Graco Inc 222700 manual Fan Air Adjustment Valve Repair, Fluid Adjustment Assembly Repair, Detail

Service

Fan Air Adjustment Valve Repair

NOTE: The fan air valve (43) can be replaced as an assembly or as individual parts.

1.Prepare the gun for service as instructed on page 30.

2.Place a wrench on the flats of the valve housing and remove it from the handle. See Fig. 21.

3.If the parts are purchased separately, install them as instructed in steps 4 to 8.

If installing the complete valve, go to step 8.

4.Remove the retaining ring (43b). Rotate the air adjusting screw (43c) counterclockwise until it is disengaged from the valve housing threads (43d). Pull the adjusting screw out of the valve housing.

5.Clean all the parts and inspect them for wear or damage.

6.Install the o-rings (43e) on the adjusting screw (43c). Lubricate the o-rings and the adjusting screw threads with petroleum jelly.

7.Install the adjusting screw (43c) into the valve housing (43d), and install the retaining ring (43b) on the adjusting screw (43c). Back the adjusting screw out of the valve housing until it bottoms out against the retaining ring.

8.Apply PTFE paste to the threads of the valve housing (43d) and install it in the handle. Torque the housing to 10 to 12 in-lb (1.1 to 1.4 NSm).

Apply a very light coat of lubricant to the o-rings (43e) and adjusting screw (43c) threads.

Apply PTFE paste to the valve housing (43d) threads and tighten the housing into the handle to 10–12 in-lb (1.1–1.4 NSm).

DETAIL

43d 

43b

43c 

43e 

43

05161B

Fig. 21

Fluid Adjustment Assembly Repair

1.Prepare the gun for service as instructed on page 30.

2.Using a 14 mm socket wrench, remove the fluid adjustment assembly (45). See Fig. 22, page 36.

3.Turn the stem (45a) fully clockwise and remove the sleeve stop (45e).

4.To completely disassemble the fluid adjustment assembly, the sleeve stop (45e) must be assembled back on to the stem (45a). Turn the stem until the sleeve is protruding about 0.4 inches (10 mm).

Continued on the next page.

308584 35