Parts Needed to Add Electric Drum Brakes to Trailer with 5-on-5-1/2 Bolt Pattern 15-Inch Wheels

Question

Question:

I used to have brakes on my trailer, I want a new hub assembly rotor, bearings, seals and backing plate with pads. How do I order. I have 5 on 5 1/2, 15inch wheels,and will be hauling around 4,000 pounds.

asked by: Rick

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Expert Reply:

To find hub/drum assemblies for electric drum brakes that will fit your existing spindles you will need to find the bearing part numbers from the existing hubs. The 5-on-5-1/2-inch bolt pattern hub/drums we offer for 15-inch wheels are shown on the linked page. These are available in weight capacities to match 2000-, 2200- and 3500-lb axles. Be sure to choose hubs rated for your axle; usually there will be a plate or sticker on the axle that tells you its weight rating.

For example, if you have a 3500-lb-rated axle and your hubs use bearing set L68149/L44649 then you could use 10-inch hub/drum kit # AKHD-555-35-EZ-K if you have EZ-Lube spindles or part # AKHD-555-35-K if you have standard spindles. Both kits include the hub/drum, bearings, races, seal, lug nuts and grease cap.

Electric drum brakes also should be selected based on axle weight rating and to match the size of your drums. For the 3500-lb-rated 10 x 2-1/2 hub/drums noted above you could use self-adjusting brakes # AKEBRK-35L-SA (left) and # AKEBRK-35R-SA (always select a left and right side brake).
Also note the mounting pattern on your brake flanges to ensure you select brakes that will bolt up properly. The electric drum brakes noted above use a 4-bolt mounting pattern.

The linked article on adding electric brakes to a trailer will be useful to you as you as you plan your project.

You will also need a trailer brake controller to generate the signals for your trailer brakes. The Prodigy P2 # 90885 is a superb controller that is not super expensive, but it has been proven to be very reliable and easy to set up and operate.

expert reply by: Adam R

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Answer 1

The mounting flange bolt pattern for the Dexter Electric Brake Kit for 4 Bolt or 5 Bolt Flange #23-105-106-09 measures 3-1/8" between the top two holes, 2-1/2" between the lower two holes, and 3-3/8" between the top and bottom holes.…

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Answer 2

Technically yes, if you were replacing idler hubs, as long as the inner/outer bearing, grease seal AND wheel bolt pattern match, there's nothing that prevents you from using a 3,500 lb axle hub, like #84545BX on a 2,000 lb axle. If the bearings…

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Answer 3

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 4

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the '90s.…

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Answer 5

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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Answer 6

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

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Answer 7

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 8

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 9

Hey Jeremy, Typically with boat trailers the manufacturer will install hydraulic surge brakes because you don't have to worry about the water damaging wires like you would with electric brakes. That being said, if you use a heat shrink butt…

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Answer 10

We do have what you need to replace the UFP HD-1377-10 hub and drum as well as add hydraulic brakes for your boat trailer. Here are the exact parts you will need: - Dexter Trailer Hub and Drum Assembly #84546UC3 - Hydraulic Trailer Brake Kit -…

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Answer 11

There really isn't a particular maximum trailer weight that is used to determine when brakes need to be added to both axles of a tandem axle setup. While I do still recommend checking your local laws, I am also not aware of any general laws that…

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Answer 12

I currently have three diffrent self-adjusting assemblies for your boat trailer with 10" x 2-1/4" electric drum brakes which are attached for you below. eTrailer Electric Trailer Brake Kit part #AKEBRK-35-SA (3,500 Axles) Dexter…

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Parts Needed to Add Electric Drum Brakes to Trailer with 5-on-5-1/2 Bolt Pattern 15-Inch Wheels

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