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Demco Hydraulic Drum Brake Assembly - Duo Servo - Galvanized - 10" - Left Hand - 3,500 lbs

Demco Hydraulic Drum Brake Assembly - Duo Servo - Galvanized - 10" - Left Hand - 3,500 lbs

Item # DMSB18794M
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Shipping Weight: 9 lbs
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Driver's-side hydraulic trailer brake assembly features a dual-plunger design. Galvanized steel resists rust, making the assembly great for boat trailers. Mounting flange has 4-bolt pattern. Call 800-298-1624 to order Demco accessories and parts part number DMSB18794M or order online at etrailer.com. Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Demco Hydraulic Drum Brake Assembly - Duo Servo - Galvanized - 10" - Left Hand - 3,500 lbs. Accessories and Parts reviews from real customers.
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  • Reviews (10)
  • Q & A (0)
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Demco Accessories and Parts - DMSB18794M

  • Trailer Brakes
  • Hydraulic Drum Brakes
  • Brake Assembly
  • Demco
  • 10 x 2-1/4 Inch Drum
  • LH
  • Dual Servo
  • 3500 lbs

Driver's-side hydraulic trailer brake assembly features a dual-plunger design. Galvanized steel resists rust, making the assembly great for boat trailers. Mounting flange has 4-bolt pattern.


Features:

  • Marine-grade hydraulic drum brake assembly is great for boat trailers
    • Designed for use with surge-type trailer brake actuators
  • Sturdy, corrosion-resistant steel construction
    • Galvanized backing plate
    • Stainless steel spring hardware
    • Zinc-plated wheel cylinder
  • Dual-plunger design delivers same amount of braking when driving either forward or in reverse
  • Riveted brake shoes provide increased durability
  • Periodic manual adjustment required
  • Mounting bolts sold separately
  • Made in the USA


Specs:

  • Configuration: left hand (driver's side)
  • Dimensions: 10" diameter x 2-1/4" thick
  • Mounting flange bolt pattern: 4 on 4"
  • Wheel size: 13" - 15"
  • Axle rating: up to 3,500 lbs
  • 1-Year warranty


SB18794M Demco Galvanized 10" Marine Trailer Brake Assembly - Duo Servo - Left Hand




California residents: click here



Customer Reviews

Demco Hydraulic Drum Brake Assembly - Duo Servo - Galvanized - 10" - Left Hand - 3,500 lbs - DMSB18794M

Average Customer Rating:  4.6 out of 5 stars   (10 Customer Reviews)

Driver's-side hydraulic trailer brake assembly features a dual-plunger design. Galvanized steel resists rust, making the assembly great for boat trailers. Mounting flange has 4-bolt pattern.

- DMSB18794M
by:

Fast and cheap!



- DMSB18794M
by:

I work for Kansas Jet Center, LLC. at the airport in Manhattan KS, and these brake assemblies made quick work of replacing the brakes on our belt loader. We will definitely look to etrailer.com in the future when we need components for our ground service equipment!



- DMSB18794M
by:

I purchased these items without looking at them in person, witch I normally don't do. After ordering I read more about the product, and I thought I ordered the wrong items. I received them in a very short period in a professionally packed package, opened them up and looked them over. To my surprise the we're a perfect fit. To make a long story short, thinking I ordered wrong parts, I called customer service to request a rma# to return, before receiving parts. They had no problems with me returning the product. Very professional friendly person I talked to on the phone, she even tried to find what I was looking for. Needless to say I and keeping what I had ordered and will use it. They gained a customer and more orders to come. Thanks etrailer.com Leo



- DMSB18794M
by:



- DMSB18793M
by:

Review from a similar Demco Galv Duo Servo 10 Inch in Accessories and Parts


I purchased these items without looking at them in person, witch I normally don't do. After ordering I read more about the product, and I thought I ordered the wrong items. I received them in a very short period in a professionally packed package, opened them up and looked them over. To my surprise the we're a perfect fit. To make a long story short, thinking I ordered wrong parts, I called customer service to request a rma# to return, before receiving parts. They had no problems with me returning the product. Very professional friendly person I talked to on the phone, she even tried to find what I was looking for. Needless to say I and keeping what I had ordered and will use it. They gained a customer and more orders to come. Thanks etrailer.com Leo



- DMSB18793M
by:

Review from a similar Demco Galv Duo Servo 10 Inch in Accessories and Parts


I work for Kansas Jet Center, LLC. at the airport in Manhattan KS, and these brake assemblies made quick work of replacing the brakes on our belt loader. We will definitely look to etrailer.com in the future when we need components for our ground service equipment!


Comments
These brakes are still going strong!
Chris H - 02/20/2018



- DMSB18793M
by:

Review from a similar Demco Galv Duo Servo 10 Inch in Accessories and Parts


Had problems with my boat trailer brakes. Corrosion from salt water use made them stick and drag. Purchased dual servo brake assemblies to eliminate the extra linkages on single servo brakes and my brakes now work like new. etrailer.com treats you like a valued customer...service, advice and follow-up.



- DMSB18793M
by:

Review from a similar Demco Galv Duo Servo 10 Inch in Accessories and Parts


After having trouble on the road, etrailer was quick in gettiing me the correct replacement parts to salvage at least half of my vacation. The brake and hub assembly couldn't be easier to install to get me back on the road saftly. Thanks to all at etrailer for expediting my order so Quickly Edward D.



- DMSB18793M
by:

Review from a similar Demco Galv Duo Servo 10 Inch in Accessories and Parts




- DMSB18793M
by:

Review from a similar Demco Galv Duo Servo 10 Inch in Accessories and Parts



10
10

Ask the Experts about this Demco Accessories and Parts



  • Can the Duo-Servo Demco Hydraulic Brake Kit Replace a Uni-Servo Dexter Hydraulic Trailer Brake Kit
    The Duo-Servo Demco Hydraulic Brake Kit # DMSB18794M-93M fits 10" hub and drum assemblies as well as the same mounting hole dimensions as the Uni-Servo Dexter Hydraulic Trailer Brake Kit # 23-312-313. This means that you definitely can replace them with the Duo-Servo kit. The Demco Duo-Servo kit is perfect if you have a boat trailer. The galvanized backing plates, stainless steel spring hardware, zinc-plated wheel cylinders will do a much better job at ressisting rust and corrosion from...
    view full answer...
  • Comparing Free Backing and Duo Servo Hydraulic Brake Assemblies
    Good questions. The difference between free backing brakes like the # AKFBBRK-35-D and regular hydraulic drum brakes like # DMSB18794M-93M (referred to as duo or duel servo) is that the wheel brake cylinder has pistons on both sides of the regular/duo servo brakes instead of just the one side on the single servo free backing assemblies. The amount of braking doesn't change much between them, they just function differently yet under the same amount of hydraulic pressure. The duo servo...
    view full answer...
  • Galvanized Surge Brake Actuator and Brake Assembly for a 3,500 lb Axle
    The Dexter Zinc-Plated Brake Actuator part # 099-175-00 would be an excellent surge actuator. This has a 7,500 lb capacity. This model does not have a lockout feature, but one could easily be added with the part # T4748800 so that your trailer could be backed-up without the brakes activating. For 10 inch brake assemblies the part # DMSB18794M would be great for the left hand side of your trailer, for the right hand side you would want the part # DMSB18793M. I also attached an FAQ article...
    view full answer...
  • Are Drums Included with Demco Hydraulic Brake Kit for 3.5K Axles # DMSB18794M-93M
    No, the brake drums are sold separately from Demco Hydraulic Brake Kit # DMSB18794M-93M. The reason is that not everyone needs to replace both the brake assemblies and the drums. There are also at least 5 different bolt patterns for the hub and drum assemblies for 3500 pound axles. The most common bolt pattern is 5 on 4-1/2 so in that pattern for hydraulic brake drums you could use # T1543900CB042 which is sold in quantities of 1.
    view full answer...
  • How To Determine If Your Trailer Has Free-Backing Brake Assemblies When Replacing a Surge Coupler
    To find out if you have free backing brakes, there are really only two ways I can think of to test. First, if your coupler works, you can push your surge coupler to move your trailer in reverse. If the brakes apply, then you know you do not have free backing brakes. If you can move it easily, then your brakes are free backing. If your coupler is broken and thus the reason you are replacing then you will need to go to the second testing option. You will need to pull one of your hubs...
    view full answer...
    Image 1 for
  • Replacement Brake Pads and Wheel Cylinder for 10 Inch Hydraulic Brake Assemblies on Boat Trailer
    Recommending replacement components like brake pads and a wheel cylinder for a hydraulic brake assembly without knowing who manufactured it would be very difficult. Are there any part numbers or manufacturer information on them? Without any manufacturer information, your best bet would be to simply replace the entire assembly. This way, you'll have all new parts and you'll know your brake assemblies will be good to go for a few years. For a boat trailer, I'd recommend using galvanized...
    view full answer...
  • Replacement Parts For Surge Drum Brake Actuator
    I will be able to help you with the parts you need based on your axle capacity. Your axles are rated at 3,200 lbs. You will need the following items for your surge brakes. You have a hydraulic brake actuator. If you are using a 2" ball with your boat trailer, you can replace your existing actuator with the Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 6,000 lbs, part # DM8609101. While it is rated for 6,000 lbs, if your trailer is only rated for 4,000 lbs, you must adhere to...
    view full answer...
  • Recommended Replacement Drum Brakes for Boat Trailer with 3500-lbs Axles
    I recommend using the Hydraulic Brake Kit - Uni-Servo - Free Backing - Dacromet - 10" - Left/Right Hand - 3,500 lbs # AKFBBRK-35-D, which will work with your current setup and are perfect because the Dacromet plating is designed to withstand exposure to water; so they're ideal for boat trailers. These brakes are free backing, so they'll allow your trailer to backup regardless of whether or not you've got a lockout feature on your actuator, and they'll work with a breakaway kit. If you've...
    view full answer...
  • How to Locate Installer for Blue Ox Base Plate on 2012 Honda CR-V
    In order to find locations for the installation of the Blue Ox Base Plate Kit - Removable Arms # BX2258 on your 2012 Honda CR-V you can either follow the link at the bottom of this page, or use the "Locate installers near me" link on the actual product page. In addition to the base plate kit you will need the following to flat tow your vehicle: -Blue Ox Alpha 2 Non-Binding Tow Bar - Motorhome Mount - 2" Hitch - 6,500 lbs # BX7380 -Roadmaster Tail Light Wiring Kit with Bulbs # RM-155 -Roadmaster...
    view full answer...

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Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Written by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B

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