/
Demco/
Hydraulic Drum Brakes/
3500 lbs Axle/
10 x 2-1/4 Inch Drum/
13 Inch Wheel/
14 Inch Wheel/
14-1/2 Inch Wheel/
15 Inch WheelItem # 40716-15
Retail:$149.08
Our Price: $116.34
You Save: $32.74This item qualifies for Free Shipping
Free-backing, driver's-side and passenger's-side brakes won't engage when you reverse, even if your actuator is activated. Galvanized steel resists rust, making the assemblies great for boat trailers. Fit 13" to 15" wheels.
Features:
Specs:
Note: Because free-backing brakes are designed to eliminate nearly all friction between the brake shoes and the drum when you are driving in reverse, a trailer breakaway kit will not be effective should your trailer disconnect from your tow vehicle while you are backing up.
Free-backing brakes let your trailer move in reverse without the brakes being activated by your surge actuator. These brakes are needed if your actuator does not have a reverse lockout, which is a mechanism that ensures that the actuator does not activate when your rig moves in reverse.
Each of these Demco free-backing brake assemblies has a fall-away shoe that is designed to provide full braking action when your trailer is moving forward and to supply only limited friction when the trailer is moving in reverse. This is largely due to the incorporated dual springs at the shoe's pivot point. (One spring sits on either side of the shoe lever, so only a single spring is visible when looking at the brake assembly.)
When your rig is moving forward and you engage the trailer brakes, each fall-away shoe expands normally, with the leading edge of the shoe catching the drum. This occurs because the plunger on the hydraulic cylinder pushes on the shoe lever, forcing the leading edge of the brake shoe into the drum. Once that edge catches, the dual springs at the shoe's pivot point facilitate braking by forcing the rest of the shoe to pivot into the drum. The action of the shoe against the drum provides the friction required for braking.
When you are driving in reverse, however, the hydraulic cylinder and the springs work against one another. Even though the plunger pushes on the shoe lever, the dual springs of the fall-away shoe overcome the pressure from the brake cylinder, keeping the leading edge from catching on the drum and ensuring that the shoe does not fully pivot into the drum. Because the shoe makes only slight contact with the drum, just enough friction is generated so that only a minimal amount of braking occurs when you are in reverse.
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Video of Demco Hydraulic Brake Kit - Free Backing - Galvanized - 10" - Left/Right Hand Assemblies - 3.5K
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Speaker 1: Today we're gonna take a look at the Demco 10 inch left hand/right hand side free backing hydraulic drum brake assembly for 3500 pound axles, with a galvanized finish. Now, these are marine grade hydraulic drum brake assemblies. They're great for boat trailers. They are designed for use with surge type trailer brake actuators. These assemblies are a sturdy corrosion resistant field construction. If you notice the back is ...
they use galvanized backing plates on it. The spring hardware is all stainless steel. And the wheel cylinder is a zinc plated wheel cylinder. It is a universal wheel cylinder, you can see it has a single plunger design. Now, these brakes are free backing design.
And what that basically means is it'll let you back up without engaging the trailer brake, even if your actuator is activated.And the way they do that is the primary shoe right here is a riveted fall away brake shoe that'll only anchor on the drum when the brakes are engaged and if the trailer is moving forward. In a free backing design assembly, you can always tell by the primary shoe will be a "D", have a "D" design to it. You can see this one, same way. These are manual adjustment brakes. You have to adjust them right down here where the adjustment gear is.
So, you just turn that gear and it'll adjust either in or out. And it does require a periodic manual adjustment.Now, the mounting hardware to install these is sold separately, we do list them on our website. And they're usually listed on this product page as a related product. Now the size on this, they are 10 inches by 2.25 inches. And what that size would mean is the 10 inches is the diameter, that's measured from this shoe all the way over to that shoe.
So if we put the ruler on it, there's your 10 inch diameter. The 2.25 inch would be the width of the pad on the brake shoe. There's your 2.25 inch width. They do have a brake mounting flange bolt pattern of four lugs, four on four inch bolt pattern. The wheel size that'll work on these is 13 inch, 14 inch, and 15 inch. And they are designed for axles rated up to 3500 pounds. So each assembly would be rated at 1750 pounds. And when they're used of both on the same axle, it'll meet the 3500 pound axle rating.Does include both the driver side and passenger side brake assembly. And the last thing I just wanna show you is how to tell what assembly goes on what side. Now, on a new assembly, it'll always have a sticker that'll say right hand or left hand on it. But, if you didn't have that sticker, the best way to tell is just look at the length of the brake pad on the shoe. This pad goes from here to here. This one's from here all the way to here. This is the longer pad. This is the shorter pad. The shorter pad is always your primary shoe. That's made to face the front of the trailer. So that'll tell you that this one is for the right hand passenger side assembly. And this one here is the shorter shoe. And this is gonna go this way, so this'll be the left hand driver side assembly.But that should do it for the review on the Demco 10 inch left hand and right hand side free backing hydraulic drum brake assembly for 3500 pound axles, with a galvanized finish.
Average Customer Rating: 4.9 out of 5 stars (22 Customer Reviews)
Free-backing, driver's-side and passenger's-side brakes won't engage when you reverse, even if your actuator is activated. Galvanized steel resists rust, making the assemblies great for boat trailers. Fit 13" to 15" wheels.I accidentally ordered the wrong parts and was immediately taken care of and helped with ordering the right ones. Thank you Kim for your help and excellent customer service. 403775
Perfect fit, I had them installed in 20 minutes. Super fast delivery. 491616
2000 ez loader trailer complete brake job. 2 axle torsion suspension. All 4 axles . I ordered 4 complete brake /backing plate assemblies and 4 new hubs. My complete order showed up on time afew days later. After I got the trailer and boat jacked up and started to take things apart I overlooked not ordering the transitional flexible brake lines that go from the hard lines into the back of the brake assembly. After traveling for 30 minutes to a hydraulic brake line shop to have lines made up they told me they did not have the fittings I really needed these lines to get this job done for the weekend to get the boat out on the water. So I called etrailer and was connected to Tiffany who I must say provided the best customer service I've ever experienced she worked with me on getting the correct items and set up next day rush shipping. She even personally made sure that my order got out the door and called me personally to let me know . There aren't too many companies that goes to that length to serve their customers. The next day at 10 a.m. the were delivered to my front door. (From half way across the United States ) . I was trilled to say the least. Thank you etrailer and a special thank you to Tiffany. In customer service for your personal attention and follow up regarding my order. 569949
Hey George just got done installing your brake system on my Carkins dual axle boat trailer, what are nice product they went on beautiful no issues whatsoever extremely satisfied following is a picture of before and after , I just bought the boat and trailer and could not believe the condition of the brakes 376565
Fast Shipping!! These were just as the description said. An exact replacement for my old rusted 10” X 2 1/4” drum brake assemblies. 505389
I primarily use this trailer in salt water and the shoes are holding up pretty good so far,I’ve put it in the water about 15 times now and shoes have no signs of cracks yet I usually replace em about every two yrs just as preventative maintenance. 548135
Great communication and parts came quickly with free shipping. Brakes were easy to install, and great quality. Great experience! 654767
Slid right into place and worked perfectly! I could not be happier. 640925
Brakes are working great 635427
Installed perfectly and functioning well. (be sure to turn old drums) 629097
Easy install great price 615832
Brakes work well and are a good value. I also bought an actuator and new lines to replace an existing, old trailer brake system. The detailed descriptions of these products is great and helped verify that they would fit my trailer. The gravity bleeding system that the etrailer video shows did not work for me. I repeatedly pulled on the emergency breakaway handle on the actuator to fill and bleed the system. 596035
I bought a set of trailer brakes from etrailer.com, they were easy to install and function really good on my trailer. I talked with Robert over the phone at etrailer and he was extremely knowledgeable about this product and he helped me buy the correct brakes for my trailer. I receive my brakes three days after I ordered them, extremely fast service. I will use etrailer.com again to by parts for my trailer. 572631
fast shipping good product very happy 561369
I ordered a set of complete galvanized trailer brake backing plates/linings/master cylinder, and a new surge coupler, and couldn't be happier with the quality, price, and very quick free shipping. Very easy on line ordering experience...... 559561
Brakes arrived within a couple days and seem to be very high quality. Have not installed yet but looks like they will be perfect and hold up better than the stock ones on my boat trailer. 555155
Great product. Fits great and works gre at. 543030
Easy and clean install versus buying individual components. 529609
So far they are working great. 524215
Everything looked great when package was received. New brake assemblies bolted right up to the factory flanges and worked perfectly after bleeding the system. 423132
Should last longer than OE brakes 407661
Great product,very good quality,easy installation. Works great. 400123
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