If you wish to clean the gun using
this method, we recommend one of
the following alternatives:
1. Spray solvent through the gun into
a closed system. An enclosed unit
or spray gun cleaning station con-
denses solvent vapors and captures
them, preventing the escape of
VOCs into the atmosphere.
2. Place the spray gun in a washer
type cleaner. This system must
totally enclose the gun, cup, noz-
zles and other parts during wash-
ing, rinsing and draining cycles.
This type of unit must be able to
flush solvent through the gun
without releasing VOCs vapors.
3. When using a washer to clean cups,
take care not to immerse either
siphon or pressure assist cups in
solvent for long periods of time.
Doing so will weaken the cups.
How to maIntaIn
your gun
All part names and item numbers
in parentheses refer to the exploded
drawing and Parts List on page 2.
to replace tHe aIr ValVe
assemBly (18) or tHe rear
u-cup seal (15)
1. Remove the fluid control knob (8),
stainless steel spring (9) and
needle assembly (10).
2. Unscrew the rear housing (14)
using a 5/16" hex wrench. Inside
the rear housing is the washer (16)
and the rear u-cup seal.
3. Remove the washer. The rear
u-cup seal can be pushed out from
behind if you need to replace it.
4. Remove the yellow spring (17).
5. Holding the spindle cap (26) to
avoid losing it, pull out the air
valve assembly.
6. Replace and reassemble
in reverse order.
• Lightly lubricate new seals with
petroleum jelly.
• Note the orientation of the rear
u-cup seal: the open side should
face the front of the gun.
• Take care when starting the rear
housing into the gun. Make sure
the air valve assembly is lined up
with the rear u-cup seal; other-
wise, the end of the air valve
spindle (19) may damage the seal.
to replace tHe front
u-cup seal (15)
1. Remove the air valve assembly as
described on the previous page.
2. Remove the retaining ring (37),
fluid inlet (30) air nozzle (36),
fluid nozzle (35), head insert (34),
o-ring (33) from the front of gun.
3. Unscrew the trigger screw (24)
from the trigger stud (23) and
remove the trigger stud and trigger
from the handle assembly (2).
Note the direction in which the
spindle cap (26) is positioned.
4. Use a screwdriver to unscrew the
seal retainer (27).
5. Push out the front u-cup seal and
replace it.
6. Reassemble in reverse order.
• Lightly lubricate new seals with
Gunner’s Mate.
• Note the orientation of the front
u-cup seal: the open side should
face the back of the gun.
to replace tHe pacKIng (29)
In tHe fluID Inlet (31)
1. Remove the fluid control knob (8),
stainless steel spring (9), and
needle assembly (10).
2. Unscrew the packing nut (28).
3. Remove the packing using a stiff
wire hook or small sheet metal
screw.
4. Replace the packing and reassem-
ble in reverse order.
to replace tHe
o-rIng (5) In tHe
fan control assemBly (3)
1. Remove the fan control assembly.
2. Pry off the retaining ring (7).
3. Unscrew the fan control housing
(6).
4. Remove and replace the o-ring.
5. Reassemble.
general InstructIons for
aIr supplIeD paInt sprayIng
To reduce overspray and obtain maxi-
mum efficiency, always spray with
the lowest possible fluid and air pres-
sure that produces an acceptable
spray pattern. Excessive atomizing
air pressure can increase overspray,
reduce transfer efficiency, and with
some materials, result in poor finish
quality from dry spray. Atomizing air
pressures should not exceed 10 psi.
See the tables on page 6 and Impor-
tant Regulatory Note on page 8.
For best results with pressure feed
set-ups use 1 to 4 psi fluid pressure.
Higher than 4 psi fluid pressure may
be required for heavy-bodied materi-
als. Low fluid pressure will produce a
narrower than normal spray pattern.
Generally use 30-35 psi air at the gun
inlet (see page 7). Unusually heavy,
difficult to atomize materials may
require up to 50 psi air at the gun
inlet.
How to clean and maIntaIn your Binks cub sl HVlp spray gun
5
noTE
take care not to lose the spindle cap
(26).
