Pneumatic System 165
Figure 7-3
Air filter
To bleed the water trap, do the following:
1. Lock out and tag out the vehicle (see Locking Out and Tagging Out the Vehicle on page 12).
2. Using a rag, unscrew the drain cocks.
This will bleed all the water from the water trap and the air filter bowl located on the chassis. This
water trap helps keep residual moisture out of the body air system.
Figure 7-4
Bleeding the water trap
3. Drain all air tanks.
Bowl
Retaining collar
Water trap
bleed
Water trap
Particle filter
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