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Free-backing, driver-side drum brake won't engage when you reverse, even if your actuator is activated. Automotive-grade friction pads and e-coated backing plate are long-lasting. Fits 14-1/2", 15", 16" and 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 12 inch, left hand, free backing, hydraulic brake assembly for 7000 pound axles. This hydraulic rim drum brake assembly is designed for use with the surge type trailer brake actuators. This certain one is a free backing design, as you can tell that by the D shaped shoe right here. The free backing design will let you back up without engaging your trailer brake, even if that actuator is activated. Has a fall away brake shoe which will only anchor on the drum when the brakes are engaged as the trailer's moving forward. On these assemblies the brake shoes are lined with a nice automotive grade friction material. This friction material is fully bonded.
It's not riveted to the shoes, gives a longer life, more braking torque. The lining itself has tapered edges and then they do a circular grinding to the material to help prevent any cracking or crumbling that can lead to mechanical lockup. These are a manual adjustment brake, that'd be adjusted down here. On a manual adjustment brake, that does require periodic adjustments to them. What's nice on this one, on the star wheel, the gear itself is a fine tooth brake adjustment gear and that allows for a more precise setting. Also, there is no break-in period needed. The backing plate on this assembly has a nice E-coating to it to help resist wear and corrosion.
Also, what's nice, you'll notice at the very bottom, there's a hole here that you stick your tool through to do your adjustment to your brakes. Normally, there's no in plug there, and the problem that is, is you can get dirt inside there and cause problems with the braking, so this one actually includes the rubber adjuster plug. You just pop this plug out and you can put your tool in and then when you're done adjusting, you put the plug back in. The mounting bolts, the nuts and the lock washers are sold separately. We do sell those on our website. This brake assembly is certified for QAI, which is Quality Assurance International, and CSA, which is Canadian Standards Association. This hydraulic brake is a single plunger, or also called uni-servo design, as you can see.
The size on this is a 12 inch by 2 inch, and when they say the size, this is the driver's side, or left-hand, brake assembly for 7000 pound axles. When they say the size of 12 inch by 2, 12 inch is the diameter which is measured here to here, and the 2 inches is the width of the brake shoe, or the pad. Basically, if we take a ruler, edge to edge you can see is 12 inches, and the width on the pad lining is 2 inches, so 12 inches by 2 inches. This is designed for an axle that's rated for 7000 pounds. I had mentioned this is a free backing design. It does use 12 inch drum, and the other thing, this is a 5 bolt brake flange mount.
You can see the 5 holes here, so you do have to make sure that the axle, when you install these on, will have the 5 bolt pattern to their brake mounting flange. That should do it for the review on the 12 inch, left hand, free backing, hydraulic brake assembly for 7000 pound axles.
Average Customer Rating: 4.9 out of 5 stars (213 Customer Reviews)
Free-backing, driver-side drum brake won't engage when you reverse, even if your actuator is activated. Automotive-grade friction pads and e-coated backing plate are long-lasting. Fits 14-1/2", 15", 16" and 16-1/2" wheels.Brake assemblies fit perfectly in place of the OEM Dexter brakes. Quality looks fine, aluminum wheel cylinders are a notable improvement. We'll have to wait another 10 years to see if these hold up as well as the US-made Dexters.
Everything was there. All assembled. The only thing I did before I mounted the backing plates was to remove the adjuster wheel and take it apart and put some marine grease on the threads and under the cap. Other than that, I just bolted it on the axle, hooked up the brake line, and I was good to go. That easy.
Why are they no instructions when I click on instructions? That’s not gonna make for a good review!!
Changing out the brakes on my boat trailer was actually much easier, and cheaper thanks to these guys, than I expected. etrailer.com had every single part I needed and the videos explanations made selection easy.
Will bookmark this site for sure.
Cheers
Great product for full brake, bearing and drum replacement. Easy to install and has been working fantastic for a year now.
Very good product. Saved a lot of $$$ installing myself. working fine in salt and fresh water.
2nd time replacement. Thank you for your service.
GOOD SERVICE RECIEVE MY ITEMS WITHIN A FEW DAYS VERY QUICK
easy to install, held up well, no complaints, would recommend to friend, would buy again, easy to order correct part
My parts arrived on time. Great service. Olivia went out of her way to help me correct a order i had previously made..
Thanks for good job well done all around
Quick delivery and pleasant sales peopl e.
perfect fit good quality and great ser vice
Great product Very fast service.
I bought these new for less than the local brake materials shop quoted me to rebuild the old brakes. They have a nice coating that should resist rust for awhile. They seem to slow the trailer well. I would buy them again.
Very helpful staff. I did all 4 breaks and bearings complete. Glad I checked things out, seals were gone and one wheel had bearings that failed and I was lucky I made it home. Also put on new brake lines and master cylinder, all good now. Tnks
After calling around to Napa, Koi and 2 other trailer companies and not receiving any help I called etrailer and got in touch with Quinn. I explained what I was needing, and he not only found me the right parts, but he also told me about the house brand which was a cheaper option. Everything showed up in 2 days and fit perfectly.
Brakes arrived quickly and in excellent condition. The description provided by etrailer matched exactly what I needed. Worthy of five stars. Thank you
Great service, fast delivery, and just the right quality parts! Would buy again
Parts arrived in very good condition .they fit perfectly and work very well. used the parts to restore failed surge brakes on an old utility trailer I am very happy with the parts and service thank you very much
Amazing value. Super fast delivery. Replaces the original AL KO for a fraction of the cost. I understand why so many folks recommended Etrailer to check with and order from.
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Sierra K.
6/6/2022
We do not have any instructions included in trailer brakes but we do have an installation video on a similar hydraulic brake that will be the same install procedures here:
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