Troubleshooting Electric Over Hydraulic Disc Brakes
Question:
Hydraulic disk breaks Ok here is a problem we are having with one trailer It seems like the hydraulic pump is over pressure it the disk breaks on this trailer we have replaced several calipers on the trailer in the last year along with rotors and pads. It’s being pulled now with a 2018 Ford F-350 and before that it was a dodge 3500 17 year model. On the dodge you could set the breaks at 3.5 or 4.5 with heavy load and it would slowly grab. With the ford set at 2.5 or 3 it will lock up and take a bit to release and if it is set over 3 it will blow the caliper seals. Do I have a pump problem or what can we look at.
asked by: Stacy J
Expert Reply:
It does appear to be a pressure issue. This sounds like it may have something to do with the electric boost coming from the tow vehicle as well.
For disc brakes the master cylinder should have a 1,600 psi rating compared to the 1,200 psi or 1,000 psi rating for drum brakes. It sounds like the pressure coming from the unit is too high when the boost is set to 2.5 which seems low, so it does sound like the actuator isn't functioning correctly since you are having issues with two different vehicles.
Since you are blowing seals consistently losing time and money, I recommend using the HydraStar Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi # HBA16 which is our most popular unit for disc brakes due to its ability to work with many brake controllers including factory integrated controllers on newer vehicles. We have had very few customers not be extremely satisfied with the function of this actuator.
I recommend using a multimeter like # ALL648349 to check your vehicle side trailer brake controller output voltage. I've attached an article to help with troubleshooting. If everything on the vehicle side checks out the actuator is the issue.
Products Referenced in This Question
Hydrastar Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi
- Brake Actuator
- Electric-Hydraulic Brake Actuator
- 1600 psi
- Disc Brakes
- Hydrastar
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 >
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