Electrode Replacement; Fluid Needle Replacement - Graco 333013B Instructions - Parts Manual

Repair
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.
11. Orientate the air cap and tighten the retaining ring
securely.
12. See Test Gun Resistance, page 29.

Electrode Replacement

1. See Prepare the Gun for Service, page 38.
2. Remove the air cap/tip guard assembly (25). See
Air Cap/Tip Guard, Spray Tip, and Fluid Seat
Housing Replacement, page 39.
3. Pull the electrode (25a) out of the back of the aircap,
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 29.
25a
40
CC BB
ti19524

Fluid Needle Replacement

1. Prepare the gun for service, page 38.
2. Remove the air cap/tip guard assembly and seat
housing, page 39.
3. Remove the barrel (1), page 42.
4. Remove the spring cap (31) and the spring (5) from
the barrel. See F
IGURE
5. Be sure the seat housing (4) is removed. Place the
2 mm ball end wrench (45) in the back of the fluid
needle assembly. Push the tool in and turn it coun-
terclockwise about 12 full turns to unthread the nee-
dle.
6. Using the multi-tool (48), pull back on the packing
nut (N) to remove the fluid needle assembly. See
F 31.
IGURE
7. Install the fluid needle assembly in the gun barrel.
Push in on the needle with the 2 mm ball end
wrench (45) and tighten. See F
8. Install the spring (5).
9. Install the spring cap (31), making sure the ground-
ing spring (6) is in place. Tighten until snug. Do not
overtighten.
10. Install the barrel (1), page 43.
NOTICE
To avoid damaging the seat housing and gun barrel,
never overtighten the seat housing. Overtightening
may result in improper fluid shutoff.
11. Install the seat housing and air cap, page 39.
12. Test Gun Resistance, page 29.
F . 30 Spring Cap and Springs
IG
30.
32.
IGURE
6
31
5
333013B