BINKS MODEL 550 AUTOMATIC AIRLESS SPRAY GUN
INCORRECT PATTERNS
CENTER LINE
OF
GUN
“TAILS”
“HOURGLASS”
“DISTORTION”
90˚
90˚
MAXIMUM
FAN WIDTH
8"
to
14"
MAINTENANCE INSTRUCTIONS
(See High Pressure Warning Statement on Page 1)
TO CLEAN NOZZLE TIP:
1. BEFORE proceeding with any maintenance,
read safety procedure, paragraph 3, in High
Pressure Warning, page 1.
2. Remove tip guard assembly (4), nozzle tip, and
gasket (3).
3. Submerge nozzle tip in solvent to remove dried
material.
4. Blow air through nozzle tip to clean.
5. Airless spray nozzle tips are made of tungsten
carbide and are very brittle. Do not drop. To
clean a nozzle tip, use solvent, toothpick or
sharpened match. Never use a metal probe.
TO REPLACE WIRE ASSEMBLY:
1. BEFORE proceeding with any maintenance,
read safety procedure, paragraph 3, in High
Pressure Warning, page 1.
2. For convenience, you may wish to remove spray
gun from gun mount.
3. Carefully remove the cap (10). The spring (13)
is under tension and will come out when cap
(10) is removed.
4. Remove nut (14) and lockwasher (15). The back
plate (12), diaphragm (11) and washer (17)
may be removed at this time.
5. Loosen the wire assembly nut (6) from the stem
(20).
6. Loosen and remove the bearing screw assembly
(19) and the stem (20) from spray gun. The
packing (18) should also be inspected at this
time. If worn, replace.
7. Loosen and remove the gland nut (21). The
wire assembly (6) may now be pulled rearward
from the spray gun.
8. If worn, replace the gland set (22).
9. The material body assembly (7) may be
removed for cleaning by loosening set screws
(1). Note the pin in gun body assembly (8).
10. Reassemble in reverse order.
DIFFUSER ASSEMBLIES
Reduces fluid velocity to minimize tip wear and to
aid fluid filtration. Order 54-2229 Nylon Gasket
with either set-up, described below.
54-1639 thimble and 54-1797 (100 mesh) screen.
54-2378 Nut for use with 54-1835 (.005) 125 mesh
or 54-1836 (.009) 60 mesh edge type filter.
54-1797
54-1639
54-2378
54-1835
54-1836
CORRECT PATTERN
EN
77-2120-R16 (9/2018)
4 / 8
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