Graco Inc 313516C important safety instructions Reassembly

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Reassembly

1.Non-circulating guns only: Lubricate the backup ring (20†) and o-ring (21†) and install them on the fluid outlet port plug

(19). Install the plug in the fluid outlet port of the fluid housing (2). See FIG. 20.

2.All guns: Reinstall the gasket (22) in the fluid housing (2).

3.Install the o-rings (8*, 9*) on the piston (3). Install the two o-rings (10*, 11*) on each of the piston stems (T). Lubricate all the o-rings, the piston, and the piston stems.

4.Remove the protective paper from the sticky side of the gasket (12*) and adhere the gasket to the bottom of the piston hous- ing (1), making sure the three holes in the gasket are properly aligned with the match- ing holes in the housing.

5.Lubricate the new fluid packing (17†) and insert it into the packing nut (16). Insert the packing nut into the fluid housing (2) and torque to 95-105 in-lb (10.7-11.8 N•m).

6.Align the gasket (15*) as shown in the exploded view in FIG. 20. Place the gasket on the piston housing (1), then install the fluid housing (2) onto the piston housing. Torque the two screws (14) to 35-45 in-lb (4.0-5.1 N•m).

a.Insert the piston (3) into the piston housing (1).

b.Ensure nozzle sealing o-ring (36) is installed on nozzle (23).

7.To avoid galling of the fluid nozzle seat in the fluid housing, apply a thin film of lubri- cant to the threads. Install the nozzle into the fluid housing. Torque the nozzle securely to 35-45 in-lb (4.0-5.1 N•m).

Service

NOTE: If you are replacing the needle tip (5a), apply semi-permanent anaerobic sealant to two threads at the end of the needle shaft. Assemble the needle tip to the shaft and hand tighten. Allow adequate time for the sealant to cure before installing the needle assembly into the gun.

8.Lubricate and install the needle (5) into the back of the gun assembly. Push it straight in through the piston.

9.Install the needle stop (29) on the needle. Coat the setscrew (30) with semi-perma- nent anaerobic sealant and install the screw into the needle stop. Torque to 4-5 in-lb (0.45-0.57 N•m). Pull on the needle to make sure it seats fully.

10.Install the springs (6, 7).

11.Lubricate the threads of the piston housing

(1). Screw the cap (4) onto the housing until it bottoms out.

12.Install the air cap (24) and air cap retainer (25).

13.Reinstall the gun on the manifold using the four screws (13). Start the threads of all four screws. Tighten the front two screws first, and then tighten the back two. Torque all four screws evenly to 65 in-lb (7.3 N•m).

313516C

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Contents
Automatic AirPro Spray Guns Important Safety InstructionsModels ContentsFire and Explosion Hazard Pressurized Equipment Hazard General Metal Applications Selection ChartsWood Applications High Wear ApplicationsGun Selection Hvlp GunsAir Caps Proper Needle/Nozzle SelectionConventional Guns Atomizing Air Fan Air Air FlowAir Flow Maximum HVLP/Compliant inlet manifold pressure Ventilate Spray Booth InstallationConfigure Gun and Manifold Circulating SystemGround System Install Air FittingsReciprocating Arm Rod Mount Mount GunStationary Support Retrofit Adapter Plate Mount Retrofit Adapter PlateConnect Air Line SetupConnect Fluid Hose Position Air Cap Flush Spray GunSuggested Starting Settings Atomization Adjust Spray PatternFan Air psi Spray GunAir Pressure Regulator Operation Pressure Relief ProcedureApply Fluid IncorrectDaily Gun Care Clean and Flush Gun General System MaintenanceGeneral Troubleshooting TroubleshootingProblem Cause Solution Spray Pattern Troubleshooting Disassembly ServiceAlternate Fluid Control Shown Reassembly 17† 21† Alternate Fluid Control 20† 22† 36† 24a 25a PartsGasket General Metal Applications Repair KitsNozzle Wood Applications High Wear ApplicationsPart Description Qty Manifold with bottom fluid portsPart No C342 Side Fluid Ports and Fan Adjustment ValveNot shown, optional size Not sold separately Part No only Description Qty106 Accessories Inline Fluid Filter 24B707 Hvlp Pressure Verification KitSpray Tip Filters Count Carton Pack DescriptionManifold Models 288217 or 288218, All Gun Models DimensionsManifold Model 288221, All Gun Models Manifold Model 288160 or 288211, All Gun Models Manifold Model 288223 or 24C342, All Gun ModelsMounting Hole Layouts 23.4 mm 10.2 mm 53.3 mm 50 in .7 mm Mounting hole 216 23.4 mm 10.2 mm 27.9 mm 375 in .5 mm Mounting hole Retrofit Adapter Plate Triggering Speed Technical DataSound Data Cylinder Air Fluid Pressure Air Pressure Msec to fullyGraco Information Graco Standard WarrantyGraco Headquarters Minneapolis
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