SERVICE

Barrel Removal

1.Unscrew the nut (34) at the gun's fluid inlet adapter (35). See the PARTS DRAWING.

2.Pull the fluid tube (31) out of the fluid adapter (35).

3.Remove the trigger by removing the screws and spacers from the gun.

4.Remove the ES indicator lights from the socket head cap screws (52).

5.Using the wrench (66f) supplied, loosen and remove the two socket head cap screws (52) from the gun. See Fig 12.

6.Hold the gun body with one hand and pull straight up to remove the gun barrel (20). See Fig 13.

CAUTION

To avoid damaging the power cartridge, always pull the gun barrel straight away. If necessary, gently move the gun barrel from side to side to free it from the gun body.

NOTE: The gasket (6) should be left in the gun body if the gasket is not to be replaced.

To install the barrel (20), follow the procedure below:

1.Be sure the gasket (6) is in place. Replace if dam- aged. Place the barrel over the power cartridge (2) and onto the gun body. See Fig 13.

2.Install the two socket head cap screws (52) and tighten with the wrench (66f). See Fig 12.

3.Snap the ES indicator lights in place over the socket head cap screws (52).

4.Insert the fluid tube (31) into the gun's fluid inlet adapter (35) and tighten the nut (34).

5.Install the trigger with the screws and spacers. Test the gun resistance as instructed on page 16.

Fluid Needle Packing Replacement

1.Remove the air cap assembly and fluid nozzle as described in To Clean or Change Air Cap and Fluid Nozzle.

2.Remove the electrode as described under Elec- trode Replacement.

3.Remove the gun barrel as described under Barrel Removal.

4.Unscrew the packing nut (9e) using the wrench (66b) supplied. See Fig 14.

KEY

31Fluid Tube

52Cap Screw

66f Wrench

66f

31

52

Fig 12

KEY

2

Power Cartridge

 

6

Gasket

 

20

Gun Barrel

20

 

 

 

 

6

2

Fig 13

KEY

9e

Packing Nut

66b

66b

Wrench

 

9e

Fig 14

 

Page 20
Image 20
Graco Inc 218-745, 307-712, PRO 5000 manual Barrel Removal, Fluid Needle Packing Replacement, 66b