Download REA90 TECH LIT

REA-90 and 90L Spray Applicators - Maintenance
AIR V
AL
VE
VAL
ALVE
5. With a 3/8-inch wrench, completely remove the
retaining nut with the internal u-cup seal.
(Refer to Figure 19)
Cleaning and Inspection
1. Remove the o-ring from the air valve cap.
Removal
1. Remove the trigger and ground spring from the
handle (refer to "Trigger" in the "Maintenance"
section).
2. With a standard blade screwdriver, remove the
air valve cap from the back of the handle.
2. Clean all components with a suitable solvent.
3. Inspect the air valve rod assembly for wear
and/or damage. If any wear is found on the air
valve rod assembly, it and the u-cup seal must be
replaced.
3. Remove the compression spring from the back
of the air valve rod assembly.
4. From the front of the handle, push the air valve
rod assembly rearward until it can be removed by
hand from the back of the handle. Do not use any
tools to grip the air valve. This can damage
its sealing surface.
!
CAUTION
> The seal internal to the air valve retaining
nut cannot be reused once it has been
removed from its holder.
4. Inspect all other parts for damage. Replace
any damaged components.
NOTE
> A rod (1/8-inch diameter or smaller)
can be used to push the assembly out the
back of the handle until it can be gripped
with the fingers.
5. Inspect the brass seat in the handle for damage
or wear. If damaged or worn, the handle must be
replaced. (Refer to "Handle" in the "Maintenance"
section.)
Item #
17
28
30
31
33
69
Description
U-Cup
Retaining Nut
Air Valve Rod Assembly
Spring
Air Valve Cap
O-Ring
Figure 19: Air Valve
AH-94-04.6
46