Centerline Component Removal - Graco 295530 Operation, Parts, Service And Repair

Centerline Component
Removal
Refer to Figure 2 to view centerline com-
ponents.
1. Perform Pressure Relief Procedure (page
16) and Clean Spray Gun Procedure, page
21.
2. Remove air cap by hand, turning it counter-
clockwise.
3. Remove screen screw assembly. Flush
and place in gun cleaner.
4. Remove check valves. Flush and place in
gun cleaner.
5. Flush screen screw and check valve ports.
6. Remove spring retainer case by firmly
grasping knob of case. Push in and rotate
counterclockwise to remove from air cylin-
der. Pull spring out of air cylinder.
7. Loosen felt wiper retainer 2-3 turns. DO
NOT REMOVE.
8. Remove valving rod. Push back firmly on
piston rod until end of valving rod stop bar
emerges from cylinder.
9. Remove gun block from frame.
10. Unscrew felt wiper assembly from rear of
mixing chamber. Keep rear of mixing
chamber in upright position to prevent pos-
sible loss of internal chamber parts. Ensure
brass retaining sleeve is not stuck to felt
wiper. Place wiper assembly in gun
cleaner.
11. Remove mixing chamber. Hold gun block in
one hand with chamber tip pointing into
your palm. Insert mixing chamber knockout
311320J
tool into rear of gun block and tap with
hammer until chamber ejects. Place cham-
ber in gun cleaner.
Chamber
Knockout
Tool
F . 22: Mixing Chamber Removal
IG
CAUTION
Matching tapers on mixing chamber and
center hole in gun block are machined to an
exact fit to hold chambers in place and cre-
ate a leak-proof seal. When handling or
cleaning these parts be careful not to dam-
age finish. Do not use metal tools to clean
these parts.
12. Remove closure screw in top of gun block.
Place screw in gun cleaner and clean
entire gun using appropriate cleanout tools
and brass brushes. Then flush thoroughly
with gun cleaner.
13. Disassemble check valve assemblies.
Screw
F . 23: Check Valves
IG
Repair
Mixing Chamber
Sleeve
Ball and Spring
25