The electric reverse lockout makes backing up easy. When you shift into reverse, the solenoid automatically stops the hydraulic pressure so the trailer brakes stay off. That means you can move uphill or around tight corners without dragging the brakes. The built-in shield keeps the solenoid protected from dirt and moisture, so it works reliably every time.
The offset adjustable channel has 5 mounting positions that help line up tall trailers for a level setup. Because the channel is positioned below the actuator tube, it provides extra drop compared to a standard center-mounted design. The lunette ring couples with a pintle hitch and can be adjusted to match your trailer height for a straight, stable connection.
Built from durable steel, this actuator is made for serious loads—up to 20,000 lbs gross towing weight and 2,000 lbs maximum tongue weight. The sturdy housing resists bending in jackknife situations, and the primed outer casing with painted inner slide is ready for long-term use on hardworking trailers.
When you slow down, momentum pushes your trailer forward and activates the hydraulic master cylinder. The unique roller design reduces resistance inside the actuator so it telescopes smoothly in a straight line. That means consistent brake response with disc brakes and less wear on components during heavy stops or long hauls.
A built-in breakaway kit is included for extra safety if the trailer ever separates from the tow vehicle. The actuator welds onto a straight 3" wide tongue for a solid connection that won’t loosen under load. Once welded and wired, you get confident braking performance every time you hit the road or roll down the ramp.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello everybody, this is Jeff at etrailer.com. Today I'm gonna take a look at this Dexter Weld-On Disc Brake Actuator with the Lunette Ring and the Five-Position Adjustable Drop Channel. Has a 20,000 pound gross towing weight capacity. Now you'll use this actuator to synchronize your trailer's disc brakes with your tow vehicle brakes. And this one has a lunette ring up front here that'll couple with a pintle hitch. And the diameter on this lunette ring is three inches.
Now this hydraulic actuator will activate your trailer's brakes when your tow vehicle slows or stops. Basically what happens is when you apply the brakes in your tow vehicle, deceleration occurs and the momentum will push your trailer toward the rear of your vehicle. And with this surge brake system, the actuator is then triggered as your trailer moves forward while the tow vehicle slows down. Basically the actuator will telescope, this outer portion will go inside, so it'll telescope and apply force to the master cylinder that's in the back here. Which in turn supplies the necessary hydraulic pressure to engage your trailer's brakes.
Now this one is the unique roller design. It'll reduce the resistance during telescoping to create a straight-line movement. If you notice here, there's two rollers here, two down here. And also what's nice is on the end of each roller, they do have a grease Zerk fitting that'll allow you to hook a grease gun to and pump grease in there to lubricate those rollers. Now this one here, let me just zoom in.
This one has a nice prime finish on the outer casing and in the inner slide is a painted finish. The channel on this you can see, it is an offset adjustable channel. Has five different mounting positions for the coupler. And this one here gives you a built-in drop, which is great for use on tall trailers. This is a sturdy durable steel construction.
It'll resist bending in any jackknife situations. Also included with this if you notice, and just unhook it here, but you'll see this chain that's connected to this lever here. This is your breakaway cable and it is required by law 'cause it'll prevent a trailer runaway situation. Basically what you'll do is you'll take this chain with the hook on the end here and run this to your tow vehicle and hook it onto the tow vehicle. And then what happens is in case this comes detached from your tow vehicle, it will pull this chain, which will activate the lever, which would again apply pressure to the master cylinder back there, which would apply the brakes in a runaway situation. Now also included on this actuator, on the very back here, let me spin this. This is where it'll connect to your brake lines, but if you'll notice under the shield here, it has an electric reverse lockout solenoid. And the reason that's on there, that'll let you back up without actuating your trailer brakes. Basically what happens is this electric reverse lockout is automatically activated when you shift your tow vehicle into reverse. The solenoid wires into your trailer connector, which will connect to your tow vehicle, so that it can detect when you're in reverse. So when you go to reverse in your vehicle, that solenoid ensures that the hydraulic actuator does not activate your trailer's brakes, thus allowing you to back up your vehicle. Now to use this solenoid, this lockout solenoid, you do have to have either a five-way flat, six-way round, or a seven-way trailer connector. Also if you notice we mentioned it has this protective shield around the solenoid to protect any damage to it. And this is a weld-on installation. It is designed to fit on straight three inch wide trailer tongues. Application again, this is for trailers with disc brakes, gross towing weight capacity is 20,000 pounds. Maximum tongue weight capacity of 2000 pounds. But that should do it for the review on this Dexter Weld-On Disc Brake Actuator with the Lunette Ring and the Five-Position Adjustable Drop Channel, has a 20,000 pound gross towing weight capacity.
Ratings & Reviews
Do you have a question about this Brake Actuator?
Condition: Badly Dinged
Notes: Solenoid shied badly bent. Otherwise new and unused.
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