How to Determine Correct Electric Trailer Brake Size

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Question:

I have a Shorelander boat trailer model 1824. What brake assembly should I use to replace them.

asked by: Pat

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Expert Reply:

We don't have any way of knowing the brakes you need for your Shorelander boat trailer but can tell you how to determine the right ones. To determine the brake assemblies that will fit your trailer, you need to know your axle's weight capacity, your mounting flange bolt pattern and the inside diameter and depth of your drum.

For example, the Electric Trailer Brake Kit # AKEBRK-35-SA are for 3,500 lb axles, measure 10" diameter x 2-1/4" wide (so that is the drum size they fit in) and fit a 4-bolt mounting flange that has bolt holes which measure 2-7/8" apart on center like Mounting Flange # 4-35.

The accompanying photo shows the dimensions of the brake mounting flange, which you can use to compare to yours.

I have added a link to our entire selection of electric brakes for you to come back to once you know this information, or you can let me know your axle capacity, flange, and drum size and I will be happy to find the right parts for you.

expert reply by: Kyle S

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Answer 1

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 2

I do have a couple possible solutions for raising your pontoon trailer, however increasing the shackle strap size will not be your best option. A more efficient way for raising the suspension on the trailer will be to use longer hangers. Unlike…

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Answer 3

You would know to replace brake shoes the same way you would know with a vehicle. If performance is suffering and adjusting the brakes does not help and there are no other issues causing the poor performance it is probably time to change the brake…

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Answer 4

When determining if you need 10 inch or 12 inch brake assemblies there are a couple of easy things to check to confirm the fit for your trailer. The first thing is you can measure the diameter of your hub. The second thing is you can look at the…

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Answer 5

Hello Stephen, thanks for reaching out. We should have the parts you need, but unfortunately we do not have a way to reference a VIN number to know what parts you need. Trailers are not standardized like motor vehicles, and trailer manufacturers just…

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Answer 6

Hello Alan, thanks for reaching out. We likely will have a brake drum that will fit your trailer, but I do not have a way to accurately recommend a drum based on the info from the backing plate you provided. The numbers you provided indicate a Dexter…

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Answer 7

The Dexter Electric Brake Kit #23-450-451 are the brakes you will need for your 2018 Big Tex 22GN with the 10,000lb Dexter axles. These are sold per axle so you will need 2 sets to replace all 4 of your brake assemblies. They are also sold…

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Answer 8

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 9

The first error code, SH, you are seeing on the Prodigy Brake Controller (instructions linked below) means the brake wire sees a short circuit during idle condition. The second code, OL, indicates an overload condition during operation. For the first…

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Answer 10

Let's start with your tires and the best 175/80-13 tire is absolutely the radial tire, the Karrier ST175/80R13 Radial Trailer Tire - Load Range D #AM10210. The reason you want to use this tire over the Bias #AM1ST77 you mentioned is because…

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Answer 11

In most cases, you can just simply add brakes to the existing axle and you don't need an entire new axle. That said, this is all based on the axle capacity and I don't have any way to look this up for you. If you have a 3,500 lb axle for…

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Answer 12

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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How to Determine Correct Electric Trailer Brake Size

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