Repair
333011D
29
Install the Gun on the Manifold
See F
IGURE
20.
1. Make sure the five o-rings (18) are in place on the
gun. Inspect the parts for damage and replace them
as needed.
2. Secure the gun to the manifold by tightening the two
screws (21).
3. Reconnect the fluid hose to the manifold.
Air Cap/Tip Guard, Spray Tip,
and Fluid Seat Housing
Replacement
1. See
Prepare the Gun for Service
, page 28.
2. Remove the retaining ring (24), shroud (26) and air
cap/tip guard assembly (25).
3. Remove shroud (26).
4. Disassemble the air cap assembly. Check the con-
dition of the u-cup (24a), o-ring (25b), and tip gasket
(3a). Replace any damaged parts.
5. To replace the electrode (25a), see
Electrode
Replacement
, page 30.
6. Remove the fluid seat housing (4) using the
multi-tool (48).
7. Install the fluid seat housing (4). Tighten until snug,
then 1/4 turn more.
8. Check that the spray tip gasket (3a) is in place.
Align the spray tip tab with the groove in the air cap
(25). Install the spray tip (3) in the air cap.
9. Make sure that the electrode (25a) is installed cor-
rectly in the air cap.
10. Check that the air cap o-ring (25b) is in place.
11. Check that the u-cup (24a) is in place on the retain-
ing ring (24). The lips of the u-cup must face for-
ward.
F
IG
. 21 Remove Air Cap
F
IG
. 22 Disassemble Air Cap Assembly
F
IG
. 23 Tip Gasket
24
25
26
WLD
3
25a
24
24a
40b
25
WLD
3a
The conductive ring (33) is a conductive metal
contact ring, not a sealing o-ring. To reduce the risk
of fire, explosion, or electric shock:
• Do not remove the conductive ring except to
replace it.
• Never operate the gun without the conductive ring
in place.
• Do not replace the conductive ring with anything
but a genuine Graco part.
F
IG
. 24 Seat Housing Replacement
NOTICE
To avoid damaging the seat housing and gun bar-
rel, never over tighten the seat housing. Over tight-
ening may affect the fluid shutoff.
48
