page 38
TD-24-T (5+20)
®
2.8
Electric Brake System
Operation
The electric brakes on your trailer are similar to the drums brakes on your automo-
bile. The basic difference is that your automotive brakes are actuated by hydraulic
pressure while the electric brakes are actuated by an electromagnet. With all of the
brake components connected into the system, the brake will operate as follows:
1. When the electrical current is fed into the system by the controller, it flows through
the electromagnets in the brakes. The high capacity electromagnets are energized and
are attracted to the rotating armature surface of the drums which moves the actuating
levers in the direction that the drums are turning.
2. The resulting force causes the actuating cam block at the shoe end of the lever to
push the primary shoe out against the inside surface of the brake drum. The force
generated by the primary shoe acting through the adjuster link then moves the second-
ary shoe out into contact with the brake drum.
Retractor Spring
Actuating Lever
Backing Plate
Primary Shoe
Magnet
Adjuster Assembly
Adjuster Spring
Self-Adjusting Cable
Hold Down Washer
Secondary Shoe
Maintenance
Summary of Contents for TD-24-T(5+20)
Page 9: ...page 9 TD 24 T 5 20 Operation Spring Brake Chamber Rubber Seal Caging Key...
Page 59: ...page 59 TD 24 T 5 20 2 6 7 11 8 3 9 10 5 4 12 13 14 16 15 1 Parts P A R T S...
Page 61: ...page 61 TD 24 T 5 20 4 5 6 8 7 16 15 14 13 11 9 12 10 Parts P A R T S 3 2 1...
Page 63: ...page 63 TD 24 T 5 20 9 12 10 13 5 7 6 3 4 3 1 6 8 7 17 2 11 16 15 14 Parts P A R T S...
Page 67: ...page 67 TD 24 T 5 20 Parts P A R T S THIS PAGE LEFT BLANK INTENTIONALLY...
Page 69: ...page 69 TD 24 T 5 20 Parts P A R T S 5 6 6 7 8 9 10 12 11 4 3 1 2...
Page 71: ...page 71 TD 24 T 5 20 Junction Box shown for reference only Parts P A R T S 4 1 3 2 6 5...
Page 75: ...page 75 TD 24 T 5 20 Parts Detail shown on follow ing pages P A R T S 4 7 5 6 2 1 3 3...
Page 77: ...page 77 TD 24 T 5 20 Parts Hidden between ECU and tank P A R T S 15 5 15 20 19 18 4 21 15 6...