Carlisle Hydrastar Electric Over Hydraulic Trailer Brake Actuator Does Not Cycle On/Build Pressure

Question

Question:

Im trying to trouble shoot above referenced Hydrastar. 3-4 year old unit has workied properly in past but no longer can hear motor running when unit has confirmed 12volts to unit. I hear a click only and the brake lines do not pressurize. Any ideas?

asked by: Bill K

0

Expert Reply:

Your Hydrastar actuator is not cycling on to build pressure to apply the brakes when needed. This could mean that there is an electrical problem or a malfunction with the motor, or even a problem with the brake controller You have stated that there is confirmed 12 volt power going to the unit but it could still be an electrical problem.

You can also make sure that the Hydrastar white ground wire is connected to the vehicle ground and not to the trailer. They are very particular about this ground connection and it must be connected to the vehicle ground.

To further test the unit, leave on the blue, black, white, and yellow (or blue with white stripe) wires. Make sure it is disconnected from any other wires going to the tow vehicle or breakaway system.

Use a separate 12 volt battery and connect the white wire directly to the negative terminal then connect the black wire to the positive terminal. The motor should NOT run at this time. If it does then there is a problem inside and it will need to be repaired by Carlisle.

Next leave the white wire connected to the negative terminal then connect the blue and black wires together to the positive terminal. The motor should now run and pressurize. If it does not, it will need to be repaired by Carlisle.

Then you can leave the white wire attached and connect only the yellow or blue wire with white stripe to the positive terminal. the motor should run and pressurize. If not, it needs to be repaired by Carlisle. If everything checks out then reconnect the unit to the trailer connector and repeat the tests again. If it does not work then there is a trailer wiring problem or problem with the brake controller.

If you recently changed brake controllers or vehicles and the new vehicle has an integrated controller, that could be the problem. There are only certain brake controllers approved for use with the Hydrastar.

expert reply by: Michael H

0

Answer 1

Your Hydrastar actuator is not cycling on to build pressure to apply the brakes when needed. This could mean that there is an electrical problem or a malfunction with the motor, or even a problem with the brake controller. I have included a picture…

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Answer 2

First I have linked the instructions for the HydraStar Electric Over Hydraulic Actuator for Disc Brakes #HBA16 below as these may help you now and in the future. Typically when the HydraStar is clicking it means that the trailer brake controller is…

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Answer 3

A dead breakaway batter can cause an actuator to not work properly. The actuator draws power from the breakaway battery and the tow vehicle, but most of the amps will be drawn from the battery. The tow vehicle basically just provides a maintenance…

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Answer 4

The #HBA-CAM adapter will not interfere with the actuator working on your 2006 Dodge Ram that does not require the adapter. It basically just puts enough load on the output circuit so that the controller thinks a trailer is connected. That additional…

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Answer 5

The Tekonsha Prodigy P3 #90195 is actually one of the best options to use with an EOH setup. You should not have any problems using it with the HydraStar Electric Over Hydraulic Actuator #HBA-10 when it is set to EOH mode. Since you tested it with…

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Answer 6

The Prodigy P3 trailer brake controller uses a 4-wire hookup. The white wire is to be grounded to the battery negative terminal; the black power wire connects to the battery hot terminal through a circuit breaker; the red wire takes in the brake…

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Answer 7

Yes, you have a couple of ways to test the Dexter DX Series Electric Over Hydraulic Brake Actuator #K71-651. The first test to try is to connect the white wire to the negative post of the battery. Then connect the black wire to the positive post on…

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Answer 8

I confirmed the compatibility of your 2012 Ford F-150 with integrated controller and the HydraStar EOH Acutator for Drum Brakes #HBA-10 with my technical contact at HydraStar. You will not need the #HBA-CAM or an aftermarket controller to use this…

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Answer 9

The first step is to ensure that your brake controller is compatible with the HydraStar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes #HS381-8067. I recommend contacting HydraStar directly for compatibility details. If your…

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Answer 10

The clicking noise you heard typically occurs when the factory brake controller isn't compatible with electric over hydraulic brake systems. Since everything worked fine up until recently, the problem most likely does lie with your #HBA-CAM.…

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Answer 11

To properly operate the actuator #K71-651, the brake controller you are using needs to be compatible with electric over hydraulic braking systems. We offer the Tekonsha Prodigy P2, part #90885 that would work great for you. If the brake controller is…

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Answer 12

This is a really good question, but the short answer is that the Ford OEM brake controller of your 2019 Ford F-350 is compatible with the Hydrastar actuators like #HBA16. The chart you found where it says only up to 2017 hasn't been updated…

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Carlisle Hydrastar Electric Over Hydraulic Trailer Brake Actuator Does Not Cycle On/Build Pressure

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