6
AIR VALVE REPLACEMENT
CLEANING
(Continued)
WIRE AND BALL ASSEMBLY AND SEAT REPLACEMENT
1. Engage the trigger safety.
2. Shut off fluid pump and disconnect its air or power
supply.
3. Release pressure from the entire fluid system, from
the pump to the spray gun.
4. Remove trigger (20) by removing the trigger stud
(13) and the trigger screw (12).
5. Remove air valve assembly (21).
6. Replace air valve assembly (21).
7. Reinstall trigger (20), trigger stud (13) and trigger
screw (12).
Refer to assembly drawing on page 7 to locate numbered
items.
1. Engage the trigger safety.
2. Shut off fluid pump and disconnect its air or power
supply.
3. Release pressure from the entire fluid system, from
the pump to the spray gun.
4. Remove tip guard assembly (1), air cap (2) and spray
tip (3). Remove trigger (20) by removing the trigger
stud (13) and the trigger screw (12).
5. Remove the AA4000 needle packing cartridge (8).
6. Carefully install new AA4000 needle packing
cartridge (8).
7. Remove fluid seat (4) and o-ring.
8. Install new fluid seat (4) and o-ring.
9. Reinstall trigger (20), trigger stud (13) and trigger
screw (12).
10. Reinstall air cap (2), spray tip (3) and tip guard
assembly (1).
11. Using a rag dampened with solvent, wipe the exteri-
or surface of the gun. Additionally, some solvents are
prohibited from being used for cleaning. The opera-
tor must take care to use only approved cleaning sol-
vents for equipment cleaning. These materials are
clearly labeled as approved for cleaning and wash off
operations. If the operator has any question on
selecting appropriate cleaning solvents, the operator
should consult a supervisor or plant environmental
staff.
ITEM
PART
NO.
NO.
DESCRIPTION
QTY.
1
54-4983
TIP GUARD ASSEMBLY .............. 1
2
54-4978
◆
AA4 AIR CAP
(Standard)
.............. 1
54-4980
AA2 AIR CAP
(Optional)
................ 1
3
113-0XXXX
CARBIDE TIP ASSEMBLY ............ 1
(See Tip Selection Chart, pg. 8)
4
54-4960*
FLUID SEAT
(Tungsten Carbide
........ 1
Standard or UHMW Optional, 54-4926)
4A
20-6037
■
O-RING........................................ 1
5
54-4906
FLUID TUBE ASSEMBLY.............. 1
6
54-4986
GUN HEAD ................................ 1
7
54-4923*
FRONT HEAD GASKET .............. 1
8
54-4963*
NEEDLE PACKING CARTRIDGE.... 1
(4,000 PSI Maximum)
9
—
GUN BODY
(Not Sold Separately)
10
54-4925
FLUID INLET NUT........................ 1
11
54-4977
FAN CONTROL ASSEMBLY ........ 1
12
54-4939
TRIGGER SCREW ........................ 1
ITEM
PART
NO.
NO.
DESCRIPTION
QTY.
13
54-4938
TRIGGER STUD .......................... 1
14
—
FLAT PLUG
(Not Sold Separately)
15
54-4947
FLUID TUBE BRACKET SPACER .. 1
16
54-4943
FLUID TUBE BRACKET................ 1
17
54-4975
▲
PUSH IN TUBE FITTING .............. 1
1/8" NPT(m) x 3/8" O.D.
18
20-6718
BUTTON HEAD CAP SCREW ...... 1
19
54-4944
●
FLUID INLET FITTING.................. 1
20
54-4937
TRIGGER...................................... 1
21
54-4909*
AIR VALVE ASSEMBLY................ 1
22
71-28
D.M. NIPPLE................................ 1
1/8" NPT(m) x 1/4" NPS(m)
23
54-4725
FILTER ASSEMBLY
(100 Mesh)
........ 1
◆
Also available: 20-6750-K10 (Kit of 10 O-rings for AA-4 Air Cap).
* Available as part of Repair Kit 54-4993.
■
Also available: 20-6037-K10 (Kit of 10 O-rings).
▲
Alternate Push-In Tube Fitting (17) is included in gun package.
●
Alternate Fluid Inlet Fitting (19)—order separately.
PARTS LIST
When ordering, please specify Part No.
(Not all part numbers are available for purchasing.)
