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Titan BrakeRite Electric Over Hydraulic Actuator Malfunctioning With Factory Brake Controller


I have a 5th Wheel with Disc Brakes and a Titan/BrakeRite EHB When connected to my 2009 Chevy Silverado truck, the brakes sometimes work, sometimes dont. The symptom is: If I apply the brakes very slowly by either the brake peddle or manually with the controller switch, the brakes work as they should and I can feel the trailer pull and hear the BrakeRite EHB moan like it should. When I apply the brakes normally they do not work at all and I can hear the BrakeRite EHB high pitch whine like its running at full speed with no pressure. I had the brake fluid completely purged with new DOT3 and vacuum bled by a Trailer Repair shop, but it didn't help. I took it to a 2nd Shop and had them also vacuum bleed them to be 100 sure and it still does the same thing. The EHB is full to the top of DOT3 Brake Fluid. I tried replacing the factory Brake Controller with a P3, but it does the exact same thing. Before I shell out $800+ to replace this EHB, is there anything I should look at? Its hard to believe this EHB failed in less than 3 years with only a couple of trips with the RV.


Expert Reply:

First I want to verify that you are using either the Titan BrakeRite SD Adapter # T4845900 for the plug and play or the Adapter Module # DX35FR for a hardwired Titan BrakeRite actuator. These adapters are needed for the factory brake controller to function properly with the BrakeRite actuator. With you having installed a Prodigy P3 # 90195, as long as it was set to function as electric over hydraulic on the controller it would not require the adapter.

Typically with the Electric-Hydraulic Actuator # T4813102, the only test is pulling the breakaway cable and ensuring it activates. Any other issues may be caused by damaged wiring or possibly a bad ground connection.

expert reply by:
Gregory M

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