Graco 309550Y important safety instructions Piston, Remove Front End

Page 32

Repair

Piston

1. Follow Pressure Relief Procedure, page 15.

6. Liberally lubricate piston o-rings. Reinstall piston.

Shaft is keyed for proper assembly. Push firmly to seat piston.

2. Disconnect air (D) and remove fluid manifold (M).

M

D

TI2554A

3. Remove Front End, page 27.

4. Unscrew cylinder cap (5) and inspect o-ring (14).

5

14

TI2430A

5. Push piston shaft to remove piston (15). Inspect piston o-ring (16) and shaft o-ring (17).

15

16

17

TI2431A

TI2432A

7. Install cylinder cap (5).

5

TI2430A

8. Attach Front End, page 28.

9. Attach fluid manifold. Connect air. Return gun to

service.

32

309550Y

Image 32

Contents Plural Component, Impingement Mix Air Purge Spray Gun Contents Manual ConventionsList of Models/Mix Chamber Selection Guide Round Pattern GunsFlat Pattern Guns Flat Pattern Stud Wall Gun No., Series In. mmIn. mm 1000 psi MPa, 70 bar 249525 249526Spatter Pattern Gun Wide Round Pattern GunFour-Hose Gun Non 11 Ratio GunsPersonal Protective Equipment Fire and Explosion Hazard Overall View KeyPiston Safety Lock Isocyanate HazardKeep a and B Components Separate GroundingLoss of Air Pressure Follow Pressure Relief Procedure,Turning Air Cap Setup Resin ISOSetup Shutdown Pressure Relief Procedure Optional Configurations Optional Fluid ManifoldPosition Remove Front End,Follow Pressure Relief Procedure, page 15. Also Optional Hose PositionFlat Spray Tips Maintenance Clean Outside of Gun Clean Air CapClean Muffler Clean Fluid ManifoldClean Mix Chamber Nozzle Clean PassagesClean Impingement Ports Nozzle Drill Bit SizesImpingement Port Drill Bit Sizes CbipTroubleshooting Problem Cause SolutionProblem Cause Solution Gun Detriggered Air Purging Theory of OperationGun Triggered Fluid Spraying Cutaway View Repair Tools RequiredLubrication Remove Front EndAttach Front End X ZMix Chamber and Side Seal Cartridges 18 B Check Valves Piston Piston Safety Lock Air ValveParts Check Valve 26 DetailPart No. Description Qty Round Pattern Guns,See Flat Pattern Guns, See Supplied Tools,Detail Views Mix Chamber Kits Round Pattern GunsFlat Pattern Guns Mix Chamber Part No. Reference GuideFlat Tip Kits Gun Repair KitsCheck Valve Filter Screen Kits Flat Tip Part No. Reference GuideDrill Bit Kits Kit Part No Qty in Kit Drill Bit Size Illustration NominalAir Purge Handle Cleanout Drill Kit Drill Bit Kit119386 248969Accessories Wide Pattern Mix Chamber KitsStainless Steel Side Seal Kits Polycarballoy Side Seal KitsExtension Tip Kits Extension Tip Seal KitsExtension Tip Air Cap Kit Flat Pattern Stud Wall KitSpatter Conversion Kit Solvent Flush Canister KitPour Nozzle Kit Gun CoverCirculation Manifold Tip Cleanout ToolGun Cleaning Kit Category Data Technical DataAir Flow Data in scfm m3/min Toll Free Graco Standard WarrantyGraco Information