Graco Inc 224200, 308131, 224400 Fluid Adjustment Assembly Repair, 45c 45a 45b 45d 41 45e

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Service

Fluid Adjustment Assembly Repair

1.Prepare the gun for service as instructed on page 22.

2.Using a 14 mm socket wrench, remove the fluid adjustment assembly (45). See Fig. 21.

3.Turn the stem (45a) fully clockwise and remove the sleeve stop (45e).

4.To completely disassemble the fluid adjustment assembly, the sleeve stop (45e) must be assembled back on to the stem (45a). Turn the stem until the sleeve is protruding about 0.4 inches (10 mm).

5.To remove the sleeve (45d), hold the cap (45c) and turn the sleeve stop (45e) counterclockwise with a wrench.

6.Remove the stem (45a) and o-ring (45b).

7.Repair or replace any damaged parts. Lubricate the o-ring (45b) with petroleum jelly.

8.Carefully apply low strength (purple) Loctite or equivalent thread sealant to the sleeve (45d) external threads. Turn the sleeve in with the sleeve stop (45e) until it bottoms out, then back it out 1/8 turn.

CAUTION

Do not allow Loctite to get onto the stem (45a) during assembly or the stem will not turn after assembly.

DETAIL

0636A

45

45c

45a

45b 45d

44

39

7 41 23

45e

40, 42

Lubricate o-rings with petroleum jelly

Carefully apply low strength (purple) Loctite or equivalent to sleeve (45d) external thread. Turn sleeve in with sleeve stop (45e) until it bottoms out, then back out 1/8 turn. Allow Loctite to cure overnight.

Do not remove u-cup (42) unless damaged. Install with lips facing into handle. Tighten packing nut (40) until it bottoms.

0387A

9.	Place the fluid adjustment assembly on the work-	Fig. 21
9.	Place the fluid adjustment assembly on the work-
	bench with its threaded end facing down and allow
	the Loctite to cure over night.
10.	After the Loctite has cured, install the fluid
	adjustment assembly into the gun. Tighten the
	adjustment knob (45c) with the 14 mm socket
	wrench.

30 308131

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Contents Part No , Series B Air Spray Gun with four-finger trigger 308131Part No , Series B Air Spray Gun with two-finger trigger Read and Keep for Reference308131 Table of Contents SymbolsFIRE, EXPLOSION, and Electric Shock Hazard Pressurized Equipment Hazard Hazardous Area InstallationNon-Hazardous Area KEYInstalling the System Ventilate the Spray BoothConnect the Air Line Refer to Fig Connect the Exhaust Tube Ground the SystemFIRE, EXPLOSION, Electric Shock Hazard Check the Electrical Grounding See Fig Page Operation Pressure Relief ProcedureOperating Checklist Filter the FluidSelecting a Fluid Nozzle and Air Cap Operating the Spray GunComponent Rupture Hazard Atomizing Air Valve Adjustment Fine Adjustments of the Spray GunShutdown MaintenanceDaily Care and Cleaning FIRE, EXPLOSION, and Electric Shock HazardFlush the Spray Gun Clean the Air Cap and Fluid NozzleProcedure Equipment neededTroubleshooting Spray Pattern TroubleshootingProblem Cause Solution Gun Operation Troubleshooting Electrical Troubleshooting See Check the Electrical GroundingElectrical Troubleshooting with SVR Electrical Tests Test Gun Resistance See FigTest Power Supply Resistance See Fig Test Resistor Stud Resistance See FigService Prepare the Gun for ServiceAir Cap/Nozzle/Resistor Stud Replacement Electrode Needle Replacement Barrel Removal Fluid Packing Removal Fluid Packing Rod Repair Power Supply Removal and Replacement Power Supply AdjustmentTurbine Alternator Removal Replacement Barrel InstallationFan Air Adjustment Valve Repair DetailFluid Adjustment Assembly Repair 45c 45a 45b 45d 41 45eAtomizing Air Valve Removal and Replacement Air Trigger Valve RepairES ON-OFF Valve Repair Moving Parts Hazard308131 Parts Detail aPart No , Series B Electrostatic Air Spray Gun, with four-finger triggerExtended Air Fitting AccessoriesConductive Air Supply Hose black Air Shutoff ValveFluid Hose Assemblies Nylon Grounding Clamp and WireSafety Warning Signs MegohmmeterGUN Systems Gun SystemCategory Data Technical DataManual Change Summary FCC ID JHI1Graco Standard Warranty Graco Phone NumberToll Free