
9
MAINTENANCE
LUBRICATION
Monthly: Remove piston assembly (17) and lubricate the air
cylinder chamber and needle valve spring with a coating of
petroleum jelly. Also, lubricate side port control assembly (7)
with oil. Binks Gunners Mate (56-429) is recommended.
REMOVAL OF PISTON
First unscrew the end cap (27), remove the springs (25 & 26)
and pull out the entire material needle valve (21, 22, 23, 24).
Remove piston by applying a few pounds of air pressure to the
cylinder air inlet. Air pressure will cause the piston to pop out.
TO REPLACE NEEDLE SEAL AND GLAND ADAPT-
ER IN FLUID INLET
Remove end cap (27), springs (25 & 26) and assembled materi-
al needle valve consisting of (21, 22, 23, 24). Proceed to the
front of the gun and remove retaining ring (1), air nozzle (2)
and fluid nozzle (3). Then, using wrench (43), unscrew head
insert (4) and remove fluid inlet (33). Unscrew packing nut
(38) and remove spring (37) and seal backup (36). Using a
No. 10 x 1-1/4" coarse thread wood screw (Binks Part No.
20-6536) or small sheet metal screw, remove the needle
seal (35) and gland adapter (34).
Replace gland adapter (34) and needle seal (35). Re-insert seal
backup (36), spring (37) and screw on packing nut (38) a cou-
ple of turns so it fits loosely by hand. Reassemble fluid inlet
(33) to gun body (5) with head insert (4). Tighten head insert
using wrench (43). Reassemble fluid nozzle (3), air cap (2) and
retaining ring (1). Re-insert material needle valve (21, 22, 23,
24), springs (25 & 26) and screw on end cap (27). Finally,
tighten packing nut (38) until it bottoms out on fluid inlet (33).
CLEANING
In certain states it is now against the law to spray solvents
containing Volatile Organic Compounds (VOC) into the atmo-
sphere when cleaning a spray gun.
In order to comply with these new air quality laws Binks
recommends one of the following two methods to clean your
spray finishing equipment:
1. Spray solvent through the gun into a closed system. An
enclosed unit, or spray gun cleaning station, condenses sol-
vent vapors back into liquid form which prevents escape of
VOC into the atmosphere.
2. Place spray gun in a washer type container. This system
must totally enclose the spray gun, cups, nozzles, and other
parts during washing, rinsing, and draining cycles. This type
of unit must be able to flush solvent through the gun with-
out releasing any VOC vapors into the atmosphere.
Additionally, open containers for storage or disposal of solvent,
or solvent-containing cloth or paper, used for surface prepara-
tion and clean-up may not be used. Containers shall
be non absorbent.
CLEANING
To clean the gun, flush the fluid lines with solvent and blow air
through the lines to make sure all the air passages are dry.
CAUTION
Never use lubricants containing silicone since these lubri-
cants can cause finish defects.
!
WARNING
Use of excessive pressure will cause piston to exit gun body
at high velocity, possibly resulting in damage to the compo-
nents or personal injury. Point back of the gun in a safe direc-
tion and do not use excessive pressure to remove the piston.
!
CAUTION
Never completely submerge the gun in solvent as this will
dissolve the lubricating oil and dry out the seals.
!
NOZZLE AND NEEDLE SELECTIONS
HVLP Air Nozzles
SPECIAL PURPOSE NOZZLES
APPLICABLE COMPATIBLE
TYPICAL APPLICATION FLUID NOZZLE NO. AIR NOZZLES FLUID NEEDLE
VERY HEAVY MATERIALS:
Block FIller, Texture Coatings,
Fire Retardants, Road Marking
Paint, Bitumastics, Adhesives,
Cellular Plastisols, Underbody
and Vitreous Coatings,
Special Applications
FEATHERING
For applications requiring
more gradual valve opening
for fluid flow control
with trigger
94VT (.052")▲1.3 mm 94P, 97P, 100P 54-3966
901VT (.066")▲1.6 mm 54-3967
903 (.079") 2.0 mm 47-478†
905 (.089") 2.3 mm 47-478†
905VT (.088")▲2.3 mm 905P 54-3968
906 (.100") 2.5 mm 47-478†
909 (.111") 2.8 mm 47-478†
909VT (.112")▲2.9 mm 54-3969
90F (.030") 0.8 mm 54-4032
91F (.040") 1.0 mm 54-4033
92F (.046") 1.2 mm 94P, 97P 54-4034
94F (.055") 1.4 mm 95AP, 97AP 54-4036
97F (.070") 1.7 mm 100P 54-4039
† Stainless steel, standard. Optional nylon tipped stainless steel (47-472).
▲ Carbide Tip – used on MACH 1AV gun.