Air
Air
Air Cap
Cap
Cap and
and
and Nozzle
Nozzle
Nozzle Replacement
Replacement
Replacement
NOTICE
NOTICE
NOTICE
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.
1.
Follow the steps in
Prepare the Gun for Service, page 48
2.
Remove the retaining ring (6) and air cap (5).
3.
Trigger the gun while removing the fluid nozzle
(4) assembly with the multi-tool (41).
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. Never operate the gun without
the contact ring in place. Do not replace the
contact ring with anything but a genuine Graco
part.
Note
Use non-silicone grease, Part No.
111265, on the small o-ring (4b). Do
not over-lubricate. Do not lubricate the
conductive contact ring (4a). Excessive
grease can mix with paint and blemish
the finish on the workpiece.
4.
Make sure the conductive contact ring (4a) and
the small o-ring (4b) are in place on the nozzle
(4). Lightly lubricate the small o-ring (4b).
Note
The conductive contact ring (4a) may
show some wear at the point where
it makes contact with the barrel pin.
This is normal and does not require
replacement.
5.
Make sure the electrode needle (3) is finger-tight.
6.
Trigger the gun while installing the fluid nozzle
(4) with the multi-tool (41). Tighten until the fluid
nozzle seats in the gun barrel (1/8 to 1/4 turn
past hand-tight).
7.
Install the air cap (5) and retaining ring (6). Make
sure the u-cup (6a*) is in place with the lips facing
forward.
Figure 20 Air Cap and Nozzle Replacement
3A7504A
49
