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CLEANING
Note
For routine cleaning, it is not nec-
essary to remove cup from gun.
Do not soak the lid in solvent for
extended periods of time. Doing
so could cause cup/lid sealing
problems and leakage. If lid
becomes tight, or does not fit,
it is due to extended soaking in
solvent. Let lid air dry overnight
and the lid should return to its
original size and fit.
Remove lid and properly dispose of any
excess paint. Pour in a small amount of
clean solvent. The amount will vary with
different coatings and solvents. Reinstall
lid. Shake cup to wash down the inside
surfaces. Pull trigger to allow some sol-
vent to be flushed through gun. Remove
lid and pour out dirty solvent. Add a
small amount of clean solvent and repeat
procedure. Wipe exterior of lid with a
clean cloth and clean solvent.
To clean air cap and fluid tip, brush exterior
with a stiff bristle brush. If necessary to
clean cap holes, use a broom straw or
toothpick if possible. If a wire or hard instru-
ment is used, extreme care must be used to
prevent scratching or burring of the holes
which will cause a distorted spray pattern.
To clean fluid passages, remove excess
material at source, then flush with a suitable
solvent. Wipe gun exterior with a solvent
dampened cloth. Never completely immerse
in solvent as this is detrimental to the lubri-
cants and packings.
Chart 1
No. on
Fluid Tip
or Needle
Fluid Tip
Order
(Ref. No. 4)
1.1
FUN-4-1.1
1.4
FUN-4-1.4
1.8
FUN-4-1.8
PREVENTIVE MAINTENANCE
Spray Gun Lubrication
Daily, apply a drop of SSL-10 spray gun
lube at trigger bearing stud (19) and the
stem of the air valve (10). The shank of
the fluid needle (13) where it enters the
packing nut (17) should also be oiled. The
fluid needle packing (16) should be kept
soft and pliable by periodic lubrication.
Make sure the baffle (5) and retaining
ring (1) threads are clean and free of
foreign matter. Before assembling retain-
ing ring to baffle, clean the threads thor-
oughly, then add two drops of SSL-10
spray gun lube to threads. The fluid needle
spring (14) and air valve spring (11) should
be coated with a very light grease, mak-
ing sure that any excess grease will not
clog the air passages. For best results,
lubricate the points indicated, daily.
A. Trigger Points
B. Packing
C. Adjusting Valves
D. Baffle/Air Cap Threads
D
C
When replacing the fluid tip or fluid
needle, replace both at the same
time. Using worn parts can cause
fluid leakage. Also, replace the
needle packing at this time. Lightly
lubricate the threads of the fluid tip
before reassembling. Torque to
15 ft-lbs. Do not overtighten the
fluid tip.
To prevent damage to the fluid tip (4)
or fluid needle (13), be sure to either
1) pull the trigger and hold while
tightening or loosening the fluid tip
or 2) remove fluid needle adjusting
screw (15) to relieve spring pressure
against needle collar.
Fluid
Tip
Fluid
Fluid Tip
Size
Needle
Computer No.
(mm) (Ref No. 13)
192300
1.1
FUN-41-1.1
192301
1.4
FUN-41-1.4
192302
1.8
FUN-41-1.8
A
C
B
Note
Fluid
Needle
Computer
No.
Applications
192303
Stains, lacquers and other thin materials.
192304
General purpose, light to medium viscosity materials.
192305
Primers and medium viscosity materials.
SB-2-611
PARTS REPLACEMENT
Figure 1 Air Cap
No. V
HVLP: 18 PSI
MAX. INLET
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.
FUN-463 Packing Replacement
Instructions
Needle
Gun Body
Packing
(2 pieces)
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.
Page 3
Air Cap No.
Packing
Nut
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