Do Hydrastar Electric Over Hydraulic Actuators Run All the Time When Brakes Are Applied

Question

Question:

Hi I have a Carlisle 1200PSI electric over hydraulic system controlled be Prodigy Plus 2 controller programmed for elec over hyd. The hydraulic pump runs continuously when brake pedal is pressed even when stopped in traffic with foot on brake pedal. I would have thought the pump should stop/cut out when full pressure reached maybe after a few seconds time delay. Thx

asked by: Ross H

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Expert Reply:

What you are describing is normal behavior from your Carlisle Hydrastar brake actuator # HBA-12. It's going to run when you have the brakes applied. Without trying to be super confusing basically if the brakes are applied the actuator has to be running to create pressure. It doesn't have a way to create pressure and then hold that pressure without the pump runnig. Also this helps too as if the braking pressure were to suddenly change it would need to be dynamic enough to quickly change.

expert reply by: Jameson C

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Answer 1

Hey Richard, this is a great question but you do not need a diode on the black wire that runs to your Hydrastar actuator part #HBA16. The black wire is not what activates or primes the actuator as it's the blue wire that does that and that is…

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Answer 2

The integrated brake controller of a 2012 Ford F-350 is SUPPOSED to be compatible with electric over hydraulic brake actuators on trailers but what we've found is that a lot of integrated truck brake controllers just don't work consistently…

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Answer 3

Hey Daniel, yes the Hydrastar actuator part #HS381-8067 that you referenced would run continuously once the pin of the breakaway has been pulled. This is why a battery is part of the breakaway system as it needs that to power the system. Also, yes…

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Answer 4

Hi Victor! The Hydrastar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K #HSE7K-T1 uses the Hydrastar Electric Over Hydraulic Actuator #HBA16 and used DOT 3 or DOT 4 brake fluid. I have the full manual…

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Answer 5

It's possible. Here's Cargo Towing Solutions troubleshooting procedure for if the actuator won't run, or runs continuously: Verify that the trailer and tow vehicle are wired according to the electrical schematic shown below. Perform the…

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Answer 6

It sounds like you are comparing the Hydrastar Vented Marine Electric Over Hydraulic Actuator #HS381-8067 and the Hydrastar Electric Over Hydraulic Actuator #HBA16. The Marine #HS381-8067 features stainless steel hardware, a vented end plate, and a…

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Answer 7

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 8

The instructions may vary depending on the brand of the electric-over-hydraulic (EOH) actuator but for the HydraStar actuators, like part #HS381-8067 that you referenced, it basically boils down to using the bleeder screw and the brake controller on…

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Answer 9

Hey Daniel, the Hydrastar actuator part #HS381-8067 that you referenced is not powered by the breakaway battery under normal use. It draws power for that from the tow vehicle battery. The breakaway battery is only ever used if the pin of the switch…

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Answer 10

Hey Alan! You can use the Grease Seal #RG06-050 (pair) or #58846 (single) on your Keystone Hideout. These share the same dimensions as the 171255TBG and 171255TB. The TB means low pressure and the G is just an extra letter related to the…

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Answer 11

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 12

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Do Hydrastar Electric Over Hydraulic Actuators Run All the Time When Brakes Are Applied

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