Hitachi 232133 manual Drain Valve, Repair, Replacement

Page 30

Drain Valve

WARNING

INJECTION HAZARD

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

1.Relieve pressure.

2.Turn handle (54) to closed position. Drive out pin (53). Remove handle.

3.Remove base (52).

4.Unscrew drain valve assembly (51). gasket (55) and seat (56) will stay in valve.

55

56 2

51

Repair

1.Unscrew spring retainer from valve body. Remove spring, washers and stem/ball. Clean any debris from ball or seat area.

2.If replacing gasket (55) or seat (56), pry out gas- ket.

NOTE: Whenever gasket (55) is removed, replace it with a new one.

3.Place seat (56) in drain valve assembly (51) so lapped side is toward ball. Apply a small amount of grease to new gasket (55) and install it in drain valve assembly.

NOTE: The gasket will protrude from the end of the valve until the valve is tightened into pump, which correctly seats the gasket.

1

1 Torque into pump manifold to

52 3

53

Replacement

1. Apply a small amount of thread sealant (110110)

onto drain valve assembly (51) threads. Tighten

the valve into the pump manifold (229) to 185 in-lb

(21 N m).

185 in-lb (21 Nm)

2 Apply thread sealant

54 4

2. Lightly grease face of base (52) and install base.

3Apply grease to face of base

4Handle shown in closed position

Fig. 27	7839A

Turn stem so pin hole is vertical.

3. Securely install handle (54) and drive pin (53).

30 308801

Image 30

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 HazardSetup Motor TestArmature Short Circuit Test Motor Brushes Test brushesElectric Shock Hazard Displacement Pump Repairing 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 Replacement Drain ValveRepair Technical Data DimensionsAccessories 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