Graco Inc 3A0149C Repair Kits, Fan Valve Replacement, Complete Gun Packing Repair

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Repair

Repair

Repair Kits

NOTE:

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*).

Plastic Seat Repair Kit 249424 and Carbide Seat Repair Kit 249456 are available and can be used with both Model G15 guns and Model G40 guns. For best results, use all new parts in the kit. Kit parts are marked with a symbol in the Parts list, for example (5c†).

Plastic Seat Kit 249424 is intended for low pressure 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. 34.

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 in-lb (10.5 N•m).

1 4

C

1 A

1 Torque to 90 in-lb (10.5 N•m).

TI6576A

FIG. 34

Complete Gun Packing Repair

Disassembly

Seat Repair

NOTE:

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. 35.

6

33

21

TI6568A

 

 

 

FIG. 35

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).

4.Inspect the o-rings (5e*, 5f*, and 5g*) in place. Carefully remove the o-rings from the diffuser hous- ing (5a) and replace if necessary.

5.Remove the seat nut (5d), seat (5c) and seat gasket (5b, carbide models only) using a 7/32 in. hex wrench.

6.Inspect the seat (5c) and seat gasket (5b) and replace if necessary.

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3A0149C

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Contents Model G15 Model G40 Model G40 w/RAC tipContents ModelsRelated Manuals Fire and Explosion Hazard Equipment Misuse Hazard Grounding InstallationTypical Installation Ventilate the Spray Booth Air Line Fluid LineSetup Reverse-A-CleanRAC Tip Assembly Pressure Relief Procedure OperationTrigger Lock EngageddisengagedClose Open Spray Pattern AdjustmentHow the Air-Assisted Spray Gun Operates Correct Hvlp Operation Fluid ApplicationIncorrect Daily Gun Care, Flushing, and Cleaning Flushing and Cleaning General System MaintenanceFluid Filter Maintenance TI6729A Reverse-A-CleanRAC Tip EngagedDisengaged TI6580A DisengagedTroubleshooting Problem Cause SolutionTroubleshooting Fan Valve Replacement RepairRepair Kits Complete Gun Packing Repair13‡ 14‡ 5g* 5cNeedle Repair Fluid Tube Replacement Air Valve RepairRepair 3A0149C Reassembly 5b carbide only Parts Part No. Description Qty Washer PtfeDescription AIR CAPParts 3A0149C Part No C857, G40 Gun with RAC Tip Ref. No. Part No. Description Qty TIP GUARD/AIR CAP AssySpray Tip Selection Chart Spray Tips, for use with G15/G40 Air CapAAM Fine Finish Spray Tips GG4 Industrial Spray TipsLTX RAC Spray Tips RAC SwitchTips, for use with G40 RAC Air CapAAF Fine Finish Pre-Orifice Spray Tips FFT Fine Finish RAC Spray Tips WRX WideRAC Spray TipsAccessories Ultimate Gun Cleaning Kit 15C161 Fan Valve Fine Adjustment KitPlastic Seat Repair Kit SST Seat Repair KitPart Interchangeability Guide Dimensions Model G4010.6 Gun Inlet Pressure PSI Technical DataCategory Data Graco Standard Warranty Graco Information