Graco PRO Xs4 AA manual Fluid Tube Replacement, Fluid Filter Removal

Fluid Tube Replacement

1.Prepare the gun for service, page 26.

2.Disconnect the bottom fluid tube nut (C). See Fig. 11.

3.Carefully unscrew the top fluid tube nut (D).

CAUTION

Be careful not to damage the fluid tube assembly (14) when cleaning or installing it, especially the sealing surface (E). If the sealing surface is damaged, the entire fluid tube assembly must be replaced.

4.Apply dielectric grease (40) to the entire length of the plastic extension on the end of the fluid tube (14).

5.Apply low strength thread sealant to the fluid tube nut threads.

6.Install the fluid tube into the gun barrel and tighten the top nut (D) hand-tight, then 1/4 to 1/2 turn with a wrench. There will be a gap between the nut and barrel. Do not overtighten the nut.

7.Make sure the fluid filter (1) is in place in the fluid fitting. Tighten the bottom nut (C) onto the fitting and torque to 20-30 in-lb (2.3-3.4 N•m). Make sure the top nut remains tight.

C

1

E

D

ti1524a

Fig. 11. Fluid Tube Replacement

Repair

Fluid Filter Removal

1.Prepare the gun for service, page 26.

2.Disconnect the bottom fluid tube nut (C).

3.Remove the fluid filter (1) from the fluid fitting. Clean or replace the filter, as needed. See Fig. 12.

NOTE: Replacement filters are available in 100 mesh (standard) or 60 mesh sizes. See page 47.

4.Install the fluid filter in the fluid fitting. Tighten the bottom nut (C) onto the fitting and torque to 20-30 in-lb (2.3-3.4 N•m). Make sure the top nut remains tight.

CAUTION

Be sure the fluid tube (14) is not twisted after tighten- ing the bottom nut (C).

TI1521A

14

C

1

Fig. 12. Fluid Filter Removal

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