page 8
TD-24-T (5+20)
®
Operation
1.6
Uncaging Air Brakes
Air brakes are designed with a safety feature called a spring brake, so that if no air
pressure is present in the system springs will apply force to the brake system linkages
and apply the brakes. To allow the trailer to be moved during shipping a caging key is
installed in each of the spring brake cans to prevent the brakes from being applied.
These keys MUST be removed before the trailer can be put into service.
INOPERATIVE BRAKE SYSTEM!
The spring brake caging keys must be removed from the spring brake
cans before the trailer is put into service. The brake system WILL NOT
FUNCTION with the keys installed, and the trailer will roll freely until they
are removed.
To remove the keys use the following procedure (see illustration on next page):
1. Hook up trailer to tow vehicle, and/or put air to the air brake system on the trailer.
2. Apply approximately 70 psi of air pressure to the brake system; this should be
sufficient to remove the spring pressure and loosen the caging keys.
3. Hold the key and turn the washer behind it until the slots on the washer line up
with the key.
4. Push the key in and turn it approximately
1
/
4
turn and pull out.
5. Cover the key hole with the attached rubber seal.
6. Repeat this procedure for all spring brake cans.
WARNING
!
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...