User's Manual

Gun Repair
30 313227C
Replace Air Cap/Nozzle
1. Prepare gun for repair, page 28.
2. Remove the charging probe (2), see page 9.
3. Remove the retaining ring (1), air cap (3), and gun
shroud (48).
4. See F
IG. 22. Point gun up while removing the fluid
nozzle (4) assembly with the multi-tool (37).
NOTE: Use non-silicone grease, Part No. 111265, on
the small o-ring (4b). Do not over-lubricate. Do not lubri-
cate the contact ring (4a).
5. Lightly lubricate the o-ring (4b). Install it and the
contact ring (4a) on the nozzle (4).
6. Make sure the electrode needle (7) is finger-tight
(page 31).
7. Trigger gun while installing the fluid nozzle (4) with
the multi-tool (37). Tighten until the fluid nozzle
seats in the gun barrel (1/8 to 1/4 turn past
hand-tight).
8. Install the gun shroud (48), air cap (3), and retaining
ring (1). Make sure the u-cup (1a*) is in place with
the lips facing forward.
9. Install the charging probe (2), see page 9.
10. Test gun resistance, page 22.
NOTICE
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 entering the air passages.
FIG. 22. Replace Air Cap/Nozzle
1, 3
3
4
1a
4b
4a
37
TI13434a
1
4
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.