Graco Inc TI14450a, 313872B, 257999 Pistons and Bulkhead, See Attach Front End procedure

Page 35

4.Install purge rod into rear of fluid housing. Leave 3/4 in. of ball socket end of purge rod extended out of housing as shown in FIG. 31.

5.Install check valve assembly. See Clean Check Valves on page 27 for detailed assembly instruc- tions.

6.Install Throat Seal Liquid bleed port screw (16b).

7.Install orifice components (25). Install orifice

cap (25a) and torque to 20-30 in-lb (2.26-3.39 N•m). Repeat for opposite side.

8.See Attach Front End procedure.

Attach Front End

NOTICE

Proper attachment of front end is critical. Do not operate gun if front end is loose or not snug against body. Improper attachment can cause slow leaks.

1.Engage piston safety lock.

2.Liberally lubricate o-rings and install on fluid housing (AK).

3.Apply thin coat of TSL to purge rod.

4.Install fluid housing onto purge rod.

5.Insert end of purge rod into ball socket in piston shaft.

ti14482a

FIG. 31

Repair

6.Push fluid housing flush to the gun body. Rotate fluid housing 45 degrees clockwise to engage fluid housing slots.

AK

ti14483a

7.Torque pour tip (19) to 60-70 in-lb (6.7-9.1 N•m).

8.Use hex nut driver to install fluid manifold (AD). Torque fluid manifold bolt to 20-30 in-lb

(2.26-3.39 N•m). Connect air quick coupler (AC).

AD

AC

TI14484a

9. Connect signal cable.

Pistons and Bulkhead

User should have piston seals kit 24D312 available before performing this procedure.

1.Follow Pressure Relief Procedure, page 22.

313872B

35

Image 35

Contents EP Gun Important Safety InstructionsContents Related Manuals Models Orifice Flow Area Ratio ChartEP Fixed Orifice Flow Data Fixed Orifice Flowrate DataFlowrate gpm Variable Orifice Flowrate DataOrifice Diameter Variable Orifice Flowrate Data 1500 PSI Variable Orifice Flowrate Data 2000 PSI Toxic Fluid or Fumes Hazard Fire and Explosion Hazard Important Two-Component Material Information Red and B Blue Components Changing MaterialsTrigger Lock Piston Safety LockThroat Seal Liquid GroundingHook Support Loss of Air PressureHook Support 313872B Key Component IdentificationCutaway View Gun Detriggered Theory of OperationGun Triggered Fluid Pouring Setup Order to increase the pressure, turn the needle clockwise Adjust OrificesPerform Bleed Throat Seal Liquid Cartridge pro- cedure. See Optional Hose Position Follow Pressure Relief Procedure,Pressure Relief Procedure Long Term Shutdown Perform Pressure Relief Procedure onShutdown Short Term ShutdownBleed Throat Seal Liquid Cartridge MaintenanceSupplied Tool Kit LubricationFlush Gun Clean Outside of GunFollow Pressure Relief Procedure Clean Breather PlugClean Fluid Manifold Clean Check Valves Remove Front End, see Clean Fluid Housing PassagesFollow Pressure Relief Procedure on Clean Orifice Perform Replace Throat Seal Liquid Cartridge, Replace Mix Chamber and Front SealReplace Throat Seal Liquid Cartridge RepairTools Required Perform Bleed Throat Seal Liquid Cartridge pro- cedure, see Remove Front End Perform Pressure Relief Procedure,Assemble Front End Disassemble Front EndPistons and Bulkhead See Attach Front End procedureAttach Front End Access Pistons Bulkhead Shaft Purge Rod 26-3.39 Nm. See Component Identification on Solenoid ValveProblem Cause Solution TroubleshootingProblem Cause Solution Electrical Diagram Model 257999 Shown PartsRing Orifice, Auto Hand-HeldOrifice, Auto Hand-Held Kits on KitsSee Orifice Orifice 24C751 Orifice Housing 24C756 Ring 24C805 24C815 Kits Kits Located inside back cap Model Iso Model Polyol Orifice Kit Orifice KitsImpingement Kit Type and Kit Number Kit Illustration Drill Bit KitsKit Drill Bit Qty Orifice Size Number Ref Part Complete O-ring Placement GuideAccessories 248299 5.0 gal liter Pail Solvent Flush Canister KitSolvent Flush Pail Kit Models without Handle 6.4 lb 2.9 kg Technical DataRef Dimension, in. mm DimensionsTechnical Data 313872B Graco Information Graco Standard Warranty