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How To Convert From Surge Brakes To Electric Over Hydraulic


Hi, I have a trailer with Tiedown surge disc brakes. The calipers are 46304A and a model 80 actuator. Can I convert to electric over hydraulic with the existing calipers and just replace the actuator? Thanks


Expert Reply:

With the Caliper you currently have, switching from surge to electric over hydraulic is not going to work because your current caliper only requires 1000 psi. An electric over hydraulic kit requires 1500 psi.

With a surge brake set up the fluid is forced to the brakes when the vehicle slows or stops by pushing the coupler back. I rod is connected from the coupler to the master cylinder which is filled with fluid. As the coupler pushes the rod back into the master cylinder it pressurizes it at which point the fluid is forced out to the brakes. A surge set up does not require as much pressure to force the fluid out to the brakes which can affect stopping power and brake reaction time.

An electric over hydraulic system works similar however, the actuator is pressurized as soon as the brakes are applied because it is receiving an electrical signal from the brakes. You get immediate braking and an increase in stopping power. Keep in mind with an electric over hydraulic set up it does require a brake controller and may require a few extra brake lines to connect the new actuator.

I recommend replacing your calipers so they can handle the electric over hydraulic kit with the Replacement Caliper for Dexter Titan Premier Disc Brake Kit - Dacromet - 3,500 lbs Item # 225CAL.

As far as an actuator I recommend Titan BrakeRite EHB Electric-Hydraulic Actuator for Disc Brakes
Item # T4813100

expert reply by:
Shane H

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