Free-backing, driver's-side trailer brake assembly won't engage when you reverse, even if your hydraulic actuator is activated. Galvanized steel resists rust, making the assembly great for boat trailers. Mounting flange has 4-bolt pattern.
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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 Demco free-backing brake assembly has a fall-away shoe that is designed to provide full braking action when your trailer is moving forward and to supply only limited friction when the trailer is moving in reverse. This is largely due to the incorporated dual springs at the shoe's pivot point. (One spring sits on either side of the shoe lever, so only a single spring is visible when looking at the brake assembly.)
When your rig is moving forward and you engage the trailer brakes, the fall-away shoe expands normally, with the leading edge of the shoe catching the drum. This occurs because the plunger on the hydraulic cylinder pushes on the shoe lever, forcing the leading edge of the brake shoe into the drum. Once that edge catches, the dual springs at the shoe's pivot point facilitate braking by forcing the rest of the shoe to pivot into the drum. The action of the shoe against the drum provides the friction required for braking.
When you are driving in reverse, however, the hydraulic cylinder and the springs work against one another. Even though the plunger pushes on the shoe lever, the dual springs of the fall-away shoe overcome the pressure from the brake cylinder, keeping the leading edge from catching on the drum and ensuring that the shoe does not fully pivot into the drum. Because the shoe makes only slight contact with the drum, just enough friction is generated so that only a minimal amount of braking occurs when you are in reverse.
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Easy to install.
fit easy
Great break....
Great Product Great Price
Fast order great product and price
Haven't installed but everything looks great. Great delivery'
Fast shipment and item worked great!
everything correct
Great product with excellent service!i
NICE PACKAGE. WELL WORTH THE $
Very pleased with deliver and service.
No issues with the install
Great product and super price
Good product that works as it should
Just what we ordered. Thanks
:) It was great doing business with your company..
Fast service Great to deal with
1 CLASS SERVICE AND COMMUNICATION.GREAT PRODUCT AND ALOT OF USEFULL INFORMATION ON YOU WEBSITE.
Bolted right up, stops like new again!
Great product!! Just as advertised.
exact fit,wish I would of bought new drums while I had it apart
Much fast and better than rebuilding the worn out assembly! bolt on and done!
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