Lippert Components Trailer Axle (8-12K) - Manual (Page 11)

Rev: 04.18.2014
Page 11
Trailer Axle 8-12K Owners Manual FULL
Electric Brakes
The basic structure of the Electric Brakes on your trailer will resemble the brakes on your car or tow vehicle,
with one major difference; your trailer implements an Electric Actuation system and your tow vehicle utilizes
a hydraulic system. The Electric Braking System operates in the following order of steps: (Refer to the Electric
Braking System Diagram and the brake diagram below to follow along.)
1. Electric current is supplied to the trailer’s braking system when the tow vehicle’s brakes are applied.
2. From the tow vehicle’s battery, the electricity flows to the brake’s electromagnet.
3. When energized the magnets are attracted to the rotating surface of the drums.
4. This moves the actuating levers in the direction the drums are turning.
5. The actuating cam at the end of the shoe forces the primary shoe out to the drum surface.
6. The force of the primary shoe actuates the secondary shoe to contact the drum.
7. The force applied to the brake drum can be increased by elevating the current flow to the magnet.
Callout Description
A Primary Shoe
B Actuating Lever
C Adjuster
D Magnet
E Adjusting Spring
F Secondary Shoe
G Retracting Spring
A
B
C
D
E
F
G
Fig. 5