Air Brake Conversion for Electric Over Hydraulic Actuator Compatibility

Question

Question:

Conversion for electric over hydraulics actuator Which actuator do I need to convert a air over hydraulics to electric over hydraulics drum brakes that is compatible with 2016 Ram 3500.

asked by: Richard H

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Expert Reply:

For a conversion from air brakes to electric over hydraulic drum brakes on a trailer, I recommend the Hayes Air Actuated Trailer Brake Controller - 1 to 4 Axles - Proportional # HA100400C. This brake controller converts the air brakes to the electric signal needed that is compatible with electric over hydraulic trailer actuators.

If you don't already have an electric over hydraulic drum brake actuator I recommend the HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,200 psi # HBA-12. If you don't already have the electrical connections on your trailer then I recommend the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,200 psi # HS381-9066 which will give you the entire kit you need for that conversion.

expert reply by: Jason S

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Answer 1

The etraile Trailer Brake Assembly you referenced, part #AKEBRK-12, is intended for 12K-rated axles. This brake assembly uses a 7-bolt mounting pattern to attach to the axle brake flanges. This mounting bolt pattern is not compatible with the other…

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Answer 2

Brake actuators designed for drum brakes typically produce around 1,000 psi pressure at most, while disc brake actuators will produce closer to the 1,600-psi pressure that you mentioned in your question. I do not recommend using a disc brake actuator…

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Answer 3

If you are needing the hub and drum assembly then you will want to go with the Dexter Trailer Hub and Drum Assembly #8-201-5UC3-EZ but if you are just looking for an idler hub then you will want part #8-213-5UC1 instead. These come with the correct…

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Answer 4

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 5

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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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

The correct replacement for a Demco Master Cylinder 05680-C is the Replacement Master Cylinder part #5650. I spoke with Demco to confirm this for you.

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Answer 8

Since you have a wheelbase/axle spacing of 38 inches the correct hanger kit for slipper springs would be the part #HAP-105-205-01. And then for a 7k trailer axle the u-bolt kit you'd want would be the part #APUBR-8. I attached the diagram to use…

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Answer 9

For your enclosed trailer application I have several suggestions for adding interior lighting that you can control directly via a switch. Since your current 4-pole trailer wiring does NOT include a 12V auxiliary power feed that could power inside…

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Answer 10

The only way you could power interior dome lights on a trailer without it being connected to a tow vehicle would be to power the lights with a battery like a breakaway battery. How you choose to wire up the batteries will in the end be up to you, but…

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Answer 11

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 12

If your old axles have a 5 bolt brake flange the assemblies like Dexter Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs part #23-105 or Dexter Electric Trailer Brake Assembly - 12" - Right Hand - 6,000 lbs part #23-106 will…

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