Air Cap/Nozzle Replacement - Graco PRO Auto Xs Series Instructions-Parts List Manual

Repair

Air Cap/Nozzle Replacement

CAUTION
Hold the front end of the gun up and trigger the gun
while removing the nozzle to help drain the gun and
prevent any paint or solvent left in the gun from enter-
ing the air passages.
1. Prepare gun for service, page 32.
2. Remove the retaining ring (1) and air cap (3). See
F 21.
IGURE
3. Point gun up while removing the fluid nozzle (4)
assembly with the multi-tool (40).
Fig. 21. Air Cap/Nozzle Replacement
34
1, 3
40
4
7
4
4a
4b
TI1572A
Fire, Explosion, and Electric Shock Hazard
The nozzle contact ring (4a) is a conductive
contact ring, not a sealing o-ring. To reduce
the risk of sparking or electric shock, do not
remove the nozzle contact ring (4a) except
to replace it and never operate the gun
without the contact ring in place. Do not
replace the contact ring with anything but a
genuine Graco part.
Use non-silicone grease, Part No. 111265, on the small
o-ring (4b). Do not over-lubricate. Do not lubricate the
contact ring (4a).
4. Lightly lubricate the o-ring (4b). Install it and the
contact ring (4a) on the nozzle (4).
Make sure the electrode needle (7) is finger- tight (page
35).
1
5. Install the fluid nozzle (4) with the multi-tool (40).
Tighten until the fluid nozzle seats in the gun barrel
(1/8 to 1/4 turn past hand-tight).
6. Carefully install the air cap (3). Be sure to insert the
1a
electrode (7) through the center hole of the air cap.
Rotate the air cap to the desired position.
7. Make sure the u-cup (1a) is in place on the retaining
3
ring (1). The lips must face forward. Tighten the
retaining ring until the air cap is held firmly in place;
you should not be able to rotate the air cap horns by
hand.
8. Test gun resistance, page 26.
9. Install the gun onto the manifold and bracket. See
page 33.
WARNING
309297K