Demco Hydraulic Brake Actuator - Drum - Primed - 8" Adjustable Channel Up - 12,500 lbs

Video Transcript for Ultimate Overview of the Demco Hydraulic Brake Actuator-DM8101042

Hello everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at this Demco eight inch adjustable channel up hydraulic drum brake actuator, has a 12,500 pound gross towing weight capacity. Now, this is a hydraulic actuator designed to 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. So with a surge brake system, this actuator is triggered as the trailer moves forward once your tow vehicle starts to slow down. Basically when this happens, this actuator will apply force to the master cylinder back here.

Basically, this inner slide goes into the outer case, provides the force back here in the master cylinder. This in turn supplies the necessary hydraulic pressure to engage your trailer's brakes. This one here has an acetal copolymer lining, helps provide a nice smooth operation as the actuator telescopes in and out. This one is an adjustable channel design, has three different mounting positions for your coupler. Now, the coupler's not included.

We do sell those separately. We had mentioned, as you can see, this is a channel up design, so it allows for greater rise for low riding trailers. The height on the channel itself, if we measure from the bottom to the top, is right at eight inches. The channel width is three inches inside to inside. And this is a heavy duty steel construction.

As you can see, it has a nice prime finish on it. Now, the master cylinder in the back here, it is a composite master cylinder. It's very durable and efficient. It's a glass reinforced nylon construction so to resist rust and corrosion, and it gives you a large reservoir that provides increased capacity for the brake fluid. If you notice right up the top here, it has this automotive style diaphragm cap, which will create a completely enclosed system, help prevent contamination of your brake fluid.

The breakaway cable right here and the hook is included. Now, this is required by law and basically what this does is prevents the trailer runaway situation. So you'll take this hook here with the latch, hook this to the tow vehicle, and if by chance this does come detached from your tow vehicle, it'll pull this cable, which will activate this lever, which will again apply pressure to the master cylinder to apply the brakes on the trailer. So again, it's required by law and it does prevent a runaway situation. Now, this is a bolt-on or a weld-on installation. It is designed to mount to a straight three inch wide trailer top. This part is made in the USA. Now the application, again, this is for trailers with hydraulic drum brakes, gross towing weight capacity of 12,500 pounds, and a maximum tongue weight of 1,250 pounds. The model number on this part is DA10. Now, one note I do wanna mention is because this actuator, you can see in the back here it does not include a reverse lockout, it is recommended that you equip your trailer with either a reverse lockout solenoid that would screw in right back here, or to have free backing brakes on your trailer so that you can drive in reverse without the actuator triggering your trailer's brakes. But that should do it for the review on this Demco eight inch adjustable channel up hydraulic drum brake actuator with the 12,500 pound gross towing weight capacity.