Barrel Installation; Install The Gun Onto The Manifold - Graco PRO 5500wb Instructions-Parts List Manual

Barrel Installation

1. Be sure the gaskets (20, 27a) and spring (11) are
in place. See Fig. 39. Replace the parts if they are
damaged.
2. Place the barrel (26) over the power supply (27)
and onto the gun body (29). Make sure the fluid
needle spring (11) is seated properly.
3. Install the fluid tube (17) into the gun body (29).
4. Using the ball end wrench (77–not shown), tighten
the three screws (24) oppositely and evenly to 18
in-lbs (2 NSm) maximum (about a half turn past
snug); do not over-tighten the screw.
CAUTION
To avoid damaging the gun, do not over-tighten the
screws (24).
5. Install and adjust the actuator arm (19) and jam
nut (46) as instructed on page 40.
6. Test the gun resistance as instructed on page 33.
7. Part No. 238091 Spray Gun: Connect the air pilot
line to the fluid regulator fitting.


Tighten the screws (24) to 18 in-lbs (2 NSm) maximum (about half
turn past snug), using the wrench (77) provided.

Install the nut (46) flush to the end of the piston rod (23g).
27a
27
20


24
26
13
11
Fig. 39
44 308496
Service
29
17

36
23g
19

46
04318

Install the Gun onto the Manifold

1. Make sure the gaskets (121, 108) and the spring
(105) are on the manifold (101). See Fig. 41, page
45. Inspect the parts for damage and replace as
needed.
2. Make sure the fluid hose PTFErtube (A), which
inserts into the gun, and the gun fluid tube (17)
opening are clean.
If the parts are dirty, clean them and apply a light
coat of the dielectric grease to the entire length of
the PTFE tube (A). Keep the fluid tubes free of
contaminants during assembly.
CAUTION
If the PTFE tube (A) or the gun fluid tube (17)
become contaminated, a conductive path may be
created, which may short out the gun. Keep these
parts free of contaminants.
3. Inspect the condition of the o-rings (C) on the fluid
hose barbed-fitting. See Fig. 40, page 45. Replace
the o-rings if they are worn or damaged.
4. Align the gun (B) and slide it onto the PTFE tube
(17) until the gun meets the manifold (101). See
Fig. 41.
5. Secure the gun (B) to the manifold (101) by tight-
ening the three screws (106) with the ball end
wrench (77–not shown).
6. Secure the gun (B) to the mounting bracket (102)
by tightening the screw (21) with the ball end
wrench (77).