SB-2-193-G Page 3
PARTS REPLACEMENT
Figure 1 Air Cap
Maximum air pressure required to
assure compliance of 10 PSI Max.
Cap Pressure - this reading must be
taken at the spray gun handle inlet
fitting.
SPRAY GUN LUBRICATION
Daily, apply a drop of SSL-10* spray gun
lube at trigger bearing stud (28) and the
stem of air valve (20) where it enters air
valve assembly. The shank of fluid needle
(11) where it enters packing nut (9) should
also be oiled. Fluid needle packing (8)
should be lubricated periodically. Make
sure baffle (6) and retaining ring (3) threads
are clean and free of foreign matter. Before
assembling retaining ring to baffle, clean
the threads thoroughly, then add two drops
of SSL-10 spray gun lube to threads. Fluid
needle spring (14) and air valve spring (19)
should be coated with a very light grease,
making sure that any excess grease will not
clog the air passages. For best results, lubri-
cate the points indicated, daily.
* Not for air tools or high RPM equipment.
A.
Trigger Points
B.
Packing
C.
Adjusting Knobs
D.
Baffle Threads
E.
Air Valve Cartridge
PARTS REPLACEMENT
FLUID INLET GASKET (32) REPLACE-
MENT INSTUCTIONS
1.
Remove fluid inlet adapter (34) with
appropriate wrench.
2 .
Clean Loctite from gun body inlet threads
and seal area.
3.
Place gasket (32) squarely onto the
fluid inlet adapter and push it down
until it is flat against the shoulder.
4 .
Use medium strength thread sealant
(i.e. Devcon 2242 blue, or equal) on
threads before installing fluid inlet
adapter.
5 .
Torque fluid inlet adapter to 20-25 ft.
lbs. and tighten locknut.
A
C
D
B
E
Air Cap No.
HVLP: 30 PSI
MAX. INLET
XXX
Chart 2
Fluid Tip and Needle
If this No.
If This No. Matched Fluid
Tip Size
is on Needle, is on Tip,
Tip & Needle
(I.D.)
Order
Order
Assembly
In. mm.
JGA-402-FF
AV-2120-FF JGA-4045-FF .055 1.4
JGA-402-FX AV-2120-FX JGA-4045-FX .042 1.1
Note:
Do not use AV-1 copper gasket with
this spray gun.
Chart 1
No on Air Cap
Air Cap With Ring
Order
(Ref No. 4)
100
GTI-407-100
2000
GTI-407-2000
JGA-4035 Packing Replacement
Instructions
1. Remove adjusting knob and needle
spring from gun.
2. Partially withdraw needle from gun
body.
3. Loosen packing nut and remove.
4. Remove old packing.
5. Assemble packing nut to needle
6. Assemble packing in order shown to
needle.
7. Insert needle all the way into gun
body seating in tip.
8. Install needle spring and adjusting
knob.
9. Thread packing nut into gun body.
10. Tighten packing nut in equal
increments - no more than
1/6 turn at a time.
11. After each adjustment, pull needle
open and observe needle closure.
12. If needle snaps shut, continue
adjusting nut until there is evidence
of needle bind or slow closing.
13. Back off packing nut 1/12 turn to the
point where needle snaps shut.
Packing nut must remain tight
enough to prevent loosening by
hand.
14. Pull needle several times to verify
needle snaps shut and check
packing nut for looseness.
Packing
(3 pieces)
Packing
Nut
Needle
Gun Body
GTI-33 Baffle Seal Replacement
1. Remove Fluid Tip (5).
2. Remove baffle (6).
3. Remove Seal (7) from baffle.
NOTE
The seal is designed to be a tight
fit on the baffle. The seal should be
able to be removed using your
fingers. If you are unable to re-
move the seal using your fingers,
insert a small screwdriver between
the outer lip and the back of the
baffle and pry the seal off.
4. Assemble seal to baffle with
angled
side up
as shown below.
NOTE:
The
seal should be a tight fit on the baffle. If
it is a loose fit on the baffle, assure that
it is assembled with the angled side up.
5. Install baffle on gun.
6. Install fluid tip (5) and tighten to
12-15 ft-lbs.
ANGLED SIDE
THICK SIDE
SEAL
BAFFLE
Pry here if
necessary
