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309295 35
Atomizing Air Adjustment
Valve Repair
1. Prepare the gun for service, page 26.
2. Place a wrench on the flats of the valve assembly
(20) and unscrew it from the handle (17).
NOTE:
You may replace the valve as an assembly (go to
step 9) or as individual parts (steps 3-9).
3. Remove the retaining ring (20a). See Fig. 18.
4. Turn the valve stem (20d) counterclockwise until it
comes free from the valve housing (20c).
5. Remove the o-ring (20b).
6. Clean all parts and inspect for wear or damage.
NOTE:
Use non-silicone grease, Part No. 111265. Do not
over-lubricate.
7. When reassembling the atomizing air valve (20),
lightly lubricate the valve threads and screw the
stem (20d) fully into the housing (20c) until bot-
tomed. Install the o-ring (20b*), lubricate, and
unscrew the valve stem until the o-ring enters the
housing.
8. Reassemble the retaining ring (20a). Unscrew the
valve stem from the housing until it is stopped by
the retaining ring.
9. Screw the valve assembly (20) into the gun handle,
using a wrench on the flats of the housing. Torque
to 15-25 in-lb (1.7-2.8 N•m).
Fi
g
. 18. Atomizin
g
Air Ad
j
ustment Valve
TI1487A
20a
20b*
20c
20d