3,500LB Trailer Axle Self-Adjusting Electric Brakes and Hub For 13" Diameter Wheels

Question

Question:

I am looking at your Item # AKEBRK-35-SA 10 electric brake kit. I will be installing these on a trailer to move a boat around, not much water contact. My axle is a 3500#, 13 wheel, with 2-7/8 welded brake plate. Can you help me with the hubs needed for this? Thank You

asked by: David F

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Expert Reply:

As long as your 3,500lb axle uses a #84 Spindle like # TRU74FR you will need the Easy Grease Trailer Hub and Drum Assembly # AKHD-545-35-EZ-K to use with the Electric Trailer Brake Kit # AKEBRK-35-SA. This hub uses a Grease Seal # 58846(inner diameter 1.719"), Inner Bearing # L68149(inner diameter 1.378") and Outer Bearing # L44649(inner diameter 1.063"). If your spindle has different measurements or parts used please let me know and I can confirm the correct hub.

A Digital Caliper # PTW80157 is the best way to get an accurate measurement for your spindle.

expert reply by: Bud M

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Spindle and Hub Measurement Points
(click to enlarge)

Answer 1

We do carry the Lippert Electric Trailer Brake Assemblies Left #LC96WD and Right #LC46WD from Lippert for their 4,400lb axles. These brakes are self-adjusting like the Electric Trailer Brake Kit #AKEBRK-35-SA.

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Answer 2

If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other…

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Answer 3

With the limited information available on your 1973 Airstream Argosy 26 D I do recommend verifying the following parts are the same size as what you currently have(see images). The Electric Trailer Brake Kit #AKEBRK-35-SA fits a drum that is 10"…

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Answer 4

They are generally pretty universal. You want to check to see how many bolts there are on the brake flange, get overall diameter and the overall thickness of the shoes. For instance the very popular Electric Trailer Brake Kit part #AKEBRK-35-SA is a…

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Answer 5

It sounds like you may have a poor ground connection which is causing low voltage when you are testing. Sometimes it may look like we have a really good ground point but some paint or debris is getting in the way and causing issues. What I recommend…

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Answer 6

Hello Ivan. Thanks for all the information. 4K axles are not all that common now a days. If you are not loading the trailer at full capacity then you will definitely be safe using the etrailer Electric Trailer Brakes - Self-Adjusting - 10" -…

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Answer 7

The Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs part #AKEBRK-35-SA does not have specific bearings or seals that match up with it. The bearings, races and seal are determined by the hub. Since…

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Answer 8

Really the only way to tell if you have manual or self-adjusting brakes is to remove the hub and take a look inside. If you can see a cable running at an angle (see included photo), then you have self adjusting brakes like the Electric Trailer Brake…

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Answer 9

I have included a link to a video on adjusting self-adjusting brakes. Basically there is a device on the adjustment wheel on these brakes that prevents the shoes from adjusting back inward. You have to sort of move that out of the way to be able to…

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Answer 10

Yes, leaf springs must be replaced in pairs which is why one side left go and then the other shortly after. In regards to the stent you get on a full set of leaf springs, there are really a ton of variables present here so it is hard to predict.…

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Answer 11

Yes the 4,000-lb leaf spring is compatible with a 3,500-lb axle. There are a couple of important measurements. Spacing from eye to eye on the spring when unloaded with no weight on the axle. Inner eye diameter of the spring roll Spring width from…

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Answer 12

To replace the UFP HD-1377 hub/drum assembly and your 10" electric trailer brakes you'll need the following parts: - 10" Electric Trailer Brake Kit - Self-Adjusting #AKEBRK-35-SA - Trailer Hub and Drum Assembly - 3,500-lb Axles…

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3,500LB Trailer Axle Self-Adjusting Electric Brakes and Hub For 13" Diameter Wheels

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