Graco 295616 important safety instructions Air Motor Repair, Series a Air Valve

Air Motor Repair

Air Motor Repair

CAUTION

Air valve assembly has changed to series B for improved performance. Parts are not interchangeable between series A and B air motor. Series A air valves can be upgraded to series B with kit 262042.

1.Remove cap (1), cylinder (4), and square gaskets (3*). Inspect all parts, including spring under cap (not shown in FIG. 10) for damage and replace if necessary. See FIG. 10. Unscrew by hand or use a chain wrench to prevent distortion of the cylinder’s shape.

1

*3

4

*3

WLD

FIG. 10

NOTE: Cap (1) was replaced with a spring stop assem- bly for improved spring life. Existing pumps can be upgraded with Kit 24T043.

NOTE: Series A air motors have thin, flat, white seals in air valve. Series B (and later) air motors have thicker black seals in the air valve.

2.Series A air motors only: Loosen set screw (18) and unscrew air valve (5). If necessary to assist turning, wedge a screwdriver blade between the screw heads and the hex cap of air valve (5). Discard items 5, 13, 15, and 18. See FIG. 11.

*15

5

*13

18

FIG. 11: Series A Air Valve

3.Series B (and later Air Motors): Unscrew air valve (5). If necessary to assist turning, wedge a screwdriver blade between the screw heads and the hex cap of the air valve (5). Inspect o-rings (13* and 15*) for damage and replace if necessary. Ensure o-ring (13*) is correctly positioned and not pinched. See FIG. 12.

*15

5

*13

WLD

FIG. 12 Series B Air Valve

12 311882T