Graco PRO Xs4 AA manual Fluid Needle Replacement, Spring Cap and Springs

Models: PRO Xs4 AA

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Fluid Needle Replacement

1.Prepare the gun for service, page 26.

2.Remove the air cap assembly and seat housing, page 27.

3.Remove the barrel (16), page 32.

4.Remove the trigger screws (8) and trigger (30).

5.Remove the spring cap (45) and the spring (26a) from the barrel. See Fig. 13.

Repair

CAUTION

To avoid damaging the seat housing and gun barrel, never overtighten the seat housing. Overtightening may result in improper fluid shutoff.

13.Install the seat housing and air cap, page 27.

14.Test gun resistance, page 19.

6.Place the 2 mm driver (44) in the back of the fluid needle assembly. Push the tool in and turn it coun- terclockwise about 12 full turns to unthread the nee- dle.

7.Insert the tool in the front of the gun and push the fluid needle assembly out the back of the barrel.

CAUTION

To avoid damaging the needle assembly, be sure the needle is completely unthreaded before pushing it out of the barrel.

TI1618A

Fig. 13. Spring Cap and Springs

55 45

26a

8

30

8.Install the fluid needle assembly in the gun barrel. Push in on the needle with the tool (44) and tighten. See Fig. 14.

9.Install the spring (26a).

10.Install the spring cap (45), making sure the ground- ing spring (55) is in place.

11.Install the trigger (30) and screws (8).

12.Install the barrel (16), page 32.

TI1526B

8

30

Fig. 14. Fluid Needle Replacement

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Page 31
Image 31
Graco PRO Xs4 AA manual Fluid Needle Replacement, Spring Cap and Springs