Hitachi 232133 manual Displacement Pump, Removing pump See, Repairing pump

Page 22

Displacement Pump

NOTE: Packing Repair Kit 235703 is available. Refer- ence numbers of parts included in the kit are marked with an asterisk, i.e., (223*).

Removing pump (See Fig.17)

WARNING

INJECTION HAZARD

To reduce the risk of serious injury, when instructed to relieve pressure, follow Pressure Relief Procedure on page 8.

6.Use a screwdriver to push retaining spring (15) up and push out pin (14).

7.Loosen screws (17). Remove pump (18).

Repairing pump

See manual 308815 for displacement pump repair instructions and parts.

Installing pump (See Fig. 17 and 18)

1Torque to

50 ft-lb (68 N￿m)

2Apply pipe sealant (110110)

12

11

14

48

1 17

47

45

43

Fig. 17

215

15 *214

222

*227

18

36

213

50

2

232132, 232133 shown

7736A

15

201

14

202

Fig. 18

7840A

 

 

 

1.Lightly grease or oil transducer (67). See Fig. 24. Guide pump over alignment pins and pressure transducer. Tap it into position with a soft hammer. Tighten screws (17) to 50 ft-lb (68 N￿m).

2.Align hole in rod (222) with connecting rod assem- bly (12). Use screwdriver to push retaining spring (15) up and push in pin (14). Push retaining spring into place around connecting rod.

1.Relieve pressure.

2.Flush pump, if possible. Relieve pressure. Stop pump with piston rod (222) in its lowest position, if possible. To lower piston rod manually, rotate motor fan blades.

3.Remove filter (48).

4.Models 232132 and 232133. While pulling upward on suction hose (47), unscrew hose from inlet tube (43). Unscrew drain hose (50) from displacement pump nipple (36).

5.Models 232130 and 232131. Remove suction tube (43). Unscrew drain tube (84) from displace- ment pump nipple (36).

WARNING

MOVING PARTS HAZARD

Be sure retaining spring (18) is firmly in groove all around, to prevent pin (14) from working loose. See Fig. 18.

If pin works loose, parts (including pump connect- ing rod or bearing housing) could project into the air and cause serious injury or property damage.

3.Replace o-ring (45) if worn or damaged. See page 29. Reconnect suction and drain hoses (47, 50). Install front cover (11).

4.Tighten packing nut (202) enough to stop leakage, but no tighter. Fill packing nut full with Graco TSL. Push plug (201) into packing nut.

22 308801

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Contents Model 232132 and 232130, Series a 308801Models 232133 and 232131, Series a Read and Keep for ReferenceTable of Contents SymbolsInjection Hazard Fire and Explosion Hazard Fire Skin Injection Explosion HazardComponent Function and Identification DC aSetup Model 232133 ShownHow to use the pressure drain valve How to use the gun safety latchHow to use the pressure control GroundingHow to remove a tip clog Pressure Relief ProcedureHow to use the RAC IV tip guard Injection HazardStartup Adjust spray pattern Fire and Explosion HazardShutdown and Care Flushing When to flushHow to flush Relieve pressureOpen or drain position Troubleshooting Basic Problem SolvingElectrical Intermediate Problem Solving Replace pin if missing. Be sure retainer Unit will not run on generator but does run on AC power Moving Parts Hazard General Repair InformationTool List Fire HazardMotor Test SetupArmature Short Circuit Test Test brushes Motor BrushesElectric Shock Hazard Repairing pump Displacement PumpRemoving pump See Remove three drive housing screws MotorMotor control board removal Motor control board diagnosticsMotor Control Board LED Sprayer Operation Indicates What to do BlinksPower Supply Cord On/Off SwitchDrive Housing, Connecting Rod, Crankshaft Not shown Pressure Transducer Seal InstallationPressure Transducer RemovalSuction Hose Models 232132 Drain Valve ReplacementRepair Dimensions Technical DataAccessories Complete Sprayer Parts Model 232132 and 232133, Series a239769 KIT, pump, displacement 51H 235014 ASSEMBLY, drain valve240519 CONNECTING, rod assy See manualModel 232130 and 232131, Series a Manual 239979CRANKSHAFT, U-695 236352 POTENTIOMETER, pressure adjPhone Number Graco Standard WarrantyAdditional Warranty Coverage Toll Free
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