Graco 308181C Four-Finger Trigger Conversion Kit Owner's Manual

INSTRUCTIONS–PARTS LIST
308–181
Rev. C
Supersedes B
This manual contains important
warnings and information.
READ AND RETAIN FOR REFERENCE
Four-Finger Trigger Conversion Kit
Part Number 224–884
For use on the PRO4500 Electrostatic Air Spray Gun, part no. 224–200, to change from a two-finger trigger to a
four-finger trigger. See the other side of this form for the parts included with this kit.
Installation
6. Cut or grind off the finger tab (F) from the gun handle to allow room for the four-finger trigger. DO
NOT cut into the handle.
Installing the Conversion Kit
WARNING
Before beginning to install the conversion kit, turn
off the electrostatics to the gun and relieve all pressure in the system. This helps reduce the risk of
fire, explosion, or electric shock, which could cause
serious injury and property damage, and reduces
the risk of splashing fluid in the eyes or on the skin
if the gun is accidentally triggered.
7. Apply low-strength (purple) Loctite to the screw
(13) threads, then secure the finger tab (12) to the
trigger (1) with the screw.
PRO4500 Spray Gun with Two-Finger Trigger
Pressure Relief Procedure
1. Turn the ES Valve (electrostatics) OFF.
2. Turn off the air and fluid supply to the gun.
3. Trigger the gun into a grounded metal waste
container to relieve fluid pressure.
A
1. Loosen the screws (A) and remove the two-finger
trigger (B) from the gun. See Fig. 1.
M
B
2. Loosen the nut (C) and fluid inlet fitting (H) and
remove the fluid tube (D) from the gun.
F
G
3. Remove the ferrules (E) from the old tube.
D
NOTE: The ferrules can be reused with the new tube
or replaced with the ferrules supplied with the kit.
J
4. Remove the fluid inlet fitting (H) and o-ring (J).
5. Loosen the air adapter (K), then remove the fluid
adapter and bracket assembly (G), barb fitting (L)
and o-ring (M).
L
H
K
C
E
0848A
Fig. 1
Continued on other side
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1991, GRACO INC.
Installation
8. Install the four-finger trigger (1) with the screws
(A). See Fig. 2.
9. Install the o-ring (10) on the fluid inlet fitting (7).
Stretch the o-ring to start it over the fitting threads,
then thread it into place. Install the fitting on the
new fluid tube (8).
14. Install the air adapter (K) through the bracket (3).
Apply high strength Loctiter to the threads and
install the adapter into the gun handle (adapter has
left-hand threads). Torque the adapter to 35 to 45
in-lbs (4 to 5 NSm).
10. Install the nut (9) and ferrules (6) on the fluid tube
(8).
11. Assemble the tube to the new bracket (3). Make
sure the tube bottoms out in the fluid adapter.
Refer to Figs. 2 and 3.
12. Assemble the other end of the tube into the barrel
(N). See Fig. 2. Make sure the tube bottoms out in
the fitting. Torque the fluid inlet fitting to 25 to 35
in-lbs (2.8 to 4 NSm).
K
13. Install the o-ring (2) onto the barb fitting (4) and
install the barb fitting into the gun handle.
7
PRO4500 Spray Gun with Four-Finger Trigger
8
3
9
1
12
A
Install both ends of the fluid tube (8) before installing the
adapter (K).
Make sure the tube bottoms out in the fittings.
0850B
Fig. 3
12
13
1
2
The kit includes the following parts:
4
Ref.
No.
Part No.
Description
1
2
3
4
6
7
8
9
10
12
13
189–034.
106–555
236–120
188–878
110–077
186–621
224–910
110–079
102–982
189–023
112–324
TRIGGER, four-finger
O-RING, Vitonr
BRACKET, 4 finger
FITTING, barb
FERRULES, fluid tube
FITTING, barrel fluid inlet
TUBE, fluid
NUT, fluid tube
O-RING, PTFE r
TAB, finger
SCREW, mach.; 4–40 x 0.25”
N
3
8 10
K
7
9
6
Torque fitting to 25–35 in-lbs (2.8–4 NSm).
Apply high strength (green) Loctite or equivalent to threads.
Torque to 35–45 in-lbs (4–5.1 NSm) (left hand threads).
0849B
Fig. 2
Manual Change Summary: Deleted air fitting, Part
No. 189–191 (11), from the kit. Changed item10 from
Vitonr to PTFE r o-ring.
Sales Offices: Atlanta, Chicago, Dallas, Detroit, Los Angeles, Mt. Arlington (N.J.)
Foreign Offices: Canada; England; Korea; Switzerland; France; Germany; Hong Kong; Japan
GRACO INC.
Qty.
P.O. BOX 1441 MINNEAPOLIS, MN
PRINTED IN U.S.A. 308–181 9/91 Revised 3/94
55440–1441
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