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REA-90 and 90L Spray Applicators - Maintenance
Disassembly
Disassembly
Disassembly
Disassembly
Disassembly
1. Remove the trigger adjustment nut and spring
retainer from the needle shaft using two 3/8-inch
open-end wrenches.
2. Position the barrel so the front is facing down.
Using the small spanner tool on the special multi-
purpose wrench, unscrew the packing nut from
the rear of the barrel by turning it counterclockwise.
3. Holding the barrel in one hand and with a firm
pull, remove the needle shaft assembly from the
packing chamber of the barrel. Trigger adjustment
nut can be reinstalled for additional grip. If the
needle shaft will not pull out of the barrel, use the
following procedure:
a.) Remove the needle/electrode from
the needle shaft.
b.) Pull the needle shaft from the rear of
the barrel.
c.) Place the barrel on a work bench. Holding
the barrel in one hand, with the front pointing
upward, push a5/16-inch diameter wooden
or plastic dowel through the center bore of
the barrel. This should push the cartridge
seal assembly out the rear of the barrel.
C A U T I O N
C A U T I O N
C A U T I O N
C A U T I O N
C A U T I O N
! ! ! ! !
During this operation, be CAREFUL that
>
the interior surface of packing chamber is
NOT damaged (marred or scratched)! This
chamber is a seal area and the barrel/
cascade assembly will have to be replaced
if it is damaged.
4. Remove the trigger adjustment nut if it was
required when pulling the needle shaft from the
barrel packing chamber. Then remove the packing
nut, spacer, rear seal retainer sub-assembly, and
packing tube from the rear of the needle shaft. The
spring-loaded u-cup and o-ring can now be removed
from the rear seal retainer.
3 7
3 7
3 7
3 7
3 7
N O T E
N O T E
N O T E
N O T E
N O T E
If the spacer and seal retainer do not
>
separate easily, wedge a knife blade be-
tween them and pry them apart.
5. Unscrew the needle/electrode from the front of
the needle shaft.
6. Remove the cartridge seal assembly from the
front of the needle shaft.
Figure 9: Cartridge Seal Assembly
Figure 9: Cartridge Seal Assembly
Figure 9: Cartridge Seal Assembly
Figure 9: Cartridge Seal Assembly
Figure 9: Cartridge Seal Assembly
7. Loosen the fluid nozzle using the special multi-
purpose wrench and unscrew it by hand to remove.
Cleaning and Inspection
Cleaning and Inspection
Cleaning and Inspection
Cleaning and Inspection
Cleaning and Inspection
1. Clean the packing chamber of the barrel with a
suitable solvent and a soft bristle bottle brush. Do
not submerge or soak the barrel in solvent.
not submerge or soak the barrel in solvent.
not submerge or soak the barrel in solvent.
not submerge or soak the barrel in solvent.
not submerge or soak the barrel in solvent.
If the chamber has dry paint in it and cannot be
cleaned out, the barrel MUST BE REPLACED
W A R N I N G
W A R N I N G
W A R N I N G
W A R N I N G
W A R N I N G
! ! ! ! !
Soaking or submerging the barrel could
>
allow solvents into the high voltage section
of the barrel, leading to applicator failure
and/or possible dangerous conditions that
could result in property damage and per-
sonnel injury.
Do
Do
Do
Do
MUST BE REPLACED
MUST BE REPLACED
MUST BE REPLACED.
MUST BE REPLACED
AH-94-04.7
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