Graco Inc 224-094, 4600SC, 308-084, 235893, 235-894, 224-224 Fluid Packing Rod Removal and Repair

SERVICE

Fluid Packing Rod Removal and Repair

NOTE: The fluid packing rod can be replaced as individual parts or as an assembly . If the assembly is purchased, it is pre-adjusted at the factory.

1.Remove the jam nut (25) and arm (29). See Fig 20 .

2.Remove the air cap assembly, fluid nozzle and resis-

tor stud and electrode as described in Electrode Replacement.

3.Remove the fluid packing rod assembly (3), using the 9 mm hex nut driver (45). See Fig 21 .

CAUTION
Clean all parts in non-conductive	solvent

compatible with the fluid being used, such as xylol or mineral spirits. Use of conductive solvents can cause the gun to malfunction.

4. Check all the parts for wear or damage and replace if

necessary.

Before installing the fluid packing rod assembly (3),

KEY

3Fluid Packing Rod Assembly

45 Hex Nut Driver

3

Fig 21

45

0448

clean the internal surfaces of the barrel with a soft

brush or cloth. Check the inside of the barrel for

marks from high voltage arcing. If the marks are

present, replace the barrel.

5. If the parts are purchased separately , assemble them as instructed in steps 6 to 9 and as shown in Fig 22 .

If installing the complete fluid rod assembly , go to step 10, on page 24.

KEY

ENut

3	Fluid Packing Rod		3f	3h	3a	3d
	Assembly	3b 3e
3a						3g 3c
	Packing Housing
3b	Fluid Rod
3c	Packing Nut
3d	Spacer
3e	Rod Packing
3f	Fluid Packing
3g	O-Ring

11Spring

6.Place the packing nut (3c) and o-ring (3g) on the fluid rod (3b). The flats on the packing nut must be facing toward the back of the fluid rod.

7.Fill the entire inner cavity of the spacer (3d) with the dielectric grease included with the gun. Place the spacer on the fluid rod (3b), in the direction shown in Fig 22 . Generously apply the grease to the outside of the spacer.

(Item 11 not included with Fluid Packing Rod Assembly)

E 11

3

Fig 22

03224

308-084￿ ￿ ￿ ￿ ￿ 23