SB-2-168-N Page 3
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 remove
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 above. 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
15-20 ft-lbs.
JGA-4035 Packing Replacement Instruc-
tions
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.
To clean fluid passages, remove excess
material from cup, then flush with a suit-
able solvent. Wipe gun exterior with a
solvent dampened cloth. Never completely
immerse in solvent as this is detrimental to
the lubricants and packings.
NOTE
When replacing the fluid tip or
fluid needle, replace both at the
same time. Using worn parts can
cause fluid leakage. See Chart 1.
Also, replace the needle packing
at this time. Lightly lubricate the
threads of the fluid tip before reas-
sembling. Torque to 15-20 ft. lbs.
Do not overtighten the fluid tip.
To prevent damage to fluid tip
(5) or fluid needle (11), be sure to
either 1) pull the trigger and hold
while tightening or loosening
the fluid tip, or 2) remove fluid
needle adjusting screw (17) to
relieve spring pressure against
needle collar.
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, lubricate
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
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.
PARTS REPLACEMENT
Figure 1 Air Cap
Air Cap No.
HVLP: 30 PSI
MAX. INLET
No. 2000
A
B
C
E
D
Chart 1
Packing
(3 pieces)
Packing
Nut
Needle
Gun Body
Air cap covered by U.S.A. Patent
No. 6,293,476.
Fluid
Tip Size I.D.
Tip No.
In.
mm
GTI-213-12 0.047 1.2
GTI-213-13 0.051 1.3
GTI-213-14 0.055 1.4
GTI-213-15 0.059 1.5
GTI-213-16 0.063 1.6
GTI-213-18 0.070 1.8
ANGLED SIDE
THICK SIDE
SEAL
BAFFLE
Pry here if
necessary
