Replacement Hydraulic Drum Brake System for a Single Axle Magic Tilt Boat Trailer

Question

Question:

I have a cart assembled to put brakes on my 2017 trailer. It’s single axle, built by magic tilt. No existing brakes. 14” wheels w 5 lug pattern. Is this all I would need? I want my trailer to back up without needing to do anything.

asked by: Scott C

0

Expert Reply:

Yes, you have done your research well. These parts will fit together and allow you to back up without needing anything else. I can confirm that Demco Hydraulic Brake Actuator item # DM8609101 will work with the Hydraulic Trailer Brake Kit - Uni-Servo - Dacromet - 10" - Left/Right Hand Assemblies - 3.5K item # AKUBRK-35-D. These brake assemblies are compatible with the Easy Grease Trailer Hub/Drum Assembly for 3.5K Axles - 10" Diameter - 5 on 4-1/2 - Galvanized item # AKHD-545-35-G-EZ-K. They fit inner bearing item # L68149 (1.378" inner diameter) and outer bearing item # L44649 (1.063" inner diameter).

From my research it looks like Magic Tilt single axle trailers are 9' - 16' long. You can use either the Kodiak Hydraulic Brake Line Kit - 15 Feet item # 15SI-BLKIT or 18 Feet item # 18SI-BLKIT depending on your needs.

You may also need the Brake Adjustment Spoon for Drum Brakes item # W80630.

expert reply by: Jerred H

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Answer 1

Hey Al, so we have a solution but since disc brakes require a higher PSI than drum the #DM62VR would not work on drum brakes. Instead you'd want to go with the part #DM72VR which is basically the exact same thing but made for drum brakes. You…

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Answer 2

I would be happy to help! As long as the A-Frame on your trailer is the standard 50-degree angle then the best option to replace your current surge brake actuator would be the Demco Hydraulic Brake Actuator w Drop - Drum - Primed - A-Frame -…

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Answer 3

The Demco Hydraulic Trailer Brake Actuator #DM72VR that you referenced has a master cylinder fitting that has a female threaded portion which is pretty standard on trailer actuators. Typically brake line fittings spin on the line so that they can…

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Answer 4

We sure do! The Demco Surge Brake Actuator #DM8609101 you were looking at has mounting holes that are 3" apart from the front hole to the second hole, 9-1/2" apart from the second hole to the last hole, and 12-1/2" apart between the…

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Answer 5

I was able to go out to our warehouse and measure the Demco Hydraulic Actuator #DM72VR for you. I found that the center of the mounting hole was 1-5/16 inches away from the master cylinder, so I recommend drilling the center of your mounting hole at…

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Answer 6

I have attached for you below a photo which shows the bolt pattern for the Demco Hydraulic Brake Actuator part #DM72VR.

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Answer 7

I do have a solution for you, however the Atwood 84132 actuator referenced in your question is no longer available from the manufacturer. For a very similar unit that you can use to replace your actuator, I recommend taking a look at the Demco…

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Answer 8

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 9

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 10

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 11

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 12

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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Replacement Hydraulic Drum Brake System for a Single Axle Magic Tilt Boat Trailer

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