How Do I Know Which Hub Assembly to Use on My Trailer?

Question

Question:

What is the best way to determine what size hub replacement is needed if manufacturer of the trailer is unknown? I can send pictures if that would be helpful. Thanks!

asked by: Richard M

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Expert Reply:

The best way to determine which hub replacement you'll need for your trailer is with the trailer capacity and, most importantly, determining which bearings are used in the hub. You'll need to pull the hubs off and remove the bearings to find the bearing and seal numbers that are stamped on the backs of them in order to match them up with a new hub. If you can't find the numbers stamped on the backs of the bearings and seals, you can use a micrometer to measure the inner and outer dimensions of them. The other thing you'll need to know when choosing a replacement hub is the bolt pattern on your current hub, so that you don't have to also replace the wheels.

I've linked two of our help articles on trailer bearings that you can check out; they'll tell you more about the installation and what bearings are most popular on which axles. I've also linked an article on how to measure for your bolt pattern.

For reference, the Dexter Trailer Idler Hub Assembly # 8-258-5UC1 you were looking at uses the same # L44649 inner and outer bearing, # L44610 races and # 10-9 grease seal.

If you can tell me which bearings, races and seals, as well as the capacity of your axle I can help you determine which hub is going to work best for you as a replacement. Your axle should have a plate or sticker in the middle of it that has the serial number and capacity on it. If you can't find that information you can also measure the spindles; check the attached photo which shows you what to measure.

expert reply by: Erik B

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Answer 1

We do not carry a tool that will help install your races, though I can pass on some information for you that might be helpful. To install your races, this is what you&#39;ll want to do, according to our help article on replacing bearings,…

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Answer 2

From the numbers you provided it sounds like you need replacement grease seals. In my research, the grease seals I found with the GS-1719DL number have a 1.72 inside diameter and 2.565 outside diameter. The replacement double lip grease seals you…

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Answer 3

If your current springs have 5 leaves then going to a 7 leaf spring will increase the height of the trailer a little and make the trailer more susceptible to sway. Regarding capacity if you go with springs rated higher than what is required it will…

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Answer 4

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

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Answer 5

For your enclosed trailer application I have several suggestions for adding interior lighting that you can control directly via a switch. Since your current 4-pole trailer wiring does NOT include a 12V auxiliary power feed that could power inside…

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Answer 6

The only way you could power interior dome lights on a trailer without it being connected to a tow vehicle would be to power the lights with a battery like a breakaway battery. How you choose to wire up the batteries will in the end be up to you,…

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Answer 7

If you are installing just the Firestone Ride-Rite kit, #F2400, and not also adding an on-board air compressor such as #F2158, then I would estimate that it should take about 2 hours to install the kit. That is for someone with some mechanical…

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Answer 8

Seal 171255UC has an inner diameter of 1.719 inches and outer diameter of 2.565 inches. A seal that has those dimensions would actually be #58846. I've added a link to a video review of this seal for you to take a look at.

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Answer 9

If you are needing the hub and drum assembly then you will want to go with the Dexter Trailer Hub and Drum Assembly #8-201-5UC3-EZ but if you are just looking for an idler hub then you will want part #8-213-5UC1 instead. These come with the correct…

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Answer 10

I agree it is the right time to upgrade to a Lithium charger/converter as not all are Lithium compatible. I recommend using the Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger - 60 Amp #PD4060K which is a replacement for…

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Answer 11

The great thing about Bearing Buddy like part #BB1781 is that when you add grease to your system with the included fitting, it will move the spring-loaded piston outward and allow grease to seep around the edges to keep from damaging the seal. You…

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Answer 12

We have had a similar question to this come up and we were able to determine that the number AS-13 M-VDO449 that you listed is stamped on the vent cover part #BVD0449-A01. If you are looking for the entire fan setup and not just the cover you would…

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How Do I Know Which Hub Assembly to Use on My Trailer?

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