Troubleshooting EOH Brakes Not Activating

Question

Question:

Have been very happy with my electric over hydraulic brake system I installed just at a year ago till last week when traveling to Gulfport, Mississippi and trailer brakes failed. Since then, I have gone through all the wiring, etc and tried the pull the emergency cable and didnt get a response from the pump. Please let me know what to do here as I am pretty handy.

asked by: Marshall H

0

Expert Reply:

The first thing I would do is check for power. Using a circuit tester like # PTW2993 check to see if 12V power is running to the # HS381-8066 when you use your manual override on the brake controller. If you have power here and no brakes it is likely the actuator. Go ahead and call Hydrastar directly to see about warranty work since it is under a 2-year warranty.

If you do not have power here then it is a problem with the trailer connector or on the vehicle side. Go ahead and check both of your 7-way connectors for any corrosion or damage. Clean as necessary. After that, check for power on the 7-way of your vehicle. If you have power here and you still have no power running into the actuator on the trailer side after cleaning it you probably have a damaged 7-way. You can attempt to repair it or just replace it with one like # H20046.

If you do not have power on the vehicle side check right behind your 7-way. If you have power here but not at the connector it could be a loose pin. If all of that checks out go ahead and check for power behind your brake controller to make sure it is not the issue. If it is, double check all of the wiring and ground connection. If power is coming out of the brake controller then it may be a short in the vehicle wiring. If this is factory wiring you can also check the trailer fuses to make sure they aren't blown.

expert reply by: Robin H

0

Answer 1

You will naturally see some voltage drop from the brake controller all the way back to your trailer brakes, but what you're describing sounds like a bad ground somewhere. What you need to do is check the grounds related to the trailer brakes…

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Answer 2

The first thing I recommend checking is the output setting on the brake controller. If adjusting the power level does nothing to solve the problem, then we can work out way back. Check the vehicle and trailer side connectors for any dirt or…

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Answer 3

It sounds like you need the Hydrastar Electric Over Hydraulic Actuator Adapter Module #HBA-CAM for the OEM brake controller on your 2022 Ram 3500. This will ensure that your controller works properly with the Hydrastar Electric Over Hydraulic…

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Answer 4

The key number you referenced having is associated with an older Diversitech ball mount. I do have an option available for you to consider, however we do not currently carry the replacement key for the R3223 model as it's not available. If…

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Answer 5

The Kodiak Oil Cap #KPCAP you are looking at is a replacement cap for the Kodiak Pro Lube Kit. The oil cap you need is the Redline Oil Cap, Plug and O-Ring for Dexter 7-9K Trailer Axles #RG04-230. This will replace the oil cap on your trailer axles…

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Answer 6

Thanks for the photos! From what I'm seeing it looks like you're needing the Replacement Adapter Port for Kodiak Disc Brake Calipers and Solenoid Valves #K22590A. This has the same basic design shown in your pictures and it has 1/8" NPT…

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Answer 7

In regards to an electric over hydraulic actuator, the 1,000 psi model is for drum brakes and the 1,200 psi model is for disc brakes. The size of the axle, etc. are not factors. The most popular option we offer is the HydraStar Vented Marine Electric…

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Answer 8

The first step to bleed the brakes is to have the Carlisle HydraStar Electric-Hydraulic Actuator #HBA16 activate so that hydraulic pressure is being made in your brake system. You can do this by having somebody step on your tow vehicle brakes while…

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Answer 9

The big difference is that the #HS381-8066 is for marine applications so that means it has stainless steel hardware and a marine grade gasket which allows it to stand up a lot better to corrosion than the #HBA-12.

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Answer 10

Below is the general process for bleeding an electric over hydraulic brake actuator like #K71-650. Fill reservoir with NEW brake fluid. Never re-use brake fluid that has been salvaged or removed from another system. Remove the key from the breakaway…

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Answer 11

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 12

The first thing I would do is check for power. Using a circuit tester like #PTW2993 check to see if 12V power is running to the #HS381-8066 when you use your manual override on the brake controller. If you have power here and no brakes it is likely…

view full answer...