Graco Inc GX-7A, 311321H, GX-7 400, GX-7 DI Remove valving rod. Rod Draw Bar Valving Rod

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11.Remove valving rod. Rod Draw Bar

Valving Rod

Repair

residual chemical from metal components. Use cotton swabs soaked in gun cleaner to clean plastic components.

16. Coat threads and mating surfaces of gun block and gun block bracket with Lubriplate

Rear Stop

grease, and reassemble.

17. Inspect gun block for damage.

FIG. 24: Remove Valving Rod

a.Depress trigger lever and hold.

GX-7 DI model only: loosen piston stop locknut until it disengages from thread on valving rod.

b.Use 5/16 in. nut driver to unthread rod draw bar and valving rod from rear of gun.

c.When threads disengage remove assembly by hand.

12.Inspect valving rod for damage and replace as required. Clean and remove any buildup of mixed material from rod using cloth soaked in gun cleaner or fine steel wool.

If valving rod is replaced, it is recom- mended to reset forward stop.

13.Disconnect air supply.

14.Remove gun block retaining screw. Care- fully slide gun block away from air cylinder. If dried chemical is built up on gun block, remove dried chemical before you remove gun block.

15.Clean all components thoroughly. Use brushes and clean-out tools to remove

311321H

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Contents GX-7 Important Safety Instructions311321H Models ContentsPersonal Protective Equipment Fire and Explosion Hazard Pressurized Aluminum Parts Hazard Model GX-7 DI Overall ViewModel GX-7A Trigger Model GX-7Locknut Valving Rod Rear Stop Gun Block Air Cap ValveGX-7A Centerline Components Centerline ComponentsGX-7 400 Centerline Components GX-7A Mixing Module Mixing ModuleKeep a and B Components Separate Safety PositionOperation Basics Isocyanate HazardDisconnect Air Hoses Disengage Safety StopAir Hose Connection Connect Air HosesManual Valves Installation and RemovalCoupling Block Remove Coupling Block Air Inlet ConfigurationOptional Configuration Do not Overtighten Mixing Module and PCD InstallationGX-7 DI Model Only Valving Rod AdjustmentGX-7A and GX-7 400 Models Only Initial Set Up Daily Shutdown Daily Start-upTrigger Gun Pressure Relief ProcedureClean Spray Gun Procedure MaintenanceGun Service Kits Flush Gun Remove Centerline Components Service Screen ScrewRepair Remove valving rod. Rod Draw Bar Valving Rod Install Centerline Components GX-7 DI Shown Replace End Cap and Air Piston AssemblyReplace Trigger Valve O-Ring Replace Trigger Valve O-RingsUnthread Cap from PCD Body Clean Mixing ModuleInstall Mixing Module Install Mixing ModuleGX-7A Model Shown Clean Pattern Control DiscParts GX-7A Model Final AssemblyModule see GX-7A Mix Mod GX-7A Model Final AssemblyNo. Part No. Description GX-7 DI Model Final Assembly No. Part No. Description Qty GX-7 DI Model Final AssemblyModule see GX-7 DI Model Specifications , GX-7 400 Model Final Assembly Module Kit , GX-7 400 Model Final AssemblyGX-7A Model Handle Assembly Description GX-7 Model Handle AssemblyGX-7 DI Model Handle Assembly Description Qty GX-7 DI Model Handle AssemblyGX-7 400 Model Handle Assembly GX-7 400 Model Handle Assembly All models Coupling Block AssemblyGX-7A Mix Module Kit SpecificationsTip Set-Up Chart for GX-7A ModelModule Only Size Ref Module Kits Cleanout Drill Iso PortGX-7 400 Mix Module Kit Quantity In/mmTip Kits for GX-7 400 Gun No. Ref Quantity Set-up Chart for GX-7 400 ModelRound Spray Pattern GX-7 DI Model SpecificationsModule/Tip Data for Chemical Sprayed at 2500 PSI Output Pattern Lbs/minRound Tip Kits Size Quantity Tip KitsTool Kits For GX-7A and GX-7 DI ModelsCategory Data Technical DataGraco Standard Warranty