Air Cartridge Repair - Graco PerformAA 15 Instructions - Parts Manual

Repair

Air Cartridge Repair

1. Follow the Pressure Relief Procedure, page 15.
2. Loosen the air cartridge assembly (21) from back of
the gun body with the gun tool (29).
3. Slide air cartridge assembly (21) out of gun.
4. Disassemble the parts. See F
a. Pull the air valve assembly (21a) and spring
(21b) from the cartridge enclosure (21d).
b. Remove the cartridge enclosure o-ring (21c).
c. Loosen setscrew (12h) and remove the fan
adjustment knob (21g).
d. Remove the fan valve retaining ring (21j) with a
pick.
NOTE: Use an hex wrench to press the fan valve
assembly up to access the retaining ring (21j).
e. Push the fan valve assembly (21e and 21f) out
of the cartridge enclosure (21d).
f. Loosen the fan adjustment nut (21e) to separate
the fan valve stem (21f), and remove the fan
valve seal (21k) with a pick.
5. Replace the air cartridge parts and rebuild.
32
. 47.
IG
a. Place the replacement fan valve o-ring (21k)
onto the fan valve stem (21f). Thread the fan
adjustment nut (21e) onto the stem (21f).
Lubricate the o-ring (21k).
b. Push the assembled fan valve (21e and 21f)
into the cartridge enclosure (21d).
c. Use a pick to press the retaining ring (21f) into
place on the fan valve stem (21j).
d. Place the fan adjustment knob (21g) onto the
cartridge enclosure (21d) and tighten the set
screw (21h) with a hex wrench.
NOTE: The setscrew is below flush when it is installed
correctly.
e. Install an o-ring (21c) onto the cartridge
enclosure (21d).
f. Insert air valve (21a) into the spring (21b), and
press the spring (21b) into the cartridge
enclosure (21d).
6. Follow the U-Cup Replacement Procedure,
page 31.
7. Lubricate the air cartridge tip, and thread into the
back of the gun. Torque to 175-185 in-lb (20-21
N•m). See F . 42.
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3A8099A