Graco PRO AA5500sc unicarb Instruction Manual page 32

Prepare the Gun for Service (continued)
4. Remove the retaining nut and air cap assembly (1,
12, 13, 15) and the gun shroud (2). See Fig. 28.
You may have to turn the air cap with the tip guard
to remove the air cap from the gun.
5. Disconnect the fluid hose from the fluid inlet fitting
(3–marked P1 on the manifold). Use an open end
wrench to hold the fluid fitting hex and prevent it
from turning.
6. Loosen the bottom gun screw (21) until the gun (B)
sits loosely in the mounting bracket slot (A).
1, 12, 13, 15
Fig. 28
32 308937
Service
B
2
CAUTION
The piston return spring (105) is compressed
between the manifold (101) and gun body when they
are assembled. To avoid sudden movement of the
gun, loosen the bottom gun screw (21) before loos-
ening the three manifold bolts (106). This allows the
gun to move forward gradually as the manifold bolts
are loosened. Hold the gun firmly in hand while
loosening the manifold bolts.
7. Holding the gun (B) firmly in hand, loosen the three
bolts (106) from the back of the manifold (101)
with the ball end wrench (77–not shown).
8. Remove the gun (B) from the manifold (101), and
take it to the service area.
105
A
3
21
106
101
102
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