Trailer Electric Brake Parts

Electric drum brakes have become the industry standard on utility trailers and
flatbeds, typically meeting moderate load capacities while being regularly towed.

To prevent interference between vehicle lighting and brakes, circuits must be as
isolated as possible (Kirchhoff’s circuit laws). This requires using an independent
electric brake trailer connector as well as dedicating a ground pin in your trailer wiring system for brakes.

Brake Shoes

Brake shoes are essential components in both drum and disc brake systems. Lined
with automotive-grade friction material, when activated they press outward against
the inside of the brake drum creating friction needed for braking.

As soon as the magnet arm is released, both brake shoes will move back towards
their resting positions.

However, for optimal braking safety it’s wise to change out their brake pads
regularly or when they reach certain wear limits, to ensure proper and safe braking performance.

Brake Drums

Brake drums combined with brake shoes form a friction system to decelerate trailer
wheels as they spin. Multi-axle trailers must always include brakes on all axles for safety reasons.

When the driver presses their brake pedal in their vehicle, their power is amplified
by a brake booster before being converted into hydraulic pressure delivered via
tubing from a master cylinder to each wheel’s brake caliper via tubing from another
master cylinder. When these pistons expand they press one or more brake pads
against an aluminum or iron disc that slows the car. This friction between pads and
disc causes friction which slows it further.

Electric over hydraulic drum systems typically utilize a uni-servo wheel cylinder
[single push rod]. Hydraulic pressure from this cylinder generates levered force
between primary and secondary shoes that push them against the inner surface of
the drum, with return springs retracting the shoes when not needed for brake use.

Trailer Electric Brake Parts

Brake Controllers

A trailer brake controller attached to the towing vehicle sends signals to
electromagnets on the trailer that control electricity flow to its brakes for responsive
braking. Some controllers offer manual or proportional modes while others feature
dials that let users adjust braking force, commonly known as gain.

A voltmeter can help you quickly check system voltage in any brake’s magnet lead
wires. Make sure the towing vehicle engine is running when conducting this check to
avoid an impact from low battery readings. If an amperage reading exceeds
expectations, consider possible problems like faulty controllers or exposed wires
which could contact a grounded object and create short circuits.

Curt Echo, a tech-friendly option, connects seamlessly to a trailer’s seven-pin
connector and communicates wirelessly with smartphones via Bluetooth, making for
an affordable yet user-friendly solution for drivers prioritizing convenience and
simplicity. Ross notes both manufacturers are constantly innovating their offerings to meet consumer expectations.

Brake Hoses & Fittings

If you plan to install electric brakes on your trailer, you will require brake hoses and
fittings to complete the task. At JEGS, our expert staff are on hand to answer your
queries and find you exactly the parts for your project.

This hydraulic hose is commonly found on trailers equipped with disc or drum
brakes. Installation is straightforward; simply connect its tee end to the brass brake
adapter fitting in the rear of the master cylinder and secure with screws, while its
third/16 inverted flare connection fits onto brake coupler master cylinder threads –
this connector type can even be found on quality axles!

This hose has been marked with two torque stripes at both ends to indicate it has
passed the SAE 106 and J1401 requirements for hydraulic brake hoses. To complete
this test, the hose was immersed for an indefinite amount of time in water to ensure
it will not collapse under pressure.

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