Graco 309550Y important safety instructions Repair, Tools Required, Lubrication, Remove Front End

Page 27

Repair

Tools Required

Tools needed for complete gun repair:

•adjustable wrench

•flat head screwdriver (included)

•1/8 in. (3 mm) diameter rod

•5/16 hex nut driver (included)

Lubrication

Liberally lubricate all o-rings, seals, and threads. Lubri- cate threads and outside of lock ring (11). See page 43 to order lubricant.

Repair

Remove Front End

WARNING

Read warnings, page 7. Proper attachment of front end is critical. Do not operate gun if front end is loose or lock ring is not snug against handle.

1. Follow Pressure Relief Procedure, page 15.

2. Flush Gun, page 20.

CAUTION

If lock ring (R) is stuck due to material buildup, do not force it by turning entire front end. Locating tabs (Z) may break off. Soak front of gun in solvent to soften cured material and free lock ring.

3. Unscrew lock ring (R) until front end of gun is

loose. Turn fluid housing (F) 1/8 turn counterclock- wise. Unscrew lock ring completely and remove front end of gun.

TI2416A

309550Y

Image 27

Contents Plural Component, Impingement Mix Air Purge Spray Gun Manual Conventions ContentsRound Pattern Guns List of Models/Mix Chamber Selection GuideFlat Pattern Guns 249526 Flat Pattern Stud Wall GunNo., Series In. mm In. mm 1000 psi MPa, 70 bar 249525Non 11 Ratio Guns Spatter Pattern GunWide Round Pattern Gun Four-Hose GunPersonal Protective Equipment Fire and Explosion Hazard Key Overall ViewGrounding Piston Safety LockIsocyanate Hazard Keep a and B Components SeparateFollow Pressure Relief Procedure, Turning Air CapLoss of Air Pressure Resin ISO SetupSetup Shutdown Pressure Relief Procedure Remove Front End, Optional ConfigurationsOptional Fluid Manifold PositionOptional Hose Position Follow Pressure Relief Procedure, page 15. AlsoFlat Spray Tips Maintenance Clean Fluid Manifold Clean Outside of GunClean Air Cap Clean MufflerNozzle Drill Bit Sizes Clean Mix Chamber NozzleClean Passages Clean Impingement PortsCbip Impingement Port Drill Bit SizesProblem Cause Solution TroubleshootingProblem Cause Solution Theory of Operation Gun Triggered Fluid SprayingGun Detriggered Air Purging Cutaway View Remove Front End RepairTools Required LubricationX Z Attach Front EndMix Chamber and Side Seal Cartridges 18 B Check Valves Piston Air Valve Piston Safety LockCheck Valve 26 Detail PartsSee Supplied Tools, Part No. Description QtyRound Pattern Guns, See Flat Pattern Guns,Detail Views Mix Chamber Part No. Reference Guide Mix Chamber KitsRound Pattern Guns Flat Pattern GunsFlat Tip Part No. Reference Guide Flat Tip KitsGun Repair Kits Check Valve Filter Screen KitsKit Part No Qty in Kit Drill Bit Size Illustration Nominal Drill Bit Kits248969 Air Purge Handle Cleanout Drill KitDrill Bit Kit 119386Polycarballoy Side Seal Kits AccessoriesWide Pattern Mix Chamber Kits Stainless Steel Side Seal KitsFlat Pattern Stud Wall Kit Extension Tip KitsExtension Tip Seal Kits Extension Tip Air Cap KitGun Cover Spatter Conversion KitSolvent Flush Canister Kit Pour Nozzle KitTip Cleanout Tool Gun Cleaning KitCirculation Manifold Technical Data Air Flow Data in scfm m3/minCategory Data Graco Standard Warranty Graco InformationToll Free