Dexter Electric Over Hydraulic Actuator Will Not Build Pressure
Question:
Pmp wired correctly. No hydraulic leaks. Reservoir full. Pump 10 years old. Recent caliper replacements. Pump operates as designed but never builds up pressure. Disconnect line at and activate. Doesnt look like 1600 psi to me. Triple axle. No brakes whatsoever
asked by: Chris
Expert Reply:
I spoke to a Dexter engineer about the issue you are having with your actuator. They informed me that it could be one of two different things not allowing the pump to build pressure. These two things could be an issue with the control board or the proportioning valve.
The first thing you will want to check is the control board. The control board which sends voltage to the proportioning valve could be faulty. In order to test this you will need to pull the breakaway pin and see if you get any pressure. If you do then you know the control board is bad but if not then this points to signs of a bad proportioning valve.
The portioning valve is located deep inside the unit and will open and close based on the voltage it receives from the control board. If this valve is blocked or clogged then that could then prevent the valve from closing which means you would not have any pressure. Therefore, I recommend disassembling the unit and cleaning the screen that goes to the valve as well as inspecting it for any other foreign objects.
Unfortunately, the proportioning valve and control board are not offered as replacement parts for the actuator so if clearing the valve does not help your only option would be a full replacement for which I recommend using the Dexter DX Series Electric Over Hydraulic Brake Actuator part # K71-651 for disc or part # K71-650 for drum brakes.
Products Referenced in This Question
Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes - 1,000 psi
- Brake Actuator
- Electric-Hydraulic Brake Actuator
- 1000 psi
- Drum Brakes
- Dexter
more information >
Product Page this Question was Asked From
Dexter DX Series Electric Over Hydraulic Brake Actuator for Disc Brakes - 1,600 psi
- Brake Actuator
- Electric-Hydraulic Brake Actuator
- 1600 psi
- Disc Brakes
- Dexter
more information >
Featured Help Information
Instructions
Continue Researching
- Search Results: electric~hydraulic brake actuator brake actuator
- Video: Review of Titan Brake Actuator - SD Ford/Chevy Brake Controller Adapter - T4845900
- Shop: Adapter Module for BrakeRite Electric Over Hydraulic Actuator - OE Ford, GM Brake Controllers
- Shop: Dexter BrakeRite SD Adapter for Ford/Chevy Integral Brake Controllers
- Shop: Hydrastar Electric Over Hydraulic Actuator Adapter Module for Ford and Chevy Brake Controllers
- Shop: Dexter DX Series Electric Over Hydraulic Brake Actuator for Disc Brakes - 1,600 psi
- Video: Review of Dexter Axle Brake Actuator - EOH Actuator Adapter Module - DX35FR
- Q&A: How To Use Dexter DX Series Electric Over Hydraulic Brake Actuator With Factory GM Brake Controller
- Search Results: kodiak disc brakes
- Search Results: underbelly
- Shop: Kodiak Hydraulic Brake Hose - FIF and 90-Degree Male Fittings w/ Stainless Flares - 1.5'
- Search Results: dexter brake actuator
- Search Results: kodiak trailer brakes
- Search Results: 16 inch 6 lug aluminum wheels
- Shop: Kodiak Disc Brake Kit - 12" Hub/Rotor - 6 on 5-1/2 - Dacromet - 5,200 lbs to 6,000 lbs
- Shop: Grease Cap, 2.44" OD Drive In with Plug - Qty 2
- Q&A: Troubleshooting Dexter Brake Actuator
- Q&A: Fixing a Dexter Electric Over Hydraulic Brake Actuator that Pulses
- Q&A: Troubleshooting Titan Brake Actuator That Just Clicks And Does Not Pump Fluid
- Q&A: Troubleshooting Dexter Electric Over Hydraulic Trailer Brake Actuator Cycles On and Off
- Q&A: Wiring Diagram for Dexter DX Series Electric Over Hydraulic Brake Actuator
- Article: How to Bleed Your Trailer Surge Brakes
- Q&A: Dexter Electric Over Hydraulic Actuator Not Working with Ford Factory Brake Controller
- Video: Review of Dexter Axle Trailer Brakes - BP18-075
- Video: Dexter Axle Brake Actuator - Electric-Hydraulic Brake Actuator - K71-650 Review
- Search Results: k58 036 00
- Article: Trailer Drum Brakes vs. Disc Brakes: Making the Decision
- Video: Review of etrailer Trailer Brakes - Disc Brake Caliper - e58GR
- Video: Review of Dexter Axle Trailer Brakes - Replacement Brake Pads - BP04-395
- Article: Brake Controller Installation on a Full-Size Ford Truck or SUV