Replacing Air Valve - DeVilbiss ADVANCE HD Series Manual

Replacing Air Valve

Reasons to replace air valve:
A) Air leak through the gun.
B) Air valve not operating correctly.
1. Remove trigger using (47) or TORX (T20) key
provided in the kit. (See figs 13 & 14)
2. Unscrew air valve using 14mm spanner (59).
(See fig 15)
3. Remove air valve by gripping the stem. (See fig
16)
4. Remove spring with spring pad. (See fig 17)
5. Hook out rear seal using Service Tool (56). (See
figs 18 & 19)
6. Clean air valve bores in gun body with the brush
supplied in the kit.
7. Place new rear seal onto Service tool (56);
grooves must fit in service tool form. (See fig 20)
8. Push rear seal firmly into hole up to shoulder,
using Service tool. (See figs 21 & 22)
9. Insert new spring, ensuring the end with the
plastic bearing pad goes in first. (See fig 17)
10. Insert air valve assembly into gun and carefully
feed over the spring and through the rear seal.
(See fig 23)
11. Tighten air valve assembly using fingers first, and
then tighten with 14mm spanner (59). (See figs
24 & 15)
12. Replace trigger. (See figs 14 & 13)
10
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