Converting From Electic Drum Brakes To Hydraulic Disc Brakes

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Question:

Im looking into converting a gooseneck trailer with 10000 lbs dexter axles and dual tires to hydraulic disc brakes. It currently has 12 1/4inch x 4 electric brakes with a 8 bolt 61/2inch circle hub w 5/8inch studs. What all components will I need to make this conversion possible?

asked by: Andrew C

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Expert Reply:

To convert electric drum brakes to electric-over-hydraulic disc brakes you will need disc brake assemblies, a brake line kit and an electric over hydraulic actuator.

For disc brake assemblies, the Kodiak Disc Brake Kit # K2R1058D13 kit is what I recommend. To determine the correct brake line kit you will want to measure the distance from your actuator to the front axle. The kits are measured in the distance from the actuator to the front axle. For a 20-ft, 24-ft, or 25ft brake line kit I recommend part # HS496-252.

If you do not have a breakaway kit installed I recommend a kit like part # 20099. The # HBA16 is a compatible actuator and a brake controller I recommend is the Tekonsha Prodigy P3 Trailer Brake Controller part # 90195 if you don't already have one.

expert reply by: Patrick R

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Answer 1

I spoke to Dexter and they said there is a bit of a process for installing the spindle nut properly. 1. You will need to thread on the inner nut, rotate the hub, then tighten the nut to 100 foot pounds. 2. Loosen the nut to remove the torque, making…

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Answer 2

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 3

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 4

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

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Answer 5

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 6

The Demco Hydraulic Trailer Brake Actuator part #DM72VR should be a direct replacement for the Atwood 61101 Brake Actuator that you have now. This newest updated it rated at 7K instead of 6K. This is a bolt on option that mounts on 3" centers.…

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Answer 7

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 8

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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Answer 9

Hey Dwyane yes that is necessary unfortunately. We do have disc brake kits like the DeeMaxx Disc Brake Kit #DE68YR which will work with 7,000 lb axles that uses specific bearings. The last couple of things you'd need is a brake line kit…

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Answer 10

First you will need to remove the old hydraulic equipment. Remove the surge coupler or actuator, remove all the lines, and finally remove the brake assemblies. If you have 10 inch diameter hub and drums, you may need to replace those as well. If you…

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Answer 11

You will need to measure the diameter of the spindles where the seal and bearings ride. Check out the picture I attached that shows where this is. You will need an exact measurement so either a digital or dial caliper will be needed. To pick out the…

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Answer 12

Hey James, you can go with a 4k axle leaf spring like the part #e22YR in place of what you have now while it has a slightly higher weight capacity it's not enough that it would create a harsh ride quality. This is a 26 inch long spring though so…

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Converting From Electic Drum Brakes To Hydraulic Disc Brakes

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