZ Lube axles. Order dust cap driver p/n 290-991 for easy installation and removal during service.


Comments
Thanks for taking the time to follow up with me. Ive only put a few hundred miles of use on the trailer but everything is working great. Ive actually recommended etrailer to my father, a friend of mine and anyone at work who would listen made easier by the fact that I had everything I ordered shipped to my job instead of home. Barring an emergency situation that requires an immediate solution you have my business in the future.
WT H - 02/20/2015



- RG04-040
by:

Really phoning it in with this one. Thin. Does not fit Dexter hubs very well (after 200 miles, I lost two, a third was starting to go with only one remaining firmly in place). My advice is invest in the Dexter brand caps if you have Dexter axles. I'll keep these in a box for emergency replacements only.



- RG04-040
by:

The bearing caps were high quality and the fit was perfect. So much better than trying to clean and/or repair the old ones. Great value for the price and piece of mind knowing you have one less thing to mess with.



- RG04-040
by:

I use these caps on my boat trailer which is used only in salt water. Even with thorough rinsing after every use, the zinc plating on cap rusts out and the rubber plug cap gets dry rotted from sun exposure in less than a year. Still works OK if you smear a coat of grease all over the outside of the cap and the rubber plug.



- RG04-040
by:

Grease Cap fit perfect and the rubber plug fits nice and tight. No water or dirt is getting inside. I highly recommend you purchase the Dust Cap Driver Tool as I did. They fit tight and the tool puts equal pressure all the way around. Your going to flatten the edge out if you don't use this tool for sure. Do it right the first time.



- RG04-040
by:

I was more than satisfied with my first experience with etrailer. The product was reasonably priced and when received was of excellent quality. The shipping of my product was received well within the expected time. The part was just what I needed for my Harley Trailer! I will certainly recommend etrailer to anyone needing their products and will also order from them the next time I need any products they carry!



- RG04-040
by:

I installed them on my boat trailer and my utility trailer. They appear to be high quality and they fit perfectly.



- RG04-040
by:

The grease cups appear to be high quality parts. These grease cups are exactly what I needed to finish my project. I believe installation will be straight forward and will give me an opening to grease the zerk on the spindle end. These parts were not available at [hardware store] or my local auto parts store. etrailer once again had the part I needed, thanks etrailer!



- RG04-040
by:

The Grease caps are perfect. I installed the one which was missing in just a couple of minutes and now have a spare in case another cap falls off.



- RG04-040
by:

Went to etrailer, looked them up, ordered. Got them fast. Just what I wanted. Great Customer service. My “go to” place for trailer parts and accessories.



- RG04-040
by:

Snug fit, as some have commented. I concur that this is better than a part that loosens, falls off in service, and is lost. Will definitely buy this item here when I need it again. Well done!



- RG04-040
by:

These caps are great. I did have to file down the outside edge just a bit in order to get them on, but that is likely due to the hubs being 30 years old. Also I'd rather have them be a bit too tight so they stay on, rather than loose so they fall off. I also got the cap removal tool which really makes installation and removal much easier, and limits damage caused by having to pry them off and pound them on.


Comments
They are still working great a year later. They have stAyed on, snd the removal tool is invaluable for servicing trailer bearings
Kevin - 07/04/2020


- RG04-040
by:

It was time to repack the bearings on my 12 foot utility trailer and I needed a dust cap with simple / clean access to the grease fittings. The RG04-040 was the perfect solution, easy to install and looks great too!



- RG04-040
by:

Fit perfectly as a replacement for the original ones.



- RG04-040
by:

Easy to install and have performed as required. Best part is they were affordable to replace the original set that came with my stock trailer.


Comments
Excellent
Carla R - 06/08/2020


- RG04-040
by:

I'm a "Return" customer & have been completely happy with the products & service provided by etrailer. They have met & exceeding my expectations! When I have trailer needs they are my go to resource moving forwards! Keeping my trailer in Great Shape!



- RG04-040
by:

Great replacement



- RG04-040
by:

Once again I made a purchase without knowing exactly what I needed and customer service gave me advice,which I took, and it fits perfectly. Thanks


Comments
Still working just fine. I bought some extras and theyre still in the bag.
Dave U - 05/15/2014


- RG04-040
by:

This is the first product bought from etrailer.com that has given me an issue. Since there are so many sizes and variations of these covers I was very careful to choose the ones listed for my specific model of Jayco trailer. Unfortunately, they could not be installed out of the box. I'm an experienced mechanical engineer and pretty good with tools so I feel confident saying these were slightly too large. My solution was to use a tin snips and make a cut on each side to allow for a slight compression during insertion. With that modification the covers installed easily, but with plenty of friction to stay in place.


Comments
The caps are meant to fit a 1.98 inch hub bore. They are slightly over sized so that they will compress slightly in order for a tight fit.
-- Etrailer Expert Mike L - 05/15/2019


- RG04-040
by:

Good service and good product. Appreciate your “how to” videos also. Great customer service. Thank you!



- RG04-040
by:

Was what we ordered & needed.



- RG04-040
by:

Perfect fit, great price and superb ava ilability.



- RG04-040
by:

I needed replacements as I lost one dustcap and plug the last time I towed the trailer for 200 miles. Hopefully replacing the dustcaps will fix that issue. Price was fine, delivery took a while, but that was a postal issue. The order was processed quickly and I could track the parcel.


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Ask the Experts about this TruRyde Trailer Bearings Races Seals Caps

  • How to Determine Correct E-Z Lube Grease Cap
    To determine the correct E-Z Lube grease cap you are going to need to measure the center of the hub where the grease cap is going to fit (please see accompanying photo). The measurement will need to be very precise so you are going to want to use digital calipers such as # 301-17068. You will then just compare that to the available caps. Grease Cap # RG04-040 will fit a hub bore of 1.99 inches. Grease Cap # RG04-080 will fit a hub bore of 2.44 inches. Grease Cap # RG04-120...
    view full answer...
    Image 1 for
  • Dust Caps with Rubber Plugs for 1.99" Hub and 2.72" Hub
    For the 10" use the Grease Cap, 1.99" OD EZ Lube Drive in with Plug - Qty 2 part # RG04-040 for the 12" use the Dust Cap for Kodiak Disc Brake Kit 2.72 O.D. part # K7CAP. Both of these will included the black rubber plugs as well.
    view full answer...
  • Are There Any EZ Lube Dust Caps Made Of Stainless Steel?
    I don't know of any EZ lube dust caps that are stainless steel. All of ours like the # RG04-040 are zinc plated for corrosion resistance.
    view full answer...
  • EZ Lube Grease Cap Hitting Grease Fitting
    I do have a solution that will work with your EZ Lube axles. It sounds like the grease fitting is too long and is hitting the rubber cap. Most grease caps are very similar in height, so changing the cap most likely won't solve the clearance issue. However changing out the grease zerk will give you more clearance, if you use a short one like # Gzerk. If the fitting was bent, or damaged and then replaced, it's very possible to have one that is just slightly too long. I verified with...
    view full answer...
  • Grease Caps for Seadoo Boat Trailer with Hub Bore of 2.55-Inches
    We can help you with new dust caps/grease caps for your Seadoo trailer. The page I linked for you displays the items nearest to your hub bore size 2.55-inches. For a basic grease cap use # F001515.
    view full answer...
  • EZ Lube Grease Cap Larger Than 2 Inches
    There is not a cap with a 2.125 inch outer diameter; the next size up from the 1.98 inch outer diameter # RG04-040 is 2.44 inches, the Grease Cap, 2.44" OD Drive-In With Plug - Qty 2 # RG04-080. I have added a link to a video review as well as a link to our entire selection of caps, which you can filter by size.
    view full answer...
  • Trailer Grease Caps with Zerk Grease Fitting
    Grease Cap set # RG04-040 are regular grease caps that have a rubber plug on the end to access a grease zerk fitting on the spindle (end of the axle). They install the same as regular grease caps. It sounds like you are looking for bearing protectors such as # BB1980A which are for regular spindles. I have linked a video review for you.
    view full answer...
  • What Size Grease Cap Will Fit 1.95-inch Hub and EZ-Lube Spindles
    You identified the correct grease cap, part # RG04-040. This is sold as a set of two caps. If you ever need replacement rubber plugs we also offer these as a set of two, part # RG04-010. Since your trailer uses EZ-Lube zerk fittings on the spindles you will be better off with a grease cap that has a removable plug. This will enable you to get quick access to the grease fitting without having to take off the grease caps. If you want to simplify installation of the grease caps you might...
    view full answer...
  • What Size EZ Lube Hub for a 2990 LB Axle on 2008 6 x 10 Carry-On Trailer?
    In order to add EZ Lube hubs to your trailer you must already have EZ Lube spindles. If your axles do not have EZ Lube spindles these will first have to be welded on by a qualified service technician (welding spindles is not a task that we recommend for the do-it-yourselfer as alignment of the spindle on the axle is critically important). In some cases it may be more cost-effective to replace the entire axle assembly with one that uses EZ-Lube spindles. Another alternative is to add...
    view full answer...
  • Grease Cap Recommendation to Replace AL KO Part Number 363277
    I did some digging and based on the part number you referenced you need grease caps that have an outer diameter of 1.986 inches. Because of that you would want the part # RG04-040.
    view full answer...
  • Replacement Grease Cap to Fit 16 Foot Scamp Deluxe 1998
    The grease cap # RG04-040 that you linked has an outer diameter of 1.99 inches and is for E-Z Lube Axles. You'll need to measure the inner diameter of your trailer hub's bore to find which is the exact replacement you need. This needs to be as exact as possible so the best way to measure is with a digital caliper like # PTW80157. If you find your hub bore to have a 2 inch inner diameter, then the # RG04-040 grease cap will fit well for you. If you find the hub bore to have a different...
    view full answer...
    Image 1 for
  • How to Pick Out Replacement Grease Caps for EZ Lube Spindle Grease Cap
    You will want to use a dial caliper or micrometer to measure the inner diameter of the hub you have on your trailer to determine what size cap would be needed. Check out the picture I attached that shows this measurement being taken on a hub. I attached a link to all the grease caps we offer, once you know what size you need check out the link I attached to see all the sizes we offer that have the EZ lube style cap that allows for easy application of grease to EZ lube spindles.
    view full answer...
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  • Will 1.986 Inch OD EZ Lube Dust Caps Work To Replace 1.98 OD Dust Caps
    The EZ Lube Drive in Grease Cap with Plug # RG04-040 will work as replacements for your existing grease caps that have a 1.98 inch outer diameter.
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  • How to Choose a Grease Cap for a Trailer that Does Not Have Grease Caps
    To ensure that your spindle is not sticking out of your hub farther than it should, I would recommend verifying that all of your bearings and seals are seated correctly and the hub is tightened down correctly. When tightening the hub to the spindle, the spindle nut should be tightened until it is snug and then backed off slightly until the tang washer or cotter pin will fit through the spindle nut. I have attached a photo showing where the bearings and seal should sit on a spindle for...
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  • Looking for Grease Cap with Zerk Fitting with an Outer Diameter of 2.02 inches
    It sounds like you are looking for a bearing protector style of grease cap. We have a variety of bearing protectors in several different sizes but none with an outer diameter of 2.02 inches. The bearing protectors closest to your OD measurement of 2.02 inches is either going to be 1.98 inches or 2.047 inches. Bearing Buddy grease caps are made both with and without threads so you'll want to check your hub bore to see if it is threaded or not and while you're at it, confirm the number...
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  • Trailer Hub Grease Cap for Hub with 1.980 inch Opening
    You would want the EZ Lube Drive in Plug with Cap part # RG04-040. This has been confirmed as a fit for trailer hubs that have a hub bore of 1.980 inch.
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  • Does 6 Thousandths of an Inch Difference Matter when Replacing Dust Caps on a Trailer
    When it comes to hubs 6 thousandths of an inch can make a difference between a fit and not a fit. But for grease caps it is not going to matter much. The fit needs to be tight so they do not fall out. So you can use # RG04-040 that you have referenced.
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  • Bearing Kit and Dust/Grease Caps for Coleman Mesa Camper with L68149 and L44649 Hub Bearings
    As far as bearing kits go # BK2-100 is the only one that has both the L44649 and L68149 bearings. The seal that is included is a 10-19 with an inner diameter of 1.719 inches and outer diameter of 2.565 inches. Based on my research this is the correct seal. Your hubs should have a center hole for the grease cap that is a little under 1.99 inches. Use calipers such as # PTW80157 to measure the hub bore to be certain. For a set for EZ Lube axles use # RG04-040. For a set of regular caps...
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  • Solution for Trailer Axle without Grease Fittings for Easy Install of Grease
    There isn't a way to install zerk fittings on your spindle to make it an EZ lube spindle, but we do have Bearing Buddies which are designed for spindles like yours that do not have the zerk fittings to make installing grease in them easier. You have to pick them out based on the diameter of the grease cap they'd replace. So if you had the grease cap part # RG04-040 that you referenced you'd need the Bearing Buddy part # BB1980A-SS would be the kit to use. These have a grease fitting on...
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  • How to Determine Correct Replacement Dust Caps for 2012 Karavan SeaDoo Move Trailer
    I will be happy to help you out. There are a couple of ways you can determine which dust caps fit your Karavan-made trailer. First, you can measure the opening on the hub where the dust caps fit. The measurement has to be as accurate as possible so you will need to use dial or digital calipers. The other way is to retrieve the outer bearing number at least, if not both the inner and outer bearing numbers. The bearing numbers are stamped into the sides of the bearings. The outer one you...
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  • Does The Bearing Buddy Protect the Bearing from Water
    When the hubs get hot, and then backed into water for unloading, they have a tendency to suck water into the hub. Normal dust caps will not offer much protection. If you are looking for a bearing cap replacement that keeps out water and dirt, then the Bearing Buddy would be what you need to consider. The Bearing Buddy, like part # BB1980A-SS that fits a 1.980 hub bore, also includes the rubber protectors. You would have to either have the outer bearing number, or take an exact measurement...
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  • How to Pick Out Replacement Grease Cap for Trailer Hub
    That is a pretty bizarre interaction to have with the roadside tech. You will have to measure your hub bore to pick out the correct cap though. You will want to use a dial caliper or micrometer like part # PTW80157 to measure the inner diameter of the hub you have on your trailer to determine what size cap would be needed. I attached a link to all the grease caps we offer, once you know what size you need check out the link I attached to see all the sizes we offer.
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  • How to Pick Out Grease Cap for 2005 Fleetwood-Pioneer RV Trailer Axle
    What you are looking for is a dust cover for an EZ-Lube spindle hub. We definitely can help but we need to know the diameter of the cap so that we can pick out the correct one. You'll need to remove the one you have and measure the outside diameter of the cap where it fits into the hub and we'll be able to pick you out what you need. If you have a 1.99 inch diameter you'd want the part # RG04-040, if you have a 2.45 inch diameter you'd need part # DC250L-DCRP, or if you have 2.72 inch...
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  • Are the EZ Lube Grease Caps Waterproof
    The rubber grommet for the Grease Caps # RG04-040 will create a seal that helps keep water and other contaminants out of your hubs, but no grease cap is really "waterproof". The EZ lube caps are going to do just as good of a job as normal grease caps though if that is what you are wondering. The best way to keep water out of your hubs is to make sure that they have the proper amount of grease in them in addition to a grease cap.
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  • Can EZ Lube Spindles Over Fill Trailer Hub And Cause Issues
    You are exactly correct, it is very easy to overfill trailer hubs with grease using EZ lube spindles but they still can be helpful if used carefully. The issue though is that not all spindles have the zerk fitting to allow you to pump grease in them which is why caps like the # RG04-040 aren't on all hubs. I still recommend people pack their bearings by hand as that ensures you get all of the old grease out, new grease in, and you won't have to worry as much about blowing grease seals...
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  • Bearing Buddies for a Utility Trailer with 1.810 Hub Bore
    The closest Bearing Buddies that we have to the 1.83 measurement you have given are 1.81 protectors # BB1810. Depending on how you measured (using digital dial calipers is the most accurate) and because of subtle differences, these may actually be the correct ones. To be sure, I would need to know the inner and outer bearings numbers stamped into the metal of the bearings. You want to make sure you get the correct fit because if they are too small then you will just end up losing them...
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  • Bearing Protectors for a Trailer with a 1.950 Inch Hub Bore
    The closest fit of any bearing protector we have to a 1.950 hub bore is going to be either # BB1968SS for stainless steel or # BB1968 for chrome plated. These are designed to fit a hub bore of 1.968 inches. Bearing protectors are often slightly larger than the hub bore for a tight fit. But 0.018 inches still might be too large to fit. Make sure that when you measure you are using dial or digital calipers for the most accurate measurement. It also might help if you can tell me the...
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  • Missing Zerk Fitting on Boat Trailer Grease Repack
    Thanks for the pictures. It looks like your zerk fitting has broken off. You should have a standard 1/4" grease zerk fitting if you have EZ Lube spindles. You would be able to replace it with the Grease Zerk for Ram Jacks item # Gzerk.
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  • Replacement EZ Lube Dust Covers on Trailer Axles
    The dusts caps that fit the EZ Lube axles fit different size holes of the brake drum or hub. For example, # RG04-040 will fit EZ Lube axles with a 2 inch inner diameter. I have linked a page that will show all the EZ lube dust caps and the different cap sizes. You will have to have your tech measure the trailer hub to figure out which cap you will need.
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