Air Dryer - Chevrolet kodiak 2004 Owner's Manual

Air Brake Systems
If your vehicle has air brakes, it is important to get rid of
moisture in your system. Moisture will damage your
system if it is not removed daily.
There are two ways to do this. One is automatic if your
air-brake vehicle has the optional moisture ejector. If
your vehicle does not have that option, you must drain
the air reservoirs occasionally to be sure the air
dryer is working properly.
Drain the air brakes at full system pressure. To be sure
you are at full pressure, check your air pressure
gage. It should read at least 100 psi (692 kPa).
5-50
Moisture Ejector
If you have air brakes with a moisture ejector, the valve
automatically ejects moisture from the reserve tank
when the air compressor cycles.

Air Dryer

If your vehicle has air brakes, it may have an air dryer.
This collects and removes dirt, moisture or other
foreign matter from the air prior to entering the brake
system. It is mounted on the passenger's side frame rail.
If your dryer is a Bendix-Westinghouse, it has a filter
that you need to change at intervals. See Scheduled
Maintenance on page 6-5 for more about servicing this
filter.