Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Demco Single-Servo 10" x 2-1/4" Galvanized Hydraulic Brake Assembly for Boat Trailers
Features:
Specs:
Video of Galvanized 10" Marine Brake Assembly, Single Servo, Right Hand
Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Today, we're looking at the Demco Galvanized 10" Marine Brake Assembly, part number 18787. This assembly is set up for the right-hand side. The way we can tell this by looking at the shoe lining itself. The forward shoe is going to be smaller than the rear shoe lining or primary shoe lining. This is a single servo setup, which means there is one wheel cylinder and one piston that comes out, creating a wedge effect inside the hub drum assembly. To tell the measurement of our shoe for setup, we simply measure across the linings and see that we get 10" in our width.
And then the thickness of the width of the shoe lining itself is 2-1/4". So this is a 10" x 2-1/4" setup. When we take this setup and couple it with the left-hand side, we create 3,500 pounds in braking capacity. This setup also produces 20% braking capacity in reverse. When bolting up to our axle, we have 4-on-4 bolt up holes drilled to bolt up to the axle.
This is 4-on-4 centers. You see the holes are pretty drilled into the backing plate to go on to the axle-mounting (plank). On your initial setup, you use a star wheel adjusted to just the shoe linings out to meet the hub drum surface. You want to create a light drag on your initial setup. Then as the shoe linings wear down, you can simply remove the access plug here in the backing plate and adjust the star wheel adjuster out to keep that light drag as the shoe linings wear down.
And there you have it for our Demco Galvanized 10" Marine Brake Assembly, part number 18787.
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Average Customer Rating: 
5.0 out of 5 stars (2 Customer Reviews)
by: Bobby03/22/2013
Is this review helpful?
Good price and bolted up perfect! Etrailer.com has great prices and fast shipping when you need your parts fast. This is the 3rd complete trailer rebuild and I wouldn't think about buying from any other supplier. Bobby M. Maryland71814
by: BJ R04/25/2012
Is this review helpful?
Perfect fit. Just with it came with nuts and bolts.38408
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