Repair
Items Needed for Service
•Seal Installation Tool
•Nut Driver Tool (29)
•Gun Tool (30)
•
•7/32 in. Hex Wrench
•3/16 in. Hex Wrench
•Compatible Solvent
•Lubricant (part number 111265)
Repair Kits
• Seal Repair Kit 249422 is available. For best results, use all the new parts in the kit. Kit parts are marked with an asterisk, for example (7*).
•Acetal Seat Repair Kit 249424 (standard for Model G15 guns) and Carbide Seat Kit 249456 (standard for Model G40 guns) are available. For best results, use all new parts in the kit. Kit parts are marked with a symbol, for example (5c†).
•Acetal Seat Kit 249424 and Carbide Seat Kit 249456 can be used with both Model G15 guns and Model G40 guns.
•Acetal Seat Kit 249424 is intended for low pres- sure usage.
Fan Valve Replacement
1.Relieve the pressure, page 10.
2.Unscrew the fan valve packing nut (A) from the back of the gun body (1). Slide the fan valve assembly (4) out of the gun body. See FIG. 35.
3.Before reinstalling, turn the pattern adjustment valve
(C) of the replacement fan valve assembly (4) com- pletely counterclockwise to prevent damage to the seat (5c†). Install the replacement fan valve assem- bly into the gun body (1). Screw the packing nut (A) into the gun body and torque to 90
Repair
1 4
C
1 A
1 Torque to 90
TI6576A
FIG. 35
Complete Gun Packing Repair
Disassembly
Seat Repair
• See Repair Kits, page 20.
•Clean parts with a solvent that is compatible with the parts and the fluid being sprayed.
1.Relieve the pressure, page 10. Remove the fluid and air hoses from the gun.
2.Remove the air cap retaining ring (6), air cap (21), and spray tip (33). See FIG. 36.
6
33 | 21 | TI6568A |
|
FIG. 36
3.Trigger the gun to pull the needle housing off the seat while you unscrew the diffuser (5) from the gun body (1), using the gun tool (30).
20 | 311001C |
