Graco Inc 218-026 ES ON±OFF Valve Removal & Replacement, Fluid Adjusting Screw Replacement, KEY81

Page 25

SERVICE

ES ON±OFF Valve Removal & Replacement

1.Loosen and remove the nut (35). Remove the lever (37) and washer (36). See Fig 22. Insert the hex head wrench into the hex end of the valve (39), and turn it to loosen and remove the valve.

2.Clean and inspect parts for wear or damage. Re- place if necessary. Lubricate the o±rings (38) and valve (39) with petroleum jelly.

3.Install the regulator disc (4) so that the beveled face of the disc faces into the valve (39).

4.Install the valve (39) with the regulator disc (4) and o±rings (38) into the gun handle (2) so that the larger opening of the valve cylinder faces toward the front of the gun handle (2).

5.Install the wave washer (36), lever (37), and nut (35) on the valve stem. Tighten the nut (35) and torque it to 0.225 NSm (2 in±lb).

Fluid Adjusting Screw Replacement

Remove the retaining ring (23) from the fluid adjusting screw (28). Refer to the Parts Drawing. Unscrew and re- move the fluid adjusting screw from the back of the gun handle. Install the new assembly.

KEY

2

Key

37

Valve Lever

4

Regulator Disk

38

O±Ring

35

Nut

39

Air Valve

36Wave Washer

 

39

2

 

 

38

 

38

 

 

 

4

 

36

37

35

Torque to 0.225 NSm (2 in±lb)

Fig 22

Muffler and Check Valve Replacement

1.Remove the screw (71), adapter retainer (70) and bulkhead retainer (85) from the gun handle. See Fig 23.

2.Pull the muffler (80) from the gun handle and replace with a new muffler.

3.Insert a 3.18 mm (0.125 in.) rod into one of the holes in the valve check retainer (78) and pry it out of the adapter retainer (70). Be ready to catch the ball (77) and spring (81).

4.Install a new ball (77) and spring (81) in the adapter retainer (70) and snap the valve check retainer (78) back into place on the adapter retainer.

5.Install the adapter retainer (70) and bulkhead retainer (85) on the gun handle using the screw (71).

71

80

Apply sealant to outside surface

70

77

KEY81

70 Adapter Retainer

78

71Screw

77 Ball

78Valve Check Retainer

80Muffler

81Spring

85 Bulkhead Retainer

85

Fig 23

￿￿7￿6￿8 ￿5

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Contents Rev. AE Manual MID±RANGE ElectrostaticPart Number 218±026, Series E Read and Retain for Reference Terms Table of ContentsEquipment Misuse Hazard Hose SafetyHazardous Fluid Hazard Ventilate the Spray Booth Flushing and Cleaning SafetyFire or Explosion Hazard HOW the Electrostatic AIR Spray GUN WorksNON±HAZARDOUS Area Hazardous Area Typical InstallationKEY Ventilate the Spray Booth InstallationConnect the Fluid Line Refer to the Typical Check the Electrical Grounding See Fig Operation Operating ChecklistFilter the Fluid Spraying OperationAdjust the Spray Pattern Install the Fluid Nozzle and Air CapDaily Care and Cleaning MaintenanceClean the Air Cap and Fluid Nozzle Follow the Pressure Relief Procedure Warning onFlush the Spray Gun Problem Cause Solution Improper Spray Pattern Spray Pattern Troubleshooting ChartProblem Cause Solution GUN Operation Troubleshooting ChartElectrical Troubleshooting Chart Test Gun Resistance Test Power Supply ResistanceTest Resistor Stud Resistance Electrode Replacement Gun DisassemblyResistor Stud Replacement Barrel Removal Fluid Needle Packing Replacement45d Service45f 45c18b Power Cartridge Replacement3c 2 3a Turbine Alternator Removal Air Valve Replacement Fan Air Valve ReplacementFluid Adjusting Screw Replacement ES ON±OFF Valve Removal & ReplacementMuffler and Check Valve Replacement KEY81Parts Drawing Ref No Power CartridgeRef No 59, Tool Kit Includes items 59a±59h 59f 59e 59d 59g 59c 59b59a218±014 HANDLE, gun Includes item 2a Parts List179±400 18b 186±127Repair Kits Service Information Technical DataHOW to Order Replacement Parts Assembly Changed Status No. Part No NameAccessories 218±123 Electrostatic System Filter AIR or Paint 202±271218±124 Electrostatic System PRO4000H GUN Electrostatic High Conductivity KIT 222±029Important Phone Numbers Graco PRO4000 Warranty and Disclaimers
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