Adding Brakes to 3,500 lb Axles with 6 Lug Hub

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Question:

I currently have 6 lug hubs on my 3500 lb axles 6 on 5 1/2. Im wanting to replace my axles with ones that have brakes but dont want 5 lug hubs on them since I happen to have new tires and wheels on my current axles 6 on 5 1/2. Can you tell me how to get 6 lug - 3500 lb axles with brakes? 74/89 Thank you

asked by: Van

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Expert Reply:

If your 3,500 lb axles have brake mounting flanges then you can simply install the Electric Brake Kit # AKEBRK-35-SA and use the Hub and Drum Assembly # AKHD-655-35-EZ-K which is compatible with 10" brakes and has the 6 on 5-1/2" bolt pattern.

For a complete replacement axle that meets your specs you can use the Dexter Trailer Axle w/ Electric Brakes # 8327820-EB instead. This matches your hub face and spring center measurements as well as the 6 on 5-1/2" bolt pattern. The higher weight capacity won't be an issue and you'll be able to use the same leaf springs so your suspension won't be more rigid, but you will need to use the U-Bolt Kit # APUBR-8 to accommodate the larger diameter of the trailer axle.

To wire your trailer for the brakes I recommend picking up the Junction Box Kit # HS381-9000, as much 10 Gauge Wire # 10-1-1 as needed to route the wiring, Butt Connectors # DW05745-10, and then a breakaway kit # 3802346.

Attached are some installation videos and a helpful article about adding electric brakes to a trailer for you to check out.

expert reply by: Jon G

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Answer 1

We would need to know more about your trailer axles to know exactly what you need. You would need to swap out a decent amount of your axle components to get this done. Let's assume that your using a wheel size of 14-1/2",…

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Answer 2

Yes, there is a measurement you can take to determine what size brakes you need and if they will fit your existing drums. You will want to measure the diameter of your drums. I have included a diagram detailing the dimensions you will need to find.…

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Answer 3

For your 5200lb Axis Products Inc. 5200lb axles you should be able to use the Electric Trailer Brake Kit - Self-Adjusting - 12" - Left and Right Hand Assemblies - 5.2K to 7K #AKEBRK-7-SA, but since Axis was bought by AL-KO they may use the…

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Answer 4

For a wheel that is 5 inches in width and 15 inches in diameter you would want tires that are size ST205/75-15. For the tire size ST225/75R15 you listed you would want a rim that is from 6-7 inches in width. I attached a department page that has all…

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Answer 5

Any given tire will fit a range of rim widths. The ST225/75-15 tire will fit 6, 6-1/2, and 7 inch rims, but not a 5 inch rim. The tire will not be able to seat properly on the rim and you will not be able to keep air in it or safely use it. As far as…

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Answer 6

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 7

I did some checking and the hub/drum we offer that will work for you is the part #8-430-5UC3. This uses the same bearings as the 8-415 and will be an exact fit aside from the fact this is a non-ABS setup and the 8-415 came in an ABS setup and non-ABS…

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Answer 8

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 9

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 10

The correct replacement master cylinder kit we have for your Demco setup is the part #DM5918 which comes with the lock out replacement.

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Answer 11

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 12

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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Adding Brakes to 3,500 lb Axles with 6 Lug Hub

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