Surge actuator features a corrosion-resistant composite master cylinder and durable zinc plating with a 200-hour salt spray rating. Adjustable up channel lets you mount coupler attachments (sold separately) in 1 of 3 positions. 2-Hole bolt-on case.
Features:
Specs:
Note: This actuator is compatible with the Demco manual reverse lockout kit (DM5939). If you choose not to add the reverse lockout, it is recommended that you equip your trailer with free-backing brakes so that you can drive in reverse without the actuator triggering your trailer's brakes.
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.
Adjustable Channel Design
The adjustable channel on this trailer brake actuator allows for ultimate versatility. Mount almost any type of coupler (sold separately) - from a standard ball coupler to a lunette ring or clevis attachment - to fit your specific application. In addition, the 3 mounting positions on the channel let you adjust the height of the coupler. Just place the coupler so that it matches the height of the ball mount or other hitch attachment on your tow vehicle and you will be able to tow your trailer levelly.
This actuator is great for low-riding trailers. This is because the adjustable channel is positioned so that the mounted coupler can sit above the actuator tube, allowing for a greater rise than with a standard center-mounted channel. As a result, you can line up your low trailer with your tow vehicle's hitch for a level setup. Alternatively, if you have a standard trailer paired with a lifted tow vehicle, then this channel-up design will help you achieve a level towing setup for this type of application as well.
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 200-hour salt spray rating. In addition, the composite master cylinder is made of corrosion-resistant glass-reinforced nylon to further ensure durability.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Speaker 1: Today we're going to take a look at the Demco Hydraulic Trailer Brake Actuator for drum brakes. This is the adjustable channel-up design, and has an 8,000 pound weight capacity.Now this hydraulic actuator will activate your trailer brakes when your tow vehicle slows or stops. It does use the adjustable channel here, which has three different mounting positions for your coupler. Now the coupler that goes in here is sold separately, and this is a channel-up design, so it does allow for a greater drop.This all has a nice zinc plating on it to offer excellent corrosion resistance. It does meet a 200 hour salt spray rating. On the very back here, it uses the composite master cylinder, which is very durable and efficient.
It's a glass-reinforced nylon construction to resist rust and corrosion. It has a nice, large reservoir to provide increased capacity for your brake fluid. And if you notice at the top here, uses an automotive-style diaphragm cap which creates a completely enclosed system to help prevent contamination of the brake fluid.On the inside of this actuator, they use an acetol copolymer lining. It provides a nice, smooth operation as the actuator telescopes in and out. If you notice, it has the break-away cable here, which is all included.
It has a snap hook on the end of the cable and ensures secure connection for your break-away lever.This is a heavy-duty construction. It's a bolt-on installation. If you look at the bottom here, it's a two-hole case. It has two mounting holes on each side of the actuator. It does require a half-inch by four and a half-inch long grade five bolts for mounting it, and those are not included.This part is made in the USA.
A few specs on this again, the application, this is for trailers with hydraulic drum brakes. Gross towing weight capacity is 8,000 pounds. Maximum tongue weight is 800 pounds. The channel width, the inside to inside is right at three inches. Channel height, we mentioned, is right at eight inches.
Mounting for this, it's designed to mount on a straight three inch wide trailer tongue. And this actuator also goes by the model number of DA91.But that should do it for the review on the Demco Hydraulic Trailer Brake Actuator for drum brakes, with the adjustable channel-up design and an 8,000 pound weight capacity.
Average Customer Rating: 5.0 out of 5 stars (1 Customer Reviews)
Surge actuator features a corrosion-resistant composite master cylinder and durable zinc plating with a 200-hour salt spray rating. Adjustable up channel lets you mount coupler attachments (sold separately) in 1 of 3 positions. 2-Hole bolt-on case.Exactly as advertised, seems heavy duty, master cylinder was easy to bleed, installed and functional within an hour, hardest part was removing previous old discontinued hits system.
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