Graco Inc 313872B, 257999, 24C934, 24C932, 24C933, TI14450a Access Pistons Bulkhead Shaft

Page 36

Repair

2. Use hex nut driver to remove fluid manifold (AD).

AD

TI14463a1

3.Disconnect signal cable.

4.Remove Front End, see page 33.

5.Disconnect air quick coupler (AC).

AC

TI14463a1

6.Unscrew piston safety lock assembly and remove. Inspect o-ring and replace if necessary.

TI14465a

7.Place 1/2 in. socket on the piston shaft through the front of the gun body. Entering through the rear of the gun body, place a 3/4 in. socket with extension on the rear piston. Hold piston shaft in place and remove the rear piston. Inspect rear piston o-ring and replace if necessary.

Access the

Pistons and

Bulkhead

Piston

Shaft

TI14465a

8.Entering through the rear of the gun body, place a 3/4 in. socket with extension on the bulkhead. Remove the bulkhead. Inspect bulkhead o-rings and replace as necessary.

9.Push piston shaft towards rear of gun to remove front piston and piston shaft from the gun body.

10.Use a 1/2 in. socket on the piston shaft and

15/16 in. wrench on the front piston to remove front piston from piston shaft.

11.Inspect o-rings. Replace if worn or damaged. Liber- ally lubricate o-rings then reinstall.

12.Apply medium strength threadlocker to threads then install front piston onto piston shaft. Torque to

100-110 in-lb (11.3-12.4 N•m). See Component Identification on page 16.

13.Install piston shaft and piston assembly into gun body. See Component Identification on page 16.

14.Install bulkhead onto piston shaft. Torque to

100-110 in-lb (11.3-12.4 N•m). See Component Identification on page 16.

15.Apply medium strength threadlocker to threads then install rear piston onto piston shaft. Torque to

100-110 in-lb (11.3-12.4 N•m). See Component Identification on page 16.

16.Install piston safety lock. See Component Identifi- cation on page 16.

17.Attach Front End, see page 35.

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313872B

Image 36

Contents Important Safety Instructions EP GunContents Related Manuals Orifice Flow Area Ratio Chart ModelsFixed Orifice Flowrate Data EP Fixed Orifice Flow DataVariable Orifice Flowrate Data Orifice DiameterFlowrate gpm 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 Changing Materials Red and B Blue ComponentsPiston Safety Lock Throat Seal LiquidGrounding Trigger LockLoss of Air Pressure Hook SupportHook Support 313872B Component Identification KeyCutaway View Theory of Operation Gun Triggered Fluid PouringGun Detriggered Setup Adjust Orifices Perform Bleed Throat Seal Liquid Cartridge pro- cedure. SeeOrder to increase the pressure, turn the needle clockwise Follow Pressure Relief Procedure, Optional Hose PositionPressure Relief Procedure Perform Pressure Relief Procedure on ShutdownShort Term Shutdown Long Term ShutdownMaintenance Supplied Tool KitLubrication Bleed Throat Seal Liquid CartridgeClean Outside of Gun Flush GunClean Breather Plug Clean Fluid ManifoldFollow Pressure Relief Procedure Clean Check Valves Clean Fluid Housing Passages Follow Pressure Relief Procedure onRemove Front End, see Clean Orifice Replace Mix Chamber and Front Seal Perform Replace Throat Seal Liquid Cartridge,Repair Tools RequiredReplace Throat Seal Liquid Cartridge Perform Bleed Throat Seal Liquid Cartridge pro- cedure, see Perform Pressure Relief Procedure, Remove Front EndDisassemble Front End Assemble Front EndSee Attach Front End procedure Attach Front EndPistons and Bulkhead Access Pistons Bulkhead Shaft Purge Rod Solenoid Valve 26-3.39 Nm. See Component Identification onTroubleshooting Problem Cause SolutionProblem Cause Solution Electrical Diagram Parts Model 257999 ShownOrifice, Auto Hand-Held RingOrifice, Auto Hand-Held Kits See OrificeKits on Orifice 24C751 Orifice Housing 24C756 Ring 24C805 24C815 Kits Kits Located inside back cap Orifice Kits Impingement Kit Type and Kit NumberModel Iso Model Polyol Orifice Kit Drill Bit Kits Kit Drill Bit Qty Orifice Size NumberKit Illustration Complete O-ring Placement Guide Ref PartAccessories Solvent Flush Canister Kit Solvent Flush Pail Kit248299 5.0 gal liter Pail Technical Data Models without Handle 6.4 lb 2.9 kgDimensions Ref Dimension, in. mmTechnical Data 313872B Graco Standard Warranty Graco Information