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Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 6,000 lbs

Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 6,000 lbs

Item # DM8605101

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Brake Actuator

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Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 6,000 lbs Disc Brakes DM8605101
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  • Surge Brake Actuator
  • Disc Brakes
  • 2 Inch Ball Coupler
  • 6000 lbs GTW
  • Demco
  • Bolt-On
  • Electric Lockout
  • Straight Tongue Coupler
Surge actuator has a corrosion-resistant composite master cylinder and zinc plating, making it perfect for marine use. Leverlock coupler latch is easy to use. Electric lockout activates automatically to keep brakes from actuating when in reverse. Call 800-298-8924 to order Demco brake actuator part number DM8605101 or order online at etrailer.com. Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 6,000 lbs. Brake Actuator reviews from real customers.


  • All Info
  • Reviews (6)
  • Q & A (13)
  • Videos (2)
  • Photos
  • Why etrailer?

Demco Brake Actuator - DM8605101

Surge actuator has a corrosion-resistant composite master cylinder and zinc plating, making it perfect for marine use. Leverlock coupler latch is easy to use. Electric lockout activates automatically to keep brakes from actuating when in reverse.


Features:

  • Hydraulic actuator activates trailer's brakes when tow vehicle slows or stops
  • Electric reverse lockout lets you back up without actuating trailer brakes
    • Solenoid activates automatically when you shift into reverse
  • Leverlock coupler mechanism for simple, secure hookup and disconnect
    • Trigger-style latch is easy to use
  • Zinc plating offers excellent corrosion resistance
    • 500-Hour salt spray rating - great for marine applications
  • Composite master cylinder is durable and efficient
    • Glass-reinforced nylon construction resists rust and corrosion
    • Large reservoir provides increased capacity for brake fluid
    • Automotive-style diaphragm cap creates completely enclosed system to help prevent contamination of fluid
  • Large rear rollers allow for easy movement and smooth operation
  • Breakaway included
    • Snap hook on safety cable ensures secure connection to breakaway lever
  • Heavy-duty steel construction with sturdy, reinforced outer casing
  • Bolt-on installation
    • Requires 1/2" x 4-1/2" Grade-5 bolts (not included) for mounting
  • Made in the USA


Specs:

  • Application: trailers with hydraulic disc brakes
  • Ball size: 2"
  • Gross towing weight: 6,000 lbs
  • Maximum tongue weight: 600 lbs
  • Mounting: straight, 3" wide trailer tongue
    • Bolt holes are 3" apart on center
  • Model number: DA66B
  • 1-Year warranty


When you apply the brakes in your tow vehicle, deceleration occurs and momentum pushes your trailer toward the rear of your vehicle. With surge brake systems, the hydraulic actuator is triggered as your trailer moves forward, once your tow vehicle starts to slow down. When this happens, the actuator contracts, applying force to its master cylinder. This in turn supplies the necessary hydraulic pressure to engage your trailer's brakes.


Electric Reverse Lockout

The electric reverse lockout on this trailer brake actuator is automatically activated when you shift your tow vehicle into reverse. The solenoid wires into your trailer connector - which connects to your tow vehicle - so that it can detect when you are in reverse. When your vehicle is in reverse, the solenoid ensures that the hydraulic actuator does not activate your trailer's brakes, thus allowing you to back up your rig. To use the lockout feature, you must have a 5-pole flat, 6-way round, or 7-pole trailer connector.


Sturdy, Corrosion-Resistant Construction

Made of sturdy steel, this hydraulic trailer brake actuator features a durable zinc coating that is designed to limit rust and corrosion. This zinc coat has a 500-hour salt spray rating, making the actuator perfect for marine use. In addition, the composite master cylinder is made of corrosion-resistant glass-reinforced nylon to further ensure durability for marine applications.



8605101 Demco DA66B Hydraulic Trailer Brake Actuator for Disc Brakes - Electric Lock-Out - 2" Ball Coupler - 6,000 lbs



DM8605101 Installation InstructionsInstallation Details DM8605101 Installation instructions


Video of Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 6,000 lbs


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




Video Transcript for Demco Brake Actuator - Surge Brake Actuator - DM8605101 Review

Today we're going to review part number 8605101. This is the Demco Surge Brake for Disc Brakes. This is a bolt-on installation and see the mounting holes. There's two on this side and there's two on the other side, and this would apply our install onto a 3-inch wide straight tongue trailer. A 3-inch wide is the inside measurement right here. The mounting holes, they have a measurement from center to center of 3 inches.

Now, it does require the use of two 1/2-inch by 4-1/2-inch grade 5 bolts. They would go through here and bolt on to the other side through the trailer tongue. Now, this also fits the 2-inch hitch ball. It does have the electric solenoid on the back for the reverse lockout feature. This actuator does have a 6000-pound maximum weight capacity and a 600 pound maximum tongue weight capacity.

This actuator is also zinc plated for marine application use. Now, the way a surge brake actuator would work is this is attached to the hitch on or the hitch ball on your tow vehicle. So when the tow vehicle is applying the brakes and slowing down, the weight of your trailer will be pushing this actuator forward. You can actually see the bolt, the elongated holes right here, would actually move it towards the vehicle. What would happen is there's an actuator right down here that you can see and that would actually telescope.

When it does that it will actually push on the push rod of the master cylinder which would in turn apply the hydraulic pressure to the trailer brakes. So basically, when this is hitched to your tow vehicle and you're stopping this would compress forward. Have the actuator move the master cylinder. The brakes would be applied and your trailer would stop. Now, this reverse lockout feature right here, this is used when you're going to be backing up.

So if you're in a situation where you need to back up with the trailer connected, you did not want the brakes to be applied when backing up. What you'll do is your trailer brake line would actually connect into the solenoid. There's a little red cap here that you would take out and the line would connect into there, and then there are two wires. One would be grounded. The other one would connect to the reverse light wire on your tow vehicle. So basically, what that does is then when you put your vehicle in reverse that would send a charge to the solenoid which would then block off the pressure from the master cylinder to the trailer brakes. That way, the brakes would not be applied and you'd be able to easily back up. Now, a few features on this. The master cylinder cap right here at the top that we can unscrew has a nice automotive style rubber diaphragm on it that helps keep the system completely enclosed. Another little thing they did is right here where you put your brake fluid into your master cylinder. They actually have a raised fill plate. Turn it a little bit. Maybe you can see it better. It's actually raised and one nice little feature about that is, usually, on a coupler is if you took your cap off, that would be flushed and even with this which are topping your coupler. Well, if there's dirt or grime on there it could fall into your master cylinder which you dont want that to happen. They've actually raised this a little bit, so when you take your cap off the dirt would not fall into the master cylinder. Now, it also has on the master cylinder itself, there is a you can't see. That's underneath here, but there's an actual rubber bellow boot that is on the push rod of the master cylinder. Again, that will help keep any moisture or dirt from getting inside the master cylinder and damage it. Now, the master cylinder that's underneath here is actually made of a long-glass reinforced nylon and that's a composite material. They do that because of strength and it also eliminates the rust and corrosion factor, so you dont have to worry about that. It could last quite a long time. Also, the cylinder itself is built larger so it has a 20% more capacity and that will ensure adequate brake fluid supply. Basically, when you attach this to your 2-inch hitch ball you'll just pull up on this trigger. Unlatch it. Drop it on to the hitch ball. Once it's on the hitch ball, push it close and the trigger latch will lock into place. Then to further protect to give you security is these holes line up. You can actually run a coupler lock right through here and prevent anybody from taking it off of your hitch ball. Now, this other nice feature here is on top that's actually a safety feature and it is required to be used. It is an emergency breakaway lever. What you would do is this hook with the keeper right here. You see. You would attach that to the tow vehicle itself. What that does is by chances if your trailer ever comes detached from your tow vehicle if it unhitches here at the trailer ball and go and falls away. You would pull this cable and this cable would break away and pull this lever forward. What that would do is that would actuate the master cylinder to send pressure to the trailer brakes immediately, so it would lock up the brakes right away to keep your trailer from a runaway situation. So it is a safety feature but then it's required to be used. That should do it on the review of part number 8605101, and that's the Demco Surge Brake Actuator for Disc Brakes.


Customer Reviews

Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 6,000 lbs - DM8605101

Average Customer Rating:  4.7 out of 5 stars   (6 Customer Reviews)

Surge actuator has a corrosion-resistant composite master cylinder and zinc plating, making it perfect for marine use. Leverlock coupler latch is easy to use. Electric lockout activates automatically to keep brakes from actuating when in reverse.

- DM8605101

by:


Good price , quality and fast delivery , will buy things from etrailer again 590971



- DM8605101

by:


Delivered as advertised. Installed with no trouble. After installing and connecting brake line, it is necessary to bleed the system by pumping the coupler/brake master cylinder in and out, while someone else opens and closes the bleed valves on each brake. It is very advisable to disconnect the shock absorber for this purpose, as the job of pumping the coupler in and out is hard enough without it. We used a 5' 2x6 for that purpose, anchoring the bottom end with the safety chains. Instructions for doing this would have been helpful, but none were enclosed. Also, the unit, though well made and well plated, came without the 2 high grade 1/2" bolts and locknuts needed. We feel the bolts ought to be included. Service and follow-up by E-Trailer is excellent. We have not yet towed the trailer with the unit installed. 131543



- DM8605101

by:


I recently purchased a used boat and trailer. Trailer had a surge brake hitch that had not been maintained and had been discontinued. I replaced that non-operational unit with this one. Installation was easy, my only other expense was the need to replace the two attachment bolts with longer ones. I also replaced the fiber nuts and washers. This unit has a much better ball lock up mechanism than my old hitch. A great new hitch at a great price, thank you etrailer. 595162



- DM8605101

by:


Dear eTrailer, I purchased an electric over hydraulic disc brake kit from you last year. It greatly increased the stopping distance and therefor the safety for my family. I recently purchased a used four winns boat with trailer. The trailer has a surge hitch and disc brakes. The surge hitch was clogged and inoperative. It has also been discontinued. I will be replacing it with this new unit and expect to have working trailer brakes. Thank you for your great products and wonderful prices. 593034



- DM8605101

by:


Great product. It fits like a glove. All parts and component seem to be high quality. It was a little longer than expected but still a solid piece. Super fast delivery at no cost it is hard to beat. 591702



- DM8605101

by:


I just finished the install and went well . Its was a fast install and when i call to order all the staff were very helpful 193485


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Ask the Experts about this Demco Brake Actuator
Do you have a question about this Brake Actuator?


  • Parts Needed to Replace Brakes, Brake Lines and Actuator on Tandem Axle Boat Trailer
  • We have everything that you will need to replace the brakes, brake lines and the actuator on your tandem axle boat trailer, but to make sure we recommend the correct parts for your trailer, we will need a little more information. For a brake line kit, I recommend the Demco Hydraulic Brake Line Kit for Tandem Axle Trailers, # DM5428. This is our most economical hydraulic brake line kit and it uses the standard brake line fittings, so it will be compatible with all hydraulic brake assemblies...
    view full answer...

  • Recommended Disc Brake Components For Demco Kar Kaddy Tow Dolly
  • For your Demco Kar Kaddy, the Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 6,000 lbs # DM8605101 will work great. The Kodiak Disc Brake Kit - 10" Rotor - 5 on 4-1/2 - Dacromet - 3,500 lbs # K2R35D will work well with the brake flange and the idler hubs # DM04369. Then you will just need brake lines like the Demco Hydraulic Brake Line Kit for Single Torsion Axle Trailers - Drum or Disc Brakes # DM5424.
    view full answer...

  • Using Surge Brake Actuator on Trailer with Fold-Away Coupler Hinge
  • If your trailer is equipped with a fold-away coupler hinge like # FHDPB330301 then you can still use a surge brake actuator like the excellent Titan Zinc-Plated # T47154107K. The only thing you will want to add is a flexible brake line across the hinge like the Titan # T0776500 to accommodate this function. Please note that the Kodiak Disc Brake Kit # K2HR35D referenced in your question includes rotor-and-hub assemblies, calipers, mounting brackets, and mounting bolts but it does not...
    view full answer...

  • Replacement Disc Brakes And Actuator For 2005 Trailmaster Single Axle Boat Trailer
  • It sounds like you already have brakes on your trailer. If so, there may not be a need to replace the brake lines and you could install a brake kit like part # K2HR35D. This is designed for 3,500-lb axles and includes hub-and-rotor assemblies; calipers; and mounting brackets. The hub and rotor have a 5 on 4-1/2 wheel bolt pattern. You would then need the actuator. I recommend part # DM8605101. This is the Demco hydraulic brake actuator with electric lockout. This has a 2 inch ball coupler...
    view full answer...

  • Replacement Titan Model 60 Actuator for Disc Brakes
  • We have exactly what you are looking for. The disc brake version of your current Titan Model 60 is part # DM8605101. This actuator fits a 3 inch wide channel, and has a maximum weight capacity of 6,000 lbs. The coupler is compatible with 1-7/8, 2 inch of 50mm trailer balls. This actuator will supply the higher psi needed to actuate your new disc brakes properly.
    view full answer...

  • Trailer Brakes Dragging on Downhill Runs with a Demco Disc Brake Actuator
  • The first thing you should check is the brake adjustment on the brakes themselves. If they are improperly adjusted, readjustment could solve the issue. We have a video detailing how to adjust trailer brakes, check out the 4 minute 30 second mark in the video attached below. You should also check the breakaway lever, to be sure it is not partially activated. The next thing to check is the coupler capacity and the gross weight of the trailer the coupler is mounted on. If the trailer...
    view full answer...

  • Is A Hydraulic or Surge Coupler Adjustable for The Weight of the Trailer
  • A hydraulic or surge coupler isn't adjustable for the weight of the trailer but strangely enough, they don't need to be. The brakes would certainly be more effective if there were more weight on the trailer, but conversely a lighter trailer doesn't need as much braking force as a heavier trailer would. I've spoken with my contacts at Demco and Titan, both of whom confirm this. The more inertia provided by the weight of the trailer and its load, the harder the brakes will apply, but less...
    view full answer...

  • Can a Surge Brake Actuator for Drum Brakes Be Compatible with Disc Brakes?
  • Most brake actuators for drum brakes like your Dico 6000 lb cannot be used for disc brakes. This isn't based on weight capacity, but rather based on the pressure the master cylinder can handle. Most drum brake systems give you 1000 to 1200 psi, and disc brake systems require more with most rated at 1600 psi. The actuators are specific for disc or drum because drum brakes with a disc brake actuator would give too much pressure and in your case, the drum brake actuator will not give enough...
    view full answer...

  • What is the Correct Amount of Brake Fluid for the Demco Disc Brake Actuator # 8605101
  • According to Demco, you will want to fill the brake fluid reservoir 3/4 of the way full with new DOT 3 or DOT 4 brake fluid. If you are bleeding the brakes, you will want to check the brake fluid level to ensure that it remains above half full during the bleeding process. Once you have finished bleeding the brakes, you can fill it to 3/4 full.
    view full answer...

  • Is There any Adjustability with Trailer Surge Brakes
  • Surge brakes do not have any adjustability. If you want to use them on steep hills your solutions would be best. Or you can look into an electric over hydraulic setup which will allow you to use a brake controller to activate the brakes. This gives you total flexibility and control. I attached a help article to this page that would walk you through the entire process of adding EOH brakes to a trailer like yours.
    view full answer...

  • Will the Disc Brake Line Kit 18SI-BLKIT Work with a Demco Brake Actuator
  • Yes, the Kodiak Hydraulic Brake Line Kit # 18SI-BLKIT that you referenced uses the same fitting size that the Demco Hydraulic Brake Actuator # DM8605101 that you referenced has, 3/8-24. This would also work with a Kodiak disc brake kit like the # K2HR35D.
    view full answer...

  • Will 6,000 lb Surge Brake Actuator Work on Single Axle Boat Trailer
  • The Demco Hydraulic Brake Actuator # DM8605101 will work great for you; the 6,000 lb tow rating and 600 lb tongue weight rating are just the maximum capacities for the actuator and you won't have an issue with your single-axle boat trailer being under that weight rating. This actuator is designed for use with trailers that have disc brakes and it will fit a 2 inch hitch ball. I have added a link to a video review of the actuator for you to check out as well.
    view full answer...

  • Replacement for the Reliable ACT-6K Brake Actuator
  • From my research, the Reliable ACT-6K Brake Actuator was rated at 6,000 lbs, for disc brakes, and a 2" hitch ball. If this is correct then I recommend using the Demco Hydraulic Brake Actuator part # DM8605101 which has both a master cylinder and electric lockout feature like you mentioned. The Demco actuator is an excellent option for you. It has a zinc plated finish for maximum corrosion resistance and it is made right here in the U.S.A. with a one year warranty. I have attached a...
    view full answer...


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Info for this part was:

Edited by:
Leah B
Written by:
Lindsey S
Expert Research:
Jameson C
Updated by:
Laura H
Photos by:
Sam P
Installed by:
Randy B
Video Edited:
Zach D
Updated by:
Hannah L

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