Brake Actuator

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Hydrastar

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Electric-Hydraulic Brake Actuator

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Drum Brakes

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1000 psi

HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi

HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi

Item # HBA-10

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Brake Actuator

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HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi 1000 psi HBA-10
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Anodized aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic drum brakes. Vented end plate releases heat. Includes hardware. Hydraulic lines and breakaway sold separately. Call 800-298-8924 to order Hydrastar brake actuator part number HBA-10 or order online at etrailer.com. Free expert support on all Hydrastar products. Guaranteed Lowest Price and Fastest Shipping for HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi. Brake Actuator reviews from real customers.
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  • Reviews (10)
  • Q & A (110)
  • Videos (1)
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Hydrastar Brake Actuator - HBA-10

  • Electric-Hydraulic Brake Actuator
  • Drum Brakes
  • Hydrastar
  • 1000 psi

Anodized aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic drum brakes. Vented end plate releases heat. Includes hardware. Hydraulic lines and breakaway sold separately.


Features:

  • Electric-over-hydraulic brake actuator activates your trailer's hydraulic brakes when you apply the brakes in your tow vehicle
    • Brake controller (sold separately) is required to send signal from tow vehicle to actuator when brakes are applied
    • 7-Way trailer connector (sold separately) is needed to transmit signal from brake controller
  • Improved functionality when compared with surge brake couplers
    • Faster response time - trailer brakes are triggered when you apply brakes in tow vehicle, as opposed to when trailer pushes against hitch ball
    • No need to manually lock out brakes when you back up
    • Trailer brakes can be intentionally activated when you reverse
    • Manual override on brake controller can be activated so you can engage the trailer brakes without having to apply your vehicle brakes
  • Vented end plate releases pressure, moisture, and heat in order to protect the internal components
    • Allows actuator to be mounted in places where most actuators would overheat
  • Electronic, proportional pressure valve ensures that braking is smooth and effective
  • Built-in bleeder screw lets you easily flush air out of the brake lines
  • Durable extruded aluminum provides corrosion resistance
  • Compatible with any standard, 5-amp-hour-battery breakaway kit (sold separately)
  • DOT compliant
  • Unit installs on trailer frame and connects to trailer's wiring and hydraulic brake lines (sold separately)
  • Made in the USA


Specs:

  • Application: single- and tandem-axle trailers (up to 7,000 lbs) with drum brakes
  • Maximum output pressure: 1,000 psi
  • Power: 12V DC
  • Hydraulic port size: 3/16"
  • Dimensions: 11-3/4" long x 3" wide x 7-3/8" tall
  • Wire configuration:
    • Black: 12-volt power
    • Blue: brake controller
    • Yellow: breakaway
    • White: ground
  • 2-Year limited warranty


Note: Do not power wash the HydraStar actuator or take it through a commercial car wash. High-pressure water may damage the seals on the actuator.


The HydraStar electric-over-hydraulic trailer brake actuator applies pressure to your trailer's hydraulic brake system in response to the electrical signals sent from your in-cab brake controller. As a result, your trailer's hydraulic brakes will be activated every time you apply the brakes in your vehicle or press the manual override on your controller. This setup is ideal for boat trailers because you will get responsive hydraulic braking, which you control conveniently from inside your vehicle with your electric brake controller.


HydraStar Electric-Over-Hydraulic Actuator vs. Standard Surge Brake Actuators

With the HydraStar electric-over-hydraulic actuator, you can get all the benefits of towing with an electric brake controller while using hydraulic brakes. Because this actuator will activate according to the settings you have chosen for your brake controller (sold separately), you will have more control over when and how your trailer brakes engage. Depending on the features of your brake controller, you may be able to control both the rate and intensity with which your trailer's brakes activate. You can also use the manual override on your brake controller, which allows you to engage the trailer brakes without having to apply the brakes in your vehicle. And perhaps most impressive, if you have a proportional brake controller, your brakes will be activated with an intensity that matches the braking speed and power of your rig.


This pump-and-motor-based system increases response time compared with traditional actuators because the trailer brakes are triggered when you apply the brakes in the tow vehicle, as opposed to when the trailer pushes against the hitch ball. This not only gives you faster, more efficient braking, but it also eliminates the pushing sensation that occurs in setups that use standard surge brake actuators.


HydraStar actuators are also beneficial because, unlike standard surge couplers, they allow you to activate your brakes when reversing down an incline, such as a boat ramp. Having the ability to brake in reverse gives you more control and prevents wear on your tow vehicle.


HydraStar Installation

Hydrastar Installation Diagram

This HydraStar electric-over-hydraulic brake actuator will give you years of trailer-stopping performance. The actuator mounts on your trailer's frame with the included hardware. Then it splices into the trailer's wiring and connects to your hydraulic brake lines from the 3/16" female port. Lines and fittings are sold separately.


Durable Construction

Just like other HydraStar electric-over-hydraulic actuator models, this system is built of extruded anodized aluminum for excellent corrosion resistance. In addition, the weathertight seals protect internal components from the elements.


This actuator also has a vented end plate that releases pressure, moisture, and heat to help prevent any internal damage. Unlike models that are unable to release heat and pressure, this vented actuator can be safely mounted inside of a compartment on your trailer. As a result, this actuator is great for gooseneck and fifth-wheel trailers where finding space on the tongue can be nearly impossible.


Brake Controller Compatibility

Not all electric trailer brake controllers will work with this electric-over-hydraulic brake actuator. See the following table to determine compatibility with common models of brake controllers. For best performance, it is recommended that you use an aftermarket electric brake controller rather than an OEM factory-installed controller.


ManufacturerVehicle Years/Controller ModelsCompatibleCompatible if Used with HBA-CAM
VehiclesFord2005-2006Yes
2007-2008NoYes
2009-2015Yes
Dodge2010-2015Yes
GMC/Chevy2007-2015NoYes
Brake ControllersDraw-TiteActivator (5100)Yes
Activator II (5500 or 5510)Yes
Activator III (5520)Yes
Activator IV (5504)Yes
HayesEnergize III (81741B)Yes
Energize III+ (HA81742B)Yes
Energize XPC (HA81745)Yes
Engage (HA81760)Yes
G2 Brake Boss (81792BB)Yes
Syncronizer (HA81725)Yes
Endeavor (81770)Yes
Genesis (HA81790)Yes
Blackbird (HA81726)Yes
HopkinsImpulse Digital (47325)Yes
Insight (HM47297)Yes
Brake Force (47225)No
Reliance (47284)No
Agility (47294 or 47295)No
MaxbrakeBrake ControllerYes
RedlineRedline TA900Yes
RedlineTA900ANo
RedlineTA1000No
RedlineTA1100No
RedlineTA1200No
TekonshaProdigy (90185)Yes
Prodigy P2 (90885)Yes
Prodigy P3 (90195)Yes
Primus IQ (TK90160)No
PowerTrac (39523)Yes
Voyager (39510 or 9030)Yes
ValleyVA32812 BlackbirdYes
VA32811 PhantomYes


HBA-10 Cargo Towing Solutions (formerly Carlisle) Hydra Star Electric-Over-Hydraulic (EOH) Brake Actuator

Replaces HydraStar HSV381-7065



HBA-10 Installation InstructionsInstallation Details HBA-10 Installation instructions



Video of HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Hydrastar Brake Actuator - Electric-Hydraulic Brake Actuator - HBA-10 Review

Today we're going to take a look at the Hydrastar Electric Over Hydraulic Actuator for drum brakes. It has 1,000 PSI rating. This Hydrastar Electric Over Hydraulic Actuator offers a fast response time for shorter stopping distances. In emergency situations and in your regular everyday towing, you can control those fractions of a second. Doesn't matter when it comes to stopping your trailer. This has a 1000 PSI pressure rating which is suitable for drum break applications.

It will work on single, tandem, and triple axle trailers with drum brakes. This actuator will eliminate the feel of being pushed by the trailer. It eliminates any problems found when backing a trailer uphill with surge brakes and eliminates brake drag which is common with surge brakes on a downhill grade. As you can see, this actuator is in a nice sealed extruded anodized aluminum housing. It's designed to mount to the trailer, connects into the trailers wiring and the hydraulic brake light. This does require the use of an in-cab brake controller.

It will work with most electronic brake controllers that have the electric over hydraulic brake function. This also does require break away kit. We do sell those separately on our website. It's part number HS496-82 and we do list it on this product page as a related product. This uses 12-volt VC operation.

It has solid state electronics. When you fill it up with brake fluid it will use either .3 or .4 brake fluid. These Hyrastar actuators are easy to install. They meet all DOT and federal braking requirements, unlike some of your surge brakes which are illegal in many states. If you notice, it has the four wires that you have to hook up. These will all install.

These are twelve gauge wires. The black wire, we'll start with that one, that's designed to connect to the 12-volt constant power for your tow vehicle. The blue wire. This is the connected to the output from your in-cab brake controller. The white wire is the ground. It connects to your tow vehicle ground and the last one, the yellow wire, connects to the cold side of your break away switch, not the battery side. It comes with this nice set of our owner's manual. It tells you how to install it and even describes its features. Just to show you the top here. It has the cap where you put in your brake fluid. It has the bleeder valve so if you get any air in your system, you can bleed it out of here. Right here, is your output port that'll connect to your hydraulic brake lines. I do want to give you a few dimensions on this just to let you know how big it is. We'll measure the height from the bottom to the top of the cap. If we put a ruler on it, it's going to be right at seven and one quarter inches high. The length, we're going to measure from the edge of the mounting bracket to the other edge. Total overall length and that's going to be right at eleven and three quarter inches. Then the width on this, at the widest point is going to be right at three inches wide. That should do it for the review on the Hydrastar Electric Over Hydraulic Actuator for drum brakes with the 1,000 PSI rating.


Customer Reviews

HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,000 psi - HBA-10

Average Customer Rating:  4.4 out of 5 stars   (10 Customer Reviews)

Anodized aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic drum brakes. Vented end plate releases heat. Includes hardware. Hydraulic lines and breakaway sold separately.

- HBA-10
by:

awesome product, I have installed 4 more for customers,, works great, very easy to install and do away with surge brakes,, its a 5 out of 5 ,,, ill be buying more 452113



- HBA-10
by:

I just got it put on the trailer so really haven't had a chance to try it . The part went on the 3 horse living quarters trailer which I hope to pull later today. The brakes activated properly, bleeding process was certainly a two man operation and took quite a bit of time. 297163



- HBA-10
by:

Work Great Fast Shipping 80131


Comments

Have Hydrastar HBA12 1200psiG7 on tandem boat trailer. Breakaway activates brakes well but brakes activated thru vehicle do not work.A check of power from vehicle to trailer indicates circuits are all good. Can hear contact noise from inside brake unit but pump doesnt start but thru breakaway activation the pump works well.Have been told the fault is in the Electronic Chip that activates the pump. Is this correct and if so can I purchase that part only? What part number do I order? Appreciate your reply. John B

-- comment by: John B - 10/23/2013

2226

What brake controller do you have installed in the vehicle? Not all brake controllers will properly operate an electric over hydraulic actuator pump. Some require a different mode or setting to accomplish such. It also may be good to make sure the system is wired properly. Check out the wiring diagram towards the bottom of the page on the HBA-16 actuator.

-- Patrick B - 10/29/2013


- HBA-10
by:

I have a tandem axle dump trailer that came with factory hydraulic surge brakes. They worked sporatically at best, were very unpredictable, and eventually stopped working all together. I installed the hba 10 as well as an electric breakaway switch and eliminated the surge hitch all together. Works great. Far beyond my expectations. 476094



- HBA-10
by:

Very good product, it works well with my trailer. Much better than electric drum brakes. Only down fall is I found it is sensitive to voltage spikes. I had a faulty alternator and the control board in the unit burnt out. Somewhat disappointed that replacement parts were not available to repair my current unit. Had to replace that whole unit just for a small circuit board. Great unit otherwise as far as function. 668739



- HBA-10
by:

Night and day difference from the useless surge brakes on my boat trailer. 666843



- HBA-10
by:

THE PRODUCT I NEEDED AT A GREAT PRICE WITH A FAST DELIVERY 606938



- HBA-10
by:

Service was exceptional as for the product is what is, replaced the same that was in service for 6 years, should have lasted a lot longer 579344



- HBA-10
by:

Still working as it should, no problems with the actuator. Completely satisfied! If only the rest of my braking system were as trouble free! 495130


Comments

I am happy with the actuator and how well it is working

James - 04/12/2019

52826

- HBA-10
by:

The product was exactly as picture, etrailer did an outstanding job expediting this order, got the product the next day . 304258


10
10

Ask the Experts about this Hydrastar Brake Actuator

Do you have a question about this Brake Actuator?


  • Comparing the HydraStar Hydraulic Actuator and the Titan BrakeRite Hydraulic Actuator
  • It looks like you have certainly done your research in regards to the HydraStar Electric Over Hydraulic Actuator and the Titan BrakeRite EHB Electric-Hydraulic Actuator. Unfortunately, we do not exactly do extensive testing on either actuator therefore our knowledge comes from the manufacture and the reviews our customers submit on them. In regards to the Titan BrakeRite EHB Electric-Hydraulic Actuator you only have two options which is part # T4822500 (1,000 psi) if you have drum brakes...
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  • Process to Convert Trailer from Air-Over-Hydraulic Brakes to Electric-Over-Hydraulic Brakes
  • If the brakes assemblies and hubs/drums on the subject trailers are actually 16-inches in diameter we have no compatible brakes. The largest electric and hydraulic drum brakes we have are 12-1/4 x 5, such as the left/right electric brake set # AKEBRK-12 which is rated for a 12K axle and the left/right hydraulic set # 23-408-409 also rated for 12K axles. We do have electric-over-hydraulic (EOH) actuators like the HydraStar Drum Brake Actuator # HBA-10 and the others shown on the linked...
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  • Could Trailer with Electric Over Hydraulic Brakes Have Trailer with Electric Brakes Connected
  • So your electric over hydraulic brake actuator is receiving a standard brake controller output signal to tell it how to operate your EOH trailer brakes. So it would be possible that you could take this circuit (most likely blue wire) and extend it from where it connects to the actuator to the back of the first trailer so that you could then connect it to the electric brakes of your second trailer. You'd need 10 gauge wire like part # 10-1-1 (sold by foot) to get the circuit to the trailer...
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  • Recommended Universal Fit No Splice Wiring Harness For Trailer Connector
  • For your application, to add electric trailer brakes to your system without needing to splice into any factory wires, you could use the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit, # 119250KIT. These Zero-contact interface senors idetify the current flowing through each wire by simply clamping around it. It has a circuit protecting module to protect your vehicle wiring and connects directly to the battery for power. This harness...
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  • Troubleshooting Back and Forth Braking While Towing a Boat Trailer with Surge Actuator
  • Yes we have heard of that before. Since a hydraulic actuator activates your trailer brakes by compression when you are going downhill the weight of the trailer is already putting pressure on that compression. Then when you hit a bump it is jolting your 2004 Chevy Avalanche and trailer enough that the actuator is activated and causes the brakes on your trailer to lock up. The only way to keep this from happening is to keep the actuating coupler on your trailer "stretched out". This means...
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  • Replacement 4 Wire HBA-CAM for Older Carlisle Hydraulic Trailer Brake Actuator
  • It sounds like you have an older generation of the Carlisle Hydrastar brake actuatuator. The current # HBA-CAM would only be compatible with 6th generation and newer actuators. It wouldn't be a compatible replacement for your 381-7061. The current 4 wire version is part 381-7063, but we do not offer it. If you were to use an aftermarket brake controller that's compatible with electric over hydraulic braking systems like the Tekonsha Prodigy P2 # 90885, you wouldn't need the # HBA-CAM...
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  • Are Electric Over Hydraulic Trailer Brake Actuators Compatible with Factory Brake Controllers
  • It all depends on which electric over hydraulic actuator you are using. If your truck has an integrated brake controller it might be compatible. But you mentioned having a 2009 2500HD but I do not know if it is a Silverado, Sierra, or Ram. If we are talking factory integrated controllers then GM trucks are not compatible with the HydraStar # HBA16, # HBA-12, or # HBA-10 unless you use adapter # HBA-CAM (which only works with the model HydraStars indicated on its product page). It...
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  • Trailer Brake Controller that is Compatible with Electric Over Hydraulic Braking Systems
  • There are only certain brake controllers that are compatible with electric over hydraulic braking systems. The Draw-Tite controller is not one of them but we do have several options that are electric over hydraulic compatible. Using one of them you could use any actuator you wanted. I know converting to electric over hydraulic brakes can be expensive so to save some money the most affordable controller that is compatible is the Hayes Engage, # HA81760. This is a time-delayed controller...
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  • How to Convert a Trailer with Surge Brakes to Electric Over Hydraulic Brakes
  • You can convert surge brakes to an electric over hydraulic braking system. To do this, you will need an electric over hydraulic actuator and a brake controller. For an electric over hydraulic actuator, I recommend looking at the Carlisle HydraStar units. If your trailer has drum brakes, you will want part # HBA-10. If your trailer has disc brakes, then you will want part # HBA16. I have also attached a link to all of our electric over hydraulic actuators for you to check out your options. The...
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  • Can Air Over Hydraulic Trailer Brakes be Converted to Electric Over Hydraulic on Military Trailer
  • Since the braking power is still hydraulic, you should have no issues converting from a vacuum over hydraulic system to an electric over hydraulic system. The electric over hydraulic actuator will take the place of the vacuum that pressurized the existing brakes. If your trailer has disc brakes, the # HBA16 actuator that you referenced is a great choice. If your trailer has drum brakes, you will want the Hydrastar Electric Over Hydraulic Actuator for Drum Brakes # HBA-10. Often,...
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  • Carlisle Hydrastar Electric Over Hydraulic Trailer Brake Actuator Runs But Does Not Build Pressure
  • The following are the troubleshooting tips from Carlisle: If the Brakes are slow to respond: Re-bleed the trailer brakes and atuator. If the trailer is equipped with drum brakes, re-adjust the drum brakes to the trailer manufacturer's recommended running clearance. Slow response can be caused by trailer wiring that is too small. Slow response can be caused by brake lines that are too restrictive on the trailer (small diameter/long length restrictive fittings/routing restriction) If...
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  • Converting Military Trailer W/ Air Assist Hydraulic Drum Brakes to an Electric Over Hydraulic System
  • From a price, performance and reliability standpoint, I would recommend the Carlisle HydraStar Electric Over Hydraulic Actuator for drum brakes, part # HBA-10. You would also need a breakaway kit like the # 50-85-313 offered by Tekonsha as well as an in-cab brake controller that is electric over hydraulic compatible, like the Tekonsha Prodigy P2, part # 90885 or the P3, part # 90195. Both controllers are electric over hydraulic compatible, but the P3 is a bit more user-friendly for those...
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  • Brake Controller Recommendation for a Truck with Air Brakes and a Trailer with Electric Brakes
  • The trailer brakes work on a separate circuit than the lights. You have a couple of options to control the electric brakes on the trailer. One option is to use an air over electric brake control, # 1300-80. This unit connects to the air brakes on the truck and when the brakes are applied it sends an electric signal back to the trailer brakes. The other option, and what I would do, is to use an electric brake controller like # 90885. For either of these controllers, the red wire attaches...
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  • Is the Prodigy P3 Brake Controller Compatible with the HydraStar Electric Over Hydraulic Actuator
  • The Tekonsha Prodigy P3 # 90195 is actually one of the best options to use with an EOH setup. You should not have any problems using it with the HydraStar Electric Over Hydraulic Actuator # HBA-10 when it is set to EOH mode. Since you tested it with another vehicle and your trailer brakes worked just fine it leads me to believe that the wiring on your 2012 Silverado is messed up somewhere. What you will want to do is use a Circuit Tester # 40376 and test the pin in the 5 O'clock position...
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  • Converting Military Trailer Air Over Hydraulic Drum Brakes to Electric Over Hydraulic
  • You are correct, there are 4 electric over hydraulic braking systems, from 3 manufacturers, that can be used to eliminate the air over hydraulic actuator on your M200A1 trailer. These systems all require a breakaway system to meet DOT safety standards. I will detail each system for you so you can select the one that will work best for your truck and trailer setup. First, the Dexter Electric Over Hydraulic Brake Actuator, # K71-650, would be a good choice because it will work with the...
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  • Troubleshooting EOH Horse Trailer Brakes That Stay Engaged When Brake Pedal is Released
  • Since you have replaced your brake assemblies and flexible brake lines, and have bled the system, the sticking brakes on your horse trailer are most likely caused by the electric-over-hydraulic actuator itself or its main steel brake line. It is possible that the actuator is damaged and is not allowing the brake pressure to back off when you stop pressing the pedal. It is also possible that there could be a bit of foreign material in the main steel brake line (rust is most likely) that...
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  • Replacement Cap Recommendation for a Hydrastar Electric Over Hydraulic Actuator
  • Yes we do. For the cap for the # HBA-10 you would need the part # HBA-BC.
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  • Troubleshooting Factory Brake Controller in 2015 GMC Sierra 2500HD
  • Some factory trailer brake controllers are not compatible with trailers that use an electric-over-hydraulic actuator such as # HBA-10. Aftermarket controllers like the excellent Tekonsha Prodigy P3 # 90195 include a setting to allow for proper operation with this type of set-up, or with standard electric drum brakes. In your 2015 Sierra 2500 the P3 can be installed simply, using the custom wiring adapter # 3016 that plugs in under the dash. If you do not have an EOH actuator, but instead...
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  • Troubleshooting HydraStar Actuator HBA-10 Not Working with 2012 Ford F-150, Factory Brake Controller
  • I confirmed the compatibility of your 2012 Ford F-150 with integrated controller and the HydraStar EOH Acutator for Drum Brakes # HBA-10 with my technical contact at HydraStar. You will not need the # HBA-CAM or an aftermarket controller to use this system with your truck. You mentioned that you tested the brake controller signal on the truck's connector, but you will want to ensure that a 12V signal is reaching the # HBA-10 when you step on the truck's brake pedal. This can be done...
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  • Wiring Diagrams for 7-way Round and 7-Way Blade Connectors
  • I attached two pictures for you two check out. One shows how a 7-way blade is traditionally wired and one that shows how a 7-way round is traditionally wired.
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  • Troubleshooting HydraStar Actuator Not Releasing Pressure
  • I spoke with my contact at HydraStar regarding the issue you're having with the EOH Actuator like # HBA-10 and he has not really heard of this happening before. What he recommends doing is bleeding the trailer brakes to ensure there isn't anything stuck in the system that is causing the pressure build-up. To do this you will remove the key from the breakaway switch to start the unit and starting with the brake furthest from the actuator open the bleeder screw and keep it open until...
    view full answer...

  • Wiring Diagrams for Hydrastar Electric Over Hydraulic Trailer Brake Actuators
  • If it is a 1000 psi then it would be the Hydrastar for drum brakes. The newest one is # HBA-10 and it has different wire colors, see picture. So you know that black is 12 volt power in and white is the ground. Blue/white goes to the break away switch. So that leaves red and green. One of those two has to be input to the Hydrastar from an in-cab brake controller. The other, I am not sure of the function since the wiring for HBA-10 only shows 4 wire connections. It might be similar...
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  • Can Vacuum Over Hydraulic Brakes be Converted to Electric Over Hydraulic Brakes
  • Since the braking power is still hydraulic, you should have no issues converting from a vacuum over hydraulic system to an electric over hydraulic system. The electric over hydraulic actuator will take the place of the vacuum that pressurized the existing brakes. If your trailer has disc brakes, the # HBA16 actuator that you referenced is a great choice. If your trailer has drum brakes, you will want the Hydrastar Electric Over Hydraulic Actuator for Drum Brakes # HBA-10. Often,...
    view full answer...

  • Testing the Hydrastar 1600 PSI Electric/Hydraulic Actuator for Proper Function
  • I spoke to the manufacturer and he said that assuming the unit is getting a full 12 volts, the best thing to do would be to bench test it. A 12V power source will be needed to do so. Isolate the wires of the Hydrastar (black, blue, white, yellow) 1. Attach black wire to the positive terminal and white wire to negative terminal of the 12v battery. Nothing should happen 2. Attach black and blue wire to the positive terminal and white wire to the negative terminal of the 12v battery....
    view full answer...

  • Surge Brake Actuator Recommendation to Convert Trailer From Air Over Hydraulic Brakes
  • Yes you can, all you need is a surge actuator that is compatible with drum brakes and you would be good to go. For one that has a lunette ring on it you would want the part Titan Zinc-Plated Brake Actuator # T4093200. This has an 8k capacity.
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  • Trailer Brake Magnets Hum But Brakes Do Not Work
  • It sounds like you are using a brake controller for the electric brakes on the trailer. There are several things that you can check to determine where the problem is. In the truck cab you will need to sever the blue brake output wire several inches from the back of the controller. Then use a circuit tester such as # 40376 to test the end of the blue wire coming out of the controller. It should only have power when you apply the manual override (or brake pedal on some controllers). If...
    view full answer...

  • Converting Military M105A2 Trailer From Air Over Hydraulic Brakes to Electric Over Hydraulic Brakes
  • You should just need an electric over hydraulic actuator such as # HBA-10 for drum brakes or # HBA16 for disc brakes. You should not need any additional brake lines or anything because the actuators work with the hydraulic lines and brakes that are already on the trailer. The tow vehicle will need to have a brake controller that is compatible with electric over hydraulic brakes, such as the P2, # 90885, and both the vehicle and the trailer will need to be equipped with matching trailer...
    view full answer...

  • Carlisle Hydrastar Electric Over Hydraulic Trailer Brake Actuator Does Not Cycle On/Build Pressure
  • Your Hydrastar actuator is not cycling on to build pressure to apply the brakes when needed. This could mean that there is an electrical problem or a malfunction with the motor, or even a problem with the brake controller You have stated that there is confirmed 12 volt power going to the unit but it could still be an electrical problem. You can also make sure that the Hydrastar white ground wire is connected to the vehicle ground and not to the trailer. They are very particular about...
    view full answer...


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    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

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    Need to return an item? No problem. Please read our Returns Policy for more information.

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