Graco HA1M10, Instructions-Parts List Manual

Page: 30 / 48

Repair
30 333011D
12. Install the shroud.
13. Orientate the air cap and tighten the retaining ring
securely.
14. See Test Gun Resistance , page 22.
Electrode Replacement
1. See Prepare the Gun for Service , page 28.
2. Remove the air cap/tip guard assembly (25). See
Air Cap/Tip Guard, Spray Tip, and Fluid Seat
Housing Replacement
, page 29.
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 22.
Fluid Tube Replacement
There are no replaceable parts in the fluid tube assem-
bly. Only remove when necessary.
1. Prepare the gun for service, page 28.
2. Remove the air cap assembly, page 29. Remove
the shroud (26).
3. Disconnect the bottom fluid tube nut (C). See F
IG
-
URE
25.
NOTE: Use two wrenches to remove the fluid tube fitting
(C).
4. Carefully unscrew the top fluid tube nut (D).
5. Apply Part No. 116553 dielectric grease to the entire
length of the plastic extension on the end of the fluid
tube (35).
6. Apply low strength thread sealant to the fluid tube
nut threads.
7. Install the fluid tube into the gun barrel and tighten
the top nut (D) hand-tight, then 1/4 to 1/2 turn with a
wrench. There will be a gap between the nut and
barrel. Do not over tighten the nut.
8. Make sure the fluid filter (34) is in place. Tighten the
bottom fluid tube nut (C) onto the fitting (32) and
torque to 20-30 in-lb (2.3-3.4 N•m). Make sure the
top nut remains tight.
NOTE: Use two wrenches to install the fluid tube fitting
(C).
9. Reinstall the shroud and air cap assembly, page 29.
10. Test gun resistance, page 22.
NOTICE
To avoid damaging the tip guard, orient the air
cap/tip guard assembly (25) before tightening the
retaining ring (24). Do not turn the air cap when the
retaining ring is tight.
Installing and repairing this equipment requires
access to parts that may cause electric shock or
other serious injury if the work is not performed
properly. Do not install or service this equipment
unless you are trained and qualified.
25a
CC
BB
ti19524
NOTICE
Be careful not to damage the fluid tube assembly (35)
when cleaning or installing it, especially the sealing sur-
face (E). If the sealing surface is damaged, the entire
fluid tube assembly must be replaced.
F
IG
. 25 Fluid Tube Replacement
C
D
E
34