Graco 3A2495C important safety instructions Air Valve Repair, See Gun Barrel Installation

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Air Valve Repair

1.See Prepare the Gun for Service, page 39.

2.See Gun Barrel Removal, page 43.

3.Remove the screws (13) and trigger (12).

4.Remove the ES On-Off Valve. See ES On-Off Valve Repair, page 50.

5.Remove the spring (2).

6.Push on the front of the air valve shaft to force it out the back of the handle. Inspect the rubber seal (23a*) and replace if damaged.

7.Inspect the u-cup (3). Do not remove the u-cup unless damaged. If removed, install the new one with its lips facing into the gun handle (16). Place the u-cup on the shaft of the air valve to help seat it in the gun handle.

Repair

8.Install the air valve (23) and spring (2) into the gun handle (16).

9.Install the ES On-Off Valve. See ES On-Off Valve Repair, page 50.

10.Install the trigger (12) and screws (13).

11.See Gun Barrel Installation, page 43.

Figure 41 Air Valve

Figure 40 Install U-Cup

3A2495C

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Image 51
Contents Instructions Important Safety InstructionsContents II 2 G Smart Display Standard DisplayFIRE, EXPLOSION, and Electric Shock Hazard Skin Injection Hazard Equipment Misuse Hazard How the Electrostatic AA Spray Gun Works Gun OverviewSee Spray Tip Selection Chart, page 62, for availSetup Checklist, Description PurposeSmart Guns Operating Mode Bar GraphError Display Key for Figs Description Purpose Description Purpose Diagnostic Mode Alternator Speed Hertz Screen Ventilate the Spray Booth InstallationAir Supply Line Fluid Supply LineHose NON-HAZARDOUS Area Typical Installation Key DescriptionGun Setup Checklist Gun SetupGun Setup Pressure Drop LED Indicator Colors DescriptionGrounding Key to Figs Ground the Operator Ground the Gun Check Gun Electrical Grounding Fluid Resistivity Levels Megohms-cm Flush Before Using EquipmentCheck Fluid Resistivity Check Fluid ViscosityShutdown Pressure Relief ProcedureOperation StartupFlushing MaintenanceClean the Gun Daily Maintenance Check Gun Electrical Grounding, Daily System CareTest Gun Resistance Electrical TestsAlternator Removal and Replacement, Test Power Supply ResistanceTest Gun Barrel Resistance Clean the Gun Daily, TroubleshootingSpray Pattern Troubleshooting Problem Cause SolutionGun Operation Troubleshooting Test Gun Resistance, Replacement,Power Supply Removal Replacement, page 45Replacement, page 52 See Clean the Gun Daily,Repair Prepare the Gun for ServiceSee Prepare the Gun for Service, Air Cap, Spray Tip, and Fluid Seat Housing ReplacementSee Test Gun Resistance, Electrode ReplacementFluid Tube Removal and Replacement Fluid Filter ReplacementGun Barrel Removal Gun Barrel InstallationRemove Cap and Springs Fluid Needle ReplacementSee Prepare the Gun for Service, See Gun Barrel Removal, Power Supply Removal and ReplacementAlternator Removal and Replacement Alternator Fan Air Adjustment Valve Fan Air Adjustment Valve RepairAtomizing Air Adjustment Valve Repair ES On-Off Valve Repair Air Valve Repair See Gun Barrel Installation,Smart Module Smart Module ReplacementAir Inlet Fitting and Air Exhaust Valve Air Swivel and Exhaust Valve ReplacementParts Standard Air-Assisted Spray Gun AssemblyDescription Qty Smart Air-Assisted Spray Gun Assembly See Smart Module Assembly Part No N664 Alternator Assembly Alternator AssemblyPart No N632 ES On-Off Valve Assembly ES On-Off Valve AssemblyPart No N634 Fan Air Valve Assembly Fan Air Valve AssemblyAir Cap Assembly Smart Module Assembly AEM Fine Finish Spray Tips Spray Tip Selection Chart41 bar MPa Bar Spray Tip AEF Fine Finish Pre-Orifice Spray TipsOrifice Fluid Output Oz/min l/minTest Equipment Repair Kits, Related Manuals, and AccessoriesGun Accessories System AccessoriesHoses Operator AccessoriesGun Model In. mm Weight, oz g DimensionsTechnical Data Graco Information Graco Pro Xp Warranty