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  1. Trailer Brakes
  2. etrailer
  3. Hydraulic Drum Brakes
  4. 3500 lbs Axle
  5. 10 x 2-1/4 Inch Drum
  6. 14 Inch Wheel
  7. 14-1/2 Inch Wheel
  8. 15 Inch Wheel
etrailer Hydraulic Trailer Brakes - Uni-Servo - 10" - Left/Right - 3.5K
etrailer

etrailer Hydraulic Trailer Brakes - Uni-Servo - 10" - Left/Right - 3.5K

Part Number: AKUBRK-35
In Stock
$155.63
Trailer Brakes
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Hydraulic drum brakes offer more powerful, controlled, and smoother braking compared to electric brakes. 10" x 2-1/4" Assemblies have premium brake pads and e-coated backing plates. Fit 13" to 15" wheels. Great Prices for the best trailer brakes from etrailer. etrailer Hydraulic Trailer Brakes - Uni-Servo - 10" - Left/Right - 3.5K part number AKUBRK-35 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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etrailer by AxleTek Trailer Brakes - AKUBRK-35

  • Hydraulic Drum Brakes
  • 3500 lbs Axle
  • 10 x 2-1/4 Inch Drum
  • 14 Inch Wheel
  • 14-1/2 Inch Wheel
  • 15 Inch Wheel
  • Standard Grade
  • Manual Adjust
  • Single Servo
  • etrailer

Hydraulic drum brakes offer more powerful, controlled, and smoother braking compared to electric brakes. 10" x 2-1/4" Assemblies have premium brake pads and e-coated backing plates. Fit 13" to 15" wheels.


Features:

  • Hydraulic drum brake assemblies are designed for use with a surge-type trailer brake actuator
  • Automotive-grade brake pads offer superior quality, smooth operation, and excellent braking torque
    • Fully bonded to shoes for more consistent braking compared to riveted pads
    • Tapered edges minimize stuttering and brake lockup
  • Single plunger cylinder provides 15 to 20 percent of full braking force when backing up
  • Periodic manual adjustment required
  • E-coat on backing plates fends off rust
  • Adjuster plugs (included) keep internal components free from dirt, grime, and road debris
  • Left-hand (driver's-side) and right-hand (passenger's-side) brake assemblies and mounting bolts included
    • Nuts and lock washers (BRKH10B) sold separately
  • CSA , QAI , and SAE-N certifications ensure quality


Specs:

  • Application: most standard hub-and-drum assemblies, including Dexter, Lippert (LCI), and AL-KO
  • Dimensions: 10" diameter x 2-1/4" wide
  • Mounting flange bolt pattern: 4 bolt
  • Wheel size: 13" to 15"
  • Axle rating: 3,500 lbs
  • Limited 1-year warranty


Reverse Easily with Free-Backing Brakes

Backing up your trailer might be the only time you don't want the brakes to work. Normally, this would be a job for the reverse lockout on your hydraulic actuator. But if you don't have a lockout, you'll need brakes that will you allow you to back up freely instead.


How do they work, you ask?


A close-up shot of a hydraulic drum brake shows the components of the assembly.

During normal forward braking, a fall-away shoe expands to catch your brake drum with enough force to bring your rig to a stop. When driving in reverse, however, these brake assemblies prevent the shoes from fully catching on the drums. This takes away your braking control, allowing the wheels to continue to turn.


Note: Free backing brakes don't activate when you're in reverse. So, keep in mind that a trailer breakaway kit will not be effective if your trailer were to disconnect from your tow vehicle while you're backing up.


Automotive-Grade Friction Material

The pads on these trailer brakes are made of the same friction material that you might find on a car's drum brakes. In fact, the material is SAE-N certified. So, not only does it provide high-performance braking, but it's environmentally friendly, too! With these brakes, your trailer will be good to go on any road throughout the United States and Canada.


The superior quality of these pads is also due to the fact that they're bonded to the shoes, not just nailed down. Riveted brake pads will always give you a screeching reminder to replace your brake shoes. That's because the rivets will scrape against your drum as the friction material wears down. You won't have that noisy problem with bonded brake pads. You'll also get a little more friction pad contact because there aren't any cutouts for rivets. And more friction means more stopping power.


A close-up shot of a drum brake shows a tapered brake pad.

These pads are also tapered, which should help to prevent any broken, crumbly bits of material from rotating inside the drum as the pads wear over time. Brakes without these tapers are more likely to create a jarring braking experience that could cause the brakes to stutter and lock up.


Thoroughly Tested for Safety

A lot of resources have been invested to ensure that these brake assemblies meet the requirements for certification set by the QAI and CSA . Basically, these certifications tell you that these trailer brakes are well built and safe for use on the road. They've been tested for braking performance under real-world conditions to provide the most realistic scenario for the everyday tower.


How to Manually Adjust Trailer Brakes

The more miles you put on your trailer, the more your brake pads will wear down. As they lose contact with the drum, stopping distances get longer and longer. To keep your brakes working great, it's important to adjust them pretty routinely. For this job, grab a floor jack and either a brake adjustment tool (sold separately) or just a standard flathead screwdriver.


Jack up your trailer enough to get the wheel(s) off the ground. Remove the adjuster plugs from the backing plate on the brake, and insert the flat end of the tool through the back of the assembly.


Screenshot from an instruction video shows how to manually adjust the alignment on a drum brake

Push in on the star gear and lift it up. Keep doing this until the brake pads catch on your brake drum. When you can't spin your wheel by hand anymore, back the gear off by about 10 clicks (push down on the star gear). Does the wheel now spin freely (even if it sounds like the brake pads drag slightly on the drum)? Great! Then you're all done with that one and ready to adjust the rest.


How to Break In New Brakes

Once you get these assemblies installed, and your lines flushed with fresh fluid, you'll need to break in these brakes. First, find a long stretch of road or a big, empty parking lot. Speed up to about 40 mph and brake to slow to about 20 mph. Repeat this 15-30 times. The goal is to get the brake shoes properly seated into your drum. You'll know you've done that when it feels less jerky (and more consistent) each time you apply the brakes.


Note: The brakes will be very hot after doing this, so after every 10 stops you'll want to wait about 10 minutes to let the brakes cool off before continuing. If you don't, you might cook and crack the pad material.



B10H-41 etrailer by AxleTek 10" X 2-1/4" LH Hydraulic Brake Assembly - Drivers Side - 3.5K Axles - E-Coat

B10H-42 AxleTek 10" X 2-1/4" RH Hydraulic Brake Assembly - Passengers Side - 3.5K Axles - E-Coat





Customer Satisfaction Score:

Ratings & Reviews

4.8

265 reviews
Hydraulic drum brakes offer more powerful, controlled, and smoother braking compared to electric brakes. 10" x 2-1/4" Assemblies have premium brake pads and e-coated backing plates. Fit 13" to 15" wheels.

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See what our Experts say about this etrailer Trailer Brakes

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    The electric brakes on the Roadmaster Tow Dolly # RM-2050-1 can be converted to surge brakes if you'd like. You'll need the brake assemblies, actuator, and brake lines. For the brakes I suggest # AKUBRK-35. This includes both the left and right hand side which are specific. The brakes are labeled so you know which is which. Our most popular brake actuator is the Demco # DM72VR. This fits a 2 inch hitch ball and has a capacity of 6,000 pounds. For a brake line kit I would go with...
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  • What Free-Backing Hydraulic Brake Assemblies do You Recommend for My 3,500 Pound Axle?
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  • Are There Replacement Braking Assemblies for an 11" Braking Assembly
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    Hello Dan. I can certainly point you in the right direction, but I do not have a way to look up your Jayco camper to know exactly what brakes you will need. As far as the brake assemblies, if you can tell me the weight capacity of the axle that will help a ton to narrow down the correct brakes. For example, the Hydraulic Trailer Brake Kit # AKUBRK-35 will fit a 3,500 lb axle. It uses 10" diameter 2-1/4" thick brake shoes. Please verify your axle capacity and let me know if it is not a...
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