Ransburg REA Automatic Applicators 77359, 76110, 77140 - Manual (Page 38)

1. Remove air cap and retaining ring from barrel
and clean or replace it.
2. Prior to removing the fluid nozzle from the
applicator barrel, the trigger must be actuated
by applying air pressure to the trigger port or by
removing the rear piston housing and pulling back
on the needle shaft assembly. This will prevent
damage to the inside sealing surface of the fluid
nozzle or the sealing taper of the electrode.
3. With the nozzle wrench on wrench flats, remove
fluid nozzle from barrel.
4. Clean or replace fluid nozzle using appropri-
ate cleaning method.
BARREL DISASSEMBLY
(REA 9000R and 900A)
1. Remove packing nut from rear of the barrel
with the 19749-00 spanner wrench.
2. Firmly pull the needle/electrode shaft as-
sembly using the extension valve rod out of the
packing chamber:
• Resistive Electrode Accessory
• Male Chevron Adapter
• Chevron Seals (4 required)
• Female Chevron Adapter (conductive)
• Needle/Electrode Shaft
• Packing Tube
• O-Ring
• Rear Seal Retainer
• U-Cup (spring loaded)
• Spacer and (Belville) Spring Washers
(6 required)
3. Remove extension valve rod and adjustin nut
with two (2) 3/8” wrenches.
• Check all parts for damage or wear. Replace
those that are damaged or worn with new
parts.
• Replace chevron seals, o-ring and u-cup
with new parts.
>
To avoid damage to the fluid nozzle, needle/
electrode, the paint pressure MUST be released
by triggering the applicator prior to removing
the tip.
>
The applicator MUST be tilted front down to
remove the air cap and/or fluid nozzle. Failure
to do so may allow paint to enter the air passag-
es, thereby reducing air flow and damaging the
applicator barrel/cascade. Applicators may be
flushed in lieu of removing nozzles. However,
they MUST be either flushed or tilted down
BEFORE removing the fluid nozzle!
>
The control unit power MUST always be off
when removing the nozzles.
C A U T I O N
!
> Using any tool other than the Ransburg
19749-00 wrench to remove or reinstall the
fluid nozzle may distort or damage it.
> Over-tightening of plastic parts may cause
breakage.
C A U T I O N
!
NOTE
>
If the fluid nozzle is replaced, there is
a good chance that the needle/electrode
assembly will need to be replaced, too.
Fluid Nozzle 5. Screw the cleaned or new fluid nozzle into barrel
and secure with the nozzle wrench.
6. Screw retaining ring over the air cap onto
barrel.
Ransburg
REA Automatic Applicators - Maintenance
34 AA-99-02.5