Repair

Atomizing Air Adjustment Valve Repair

1.Prepare the gun for service, page 25.

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. 19.

4.Turn the valve stem (20d) counterclockwise until it comes free from the valve housing (20c).

5.Remove the o-ring (20b).

20b*

20c

20a

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).

20d

TI1487A

Fig. 19. Atomizing Air Adjustment Valve

34

309295L

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Graco Inc Xs4 AA, 309295L, 244572, 244573 important safety instructions Atomizing Air Adjustment Valve Repair
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244572, 309295, 309295L, 244573, Xs4 AA specifications

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