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5.2.12 SUSPENSION SYSTEM
(cont'd)
5.2.12.1 AIR RIDE SUSPENSION (cont'd)
5.
Dump Valve:
All air control systems are equipped with a dump
valve that allows the operator to exhaust the air
from the system as required.
a. Always dump the air when parking the trailer
and before unhooking.
b. Dumping the air when unloading is not
recommended.
6.
Air System Control Box:
All air control systems are equipped with valve(s).
There can be multiple configurations depending
on the options the trailer(s) was built with.
Relay Valve only on Trains
Fig. 65 DUMP VALVE
Fig. 66 AIR SYSTEM CONTROL BOX
Full Function Valve and ECU Valve