bing tracking image

Demco Brake Actuator - Surge Brake Actuator - DM8609502 Review

content loading

Customers compare DM8609502 to these similar products

Products Featured in this Video

Review of Demco Brake Actuator DM8609502

Speaker 1: Today we're gonna take a look at the Demco weld on hydraulic drum brake A frame actuator with the two inch ball coupler and an 8000 pound weight capacity. Now, this hydraulic actuator will activate your trailer brakes when your tow vehicle slows or stops. Basically when you apply the brakes in your two vehicle, deceleration occurs and the momentum pushed the trailer toward the rear of your vehicle. So, with a surge break system, this actuators triggered as your trailer moves forward once your tow vehicle starts to slow down. So when this happens, the actuator contracts and it applies force to the master cylinder in the back here. And this in turn applies the necessary hydraulic pressure to engage your trailer breaks.

This does use a composite master cylinder. Its very durable and efficient. It's a glass reinforced nylon construction, resists rust and corrosion. Has a very large reservoir to provide increased capacity for the break fluid. And if you notice on the top here, it uses an automotive style diaphragm cap which creates a completely enclosed system.

That'll prevent contamination of the break fluid.Now on the inside of this actuator, they use an acetal copolymer lining, provides a nice smooth operation as the actuator telescopes in and out. This does use the easy latch coupler mechanism on the coupler for simple secure hookup and disconnect. What's nice about it is you just hook up when the latch is in the closed position like it is now. You don't have to open and close it. It's in the closed position you just drop this coupler over your hitch fall and the latch will snap it into place.

Just to show you how that works, I have a pulley. Heres a two inch diameter ball so you can see it's in the closed position. And on a lot of couplers you gotta open it up, put it in, and lock in to place. This one, all you have to do as you can see, you put the ball under there and then you just drop it onto the ball. As you do it, it'll automatically easy latch into place.

Now, you're locked on ready to go. And then when you're done, you want to unattached it. Just pull on this lever back here, open it all the way up and it'll detach it right from the ball. Simple as that.Now, this does include the break away kit. It's all included. Break away kit, you can see, has the snap hook on the end of this cable, ensures a secure connection to your break away lever. Basically, what your break away kit does is this gets attached to the tow vehicle and then in a situation where the trailer might come detached from the tow vehicle, it'll pull this cable which will activate the lever and then set the breaks in the motion so it'll stop that from a runaway trailer. Now, this is a heavy duty steel construction. Has a nice prime finish on it to give you corrosion resistance. This is a weld on installation. This is designed to mount on to a 50 degree A framed trailer. This part is made in the USA. And again, the application is for 50 degree A framed trailers with hydraulic drum breaks. The ball size this coupler fits on is a two inch diameter. Gross towing weight capacity is 8000 pounds. Maxing towing weight capacity is 800 pounds. And this also goes by the model number of DA91. But that should do it for the review on the Demco weld on hydraulic drum break A frame actuator with a two inch ball coupler and an 8000 pound weight capacity.

Info for this part was:

Employee Jeff D
Installed by:
Jeff D

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.