Graco Inc 308584, 3500WB, 222700 manual Fluid Packing Rod Removal and Repair continued, Service

Service

Fluid Packing Rod Removal and Repair (continued)

7.Place the packing nut (28c) and o-ring (28f) on the fluid rod (28a). Flats on the packing nut must be facing toward the back of the fluid rod.

8.Fill the entire inner cavity of the spacer (28h) with the dielectric grease included with the gun. Place the spacer on the fluid rod (28a), in the direction shown in Fig. 20. Generously apply the grease to the outside of the spacer.

9.Place the fluid packing (28e), needle packing (28d), and housing (28b) on the fluid rod (28a), as shown in Fig. 20.

10.Lightly tighten the packing nut (28c) with the multi- tool (62). The packing nut is properly tightened when there is 2 lbs. (9 N) of drag force when slid- ing the packing housing (28b) assembly along the shaft. Tighten or loosen the packing nut as need- ed.

11.Lubricate the o-ring (28g).

12.Make sure the spring (30) is installed against the nut (U) as shown in Fig. 20.

13.Install the fluid packing rod assembly (28) into the gun barrel. Using the multi-tool (62), tighten the assembly until just snug.

14.Install the trigger (13) and tighten the trigger screws (4). See Fig. 19.

15.Install the electrode needle, fluid nozzle and resis- tor stud assembly and the air cap assembly as instructed on page 32.

16.Test the gun resistance as instructed on page 28.

Apply a very light coat of lubricant to the o-ring (28g).

Fill the inner spacer (28h) cavity with the dielectric grease and generously lubricate the outside of the spacer.

Tighten the packing nut (28c) to 2 lbs (9 N) of drag force.

The spring (30) is not included with the fluid packing rod assembly (28)

28a 28d 28e 28g  28h  28 28b 28c 	U 30
f

28 03558

Fig. 20

34 308584