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Marine-grade, free-backing, driver-side brake won't engage in reverse, even if actuator is activated. Automotive-grade friction pads are long-lasting. Dacromet-coated backing plate resists rust. Fits 14-1/2" to 16-1/2" 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.
This free-backing hydraulic brake assembly has a fall-away shoe, which provides full braking when your trailer is moving forward, but supplies only limited friction when the trailer is moving in reverse. During normal forward braking, the fall-away shoe expands to catch your brake drum. When driving in reverse, however, the fall-away shoe's extra spring will overcome the pressure from the brake cylinder. This keeps the leading edge from catching on the drum, so the shoe will not fully pivot into the drum. This exerts a smaller amount of friction, just enough to provide a minimal amount of braking when in reverse.
This trailer brake assembly acts as part of your trailer's hydraulic braking system. A hydraulic trailer brake actuator is required for this brake to function.
This brake assembly meets the requirements for certification by the Canadian Standards Association (CSA). The CSA creates standards, which when complied with ensure a safe and quality product. This brake assembly underwent extensive testing to measure stopping distances when braking. This brake has also been tested by QAI for braking performance in a complete automotive setup and under real-world conditions to provide the most realistic scenario for the everyday driver.
Each shoe on this brake assembly is lined with automotive-grade friction material for improved stopping performance and longevity. The friction material is fully bonded onto the surface of the brake shoe. This lining is custom-molded for a perfect fit. The edges are tapered to ensure long-lasting performance. This taper, along with the circular grinding that the lining undergoes, helps to prevent cracking and crumbling. This durability helps to prevent mechanical lockup, which can occur when brake shoes are excessively worn or broken.
The friction material is also SAE-N certified, which means that it is an environmentally safe product that complies with California and Washington regulations regarding the composition of brake pads. As a result, this material not only provides high-performance braking that can endure the test of time, but it is also environmentally friendly and safe for use throughout the United States and Canada.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today, we're going to take a look at the twelve inch by two inch uniserval, free backing hydraulic trailer brake assembly with the dacramat finish, for fifty two hundred pound up to seven thousand pound axles and this is the left hand driver's side assembly. Now this hydraulic drum brake assembly is a uniserval free backing design which is used on trailers with surge type brake actuators that have no reverse lockout. This one has the nice dacramat coating over the whole wheel which is usually used in marine application because it provides superior corrosion resistance for fresh water or salt water use. The uniserval means it has the single plunger design cylinder right here. Then the free backing design also. The free backing you can tell by the fall away shoe that has the D, looks like a D shape to it. This free backing design will let you back up without engaging the trailer brake even if the x rater is activated.
This fall away shoe, the D shaped shoe, provides full braking when your trailer is moving forward by a supplies only limited friction limited trailer's in reverse. The size on this is a twelve inch by two inch driver side brake assembly. When they say twelve inch by two inch, the measurement they're talking about as the twelve inch would be the diameter from this pad straight across to that pad, and then the two inch would be the width of the pad on the shoe itself. If we go to measure this, let me show you, edge to edge on the pad, you can see it's right at twelve inches. Then the width of the pad is two inches. Twelve inch by two inch, and this is the left hand driver's side assembly and you might want to know how to tell that.
Of course on a new one you'll get a sticker on it, it'll say left hand or right hand. If you had a brake assembly that you're looking at and there was no markings on it, basically just look at the shoes that are on it. If you look at this shoe right here it goes from here to here and then if you look at this one it goes all the way from here to here. This is a longer shoe, this is a shorter shoe, the shorter shoe is the primary shoe, that would face the front of the trailer. So because of that you'll know that this is the left hand driver's side assembly. The brake shoes on this assembly are lined with an automotive grade friction material.
This friction material is fully bonded, it's not riveted to the shoes, so it gives you a lot longer life, more braking torque. The pad itself, or the lining, you can see what they do is they do a tapered edge. A lot of pads on some brake assemblies would just be cut off straight across and has a ninety degree edge to it, sharp edge. Some things they actually taper that edge on both ends, then they do a circular grinding of the pad to prevent cracking and crumbling that can lead to a mechanical lock up. Now this is a manual adjusted brake assembly so it does require periodic manual adjustment.
You do adjust it right here down this right adjustment here. Nice thing on this one it uses a very fine tooth brake adjustment gear so it allows for a more precise setting. There is no brake inaudible 00:02:52 follow your initial adjustment. On the back to access that adjustment you pop out this plug and there's a hole there you can put your tool through to adjust your gear. This brake assembly does include that adjuster plug, which is nice a lot of brake assemblies will not include that, they just leave the hole open and you don't' really want that because dirt can get in there and cause a problem. This includes the actual plastic plug in there. As you can see it's designed to fit a five hole brake mounting flange, now the mounting bolts, nuts and rock washers that are used to attach this the the flange, they are sold separately. This assembly is certified by USSAE standards and CSA, which is the Canadian standard. Again, the dimension is twelve inches by two inches. It's for axles fifty two hundred pound, up to seven thousand pound axles and it is designed to be used with twelve inch brake drops. That should do it for the review of the twelve inch by two inch uniserval free backing hydraulic trailer brake assembly with the dacramat finish for fifty two hundred pound to seven thousand pound axles. This is for the left hand driver's side assembly.
Average Customer Rating: 4.6 out of 5 stars (49 Customer Reviews)
Marine-grade, free-backing, driver-side brake won't engage in reverse, even if actuator is activated. Automotive-grade friction pads are long-lasting. Dacromet-coated backing plate resists rust. Fits 14-1/2" to 16-1/2" wheels.Brake shipped the next day and received 3 days later. Went on easily, reinstalled the hub and bearings, but can't get the brakes to adjust using the star on the bottom. Of course no instructions came with the brake and no instructions on which way to turn the star. So here I am all put back together and can't get it adjusted!
Now I have to take it all apart again, wait on parts and miss another weekend of boating! So as far as I'm concerned this thing is Chinese garbage! I've done this before and never had such troubles!!!!
These make the work of changing trailer brakes mind-numbingly easy. Definitely worth buying this unit versus messing with spring kits etc. They adjust easily as well, as long as you have the appropriate tool to do so.
Placed order on a Sunday. Parts were in stock but shipped on a Thursday. If you batch and queue shipments you should say that in your shipping information. Also, the packaging was completely unacceptable. Both parts stacked in a box with nothing to keep them from banging against each other. Upper brake assys had chipped brake lining. The other, missing bleeder cap.
Katrina B.
5/5/2022
We dont like to see this kind of issue. I have sent your information over to our customer service department for them to better assist you.
I purchased four of these for my 1993 boat trailer. It was cheaper and easier to buy 4 of these than to buy the parts and rebuild the old ones. The parts were high quality and easy to install.
Gary
6/13/2018
The items mentioned are still working well. I have been so pleased with my etrailer purchases that we bought 4 new tires and rims from you this spring. Paid less for 4 tires and rims than the local dealer wanted for two tires, no rims.
1974 was the year of this boat and trailer. i can tell you that the origanal brake assemblys were SHOT! i had no brakes on the trailer for years. and now ( after blowing my wheel cylinders on my truck) i have brakes on the trailer again. (dont know why i waited so long this job was not that hard)As a truck and trailer unit i have better braking than just the truck by itself. i bled the brakes and adjusted them. i had my wife and daughter actuate the surge brake cylinder. its simple enough to do. time for the lake!
1974 was the year of this boat and trailer. i can tell you that the origanal brake assemblys were SHOT! i had no brakes on the trailer for years. and now ( after blowing my wheel cylinders on my truck) i have brakes on the trailer again. (dont know why i waited so long this job was not that hard)As a truck and trailer unit i have better braking than just the truck by itself. i bled the brakes and adjusted them. i had my wife and daughter actuate the surge brake cylinder. its simple enough to do. time for the lake!
Great fit, made the repair nice and easy.
Actually more cost/time effective to remove 5 bolts and reinstall 5 bolts plus bleed wheel cylinder rather than fighting clips, springs, cleaning and adjusting everything.
These fit my application like a glove !!! Way easier than piecing together all the parts separately!! Hardest part of the install was re-starting the brake line fitting because it fit so perfectly to my application !!
perfect replacement, works great, great price. Very happy!
Carla M. worked with me to make sure we had all the right parts for my boat trailer. I am quite happy with her help.
Once again a job well done, all parts were correct that the tech recommended when I explained what I was doing. After I ordered the parts came sooner than I expected. Great instructional videos if you need them.
Perfectly packaged, and Fast delivery!
Very happy with her knowledge of the products. Pleasant to talk with. I received the products in a timely manner. Over all very happy. Thanks.
Product was exact replacement of old brakes. Order was processed and shipped quickly.
Awesome service and fast delivery everytime. Thank you etrailer!
Very happy with all the items. Quick shipping and all appears to be of decent quality.
The brakes were easy to install and have worked perfectly,
Great condition, perfect fit and good f inish.
Very good. Thanks
Good product, good price, fast delivery & excellent communication!
exactly what I was looking for at a great price!
Helpful service and great delivery. Sales rep was very helpful.
Great
Excellent service, thank you.
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Caleb
7/10/2018
The products I bought from you over a year ago are still working flawlessly. I havent had any issues whatsoever. Thanks for following up and next time I shop for trailer parts I will be using etrailer, you guys have great customer service. I always recommend you to anyone I know whos looking for trailer parts. Thanks again