Electrode Replacement - Graco WB3000 Instructions - Parts Manual

Do not overtighten the fluid seat housing (24).
Overtightening may damage the housing and
the gun barrel, resulting in improper fluid
shutoff.
6. Trigger the gun and install the fluid seat housing
(24). Tighten until snug, then 1/4 turn more.
7. Check that the spray tip gasket (27a) is in place.
Align the spray tip tab with the groove in the air
cap (25). Install the spray tip (27) in the air cap.
8. Make sure that the electrode (25a) is installed
correctly in the air cap.
9. Check that the air cap o-ring (25b) is in place.
10. Check that the u-cup (22a) is in place on the
retaining ring (22). The lips of the u-cup must
face forward.
To avoid damaging the tip guard, orient the
air cap assembly (25) before tightening the
retaining ring (22). Do not turn the air cap
when the retaining ring is tight.
11. Orientate the air cap and tighten the retaining
ring securely.
12. See Test Gun Resistance, page
3A2497C
NOTICE
NOTICE
36.

Electrode Replacement

NOTICE
For best performance and to avoid potential
damage to the spray gun, do not operate the spray
gun without the electrode installed in the air cap.
1. See Prepare the Gun for Service, page
2. Remove the air cap assembly (25). See
Air Cap, Spray Tip, and Fluid Seat Housing
Replacement, page
3. Pull the electrode (25a) out of the back of the air
cap, using a needle-nose pliers.
4. Push the new electrode through the air cap hole.
Make sure the short end (BB) of the electrode
engages the hole (CC) in the back of the air
cap. Press the electrode in place firmly with your
fingers.
5. Install the air cap assembly.
6. See Test Gun Resistance, page
Figure 26 Replace Electrode
Repair
47.
48.
36.
49