Hitachi 231580 manual Drive Housing, Connecting Rod, Crankshaft

Page 24

Drive Housing, Connecting Rod, Crankshaft

WARNING

INJECTION HAZARD

To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief

Procedure on page 9.

NOTE: Inspect parts as they are removed. Replace parts that are worn or damaged.

1.Remove the displacement pump. See page 21.

2.Remove the pressure control (64). See page 26.

3.Turn the displacement pump rod (107) so the pin hole aligns with the bottom drive housing screw

(5). See Fig. 23. Remove the three drive housing screws (5). Also see Fig. 24 on page 25.

107

5

Fig. 23

01074

4.Remove the two motor screws (5). See Fig. 24 on page 25.

5.Tap the lower rear of the drive housing (11) with a plastic mallet to loosen the motor. Pull the drive housing straight off the motor.

CAUTION

Do not allow the gear (16) to fall; it may stay at- tached to the drive housing or to the motor.

Do not lose the thrust balls (11a or 4a) or let them fall between the gears, which will damage the drive hous- ing if not removed. The balls, which are heavily covered with grease, usually stay in the gear recesses, but could be dislodged. If the balls are not in place, the bearings will wear prematurely.

6.Remove and inspect the crankshaft (12) and the connecting rod (15).

7.Install the connecting rod.

8.Lubricate the inside of the drive housing bearing with SAE non-detergent oil. Pack the roller bearing and gears with the grease supplied.

NOTE: The gears and bearings between the drive housing (11) and motor front end bell (C) should con- tain a total of 3 fl. oz. (29 cc) of grease.

9.Route the wire harness (A) through the motor passages to the junction box (59).

10.Place the large washer (12a) and then the small washer (12b) on the crankshaft (12).

11.Lift the crank to the top of the stroke and insert crankshaft (12). Align the gears and push the drive housing (11) straight onto the motor and the locat- ing pins. Install the screws (5). Torque to 80 in±lb (9 N.m).

12.Install the displacement pump. See page 21.

13.Install the pressure control (64). See page 26. Install the front cover (13).

￿4 ￿￿87￿5

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Contents 308715 PerformanceTable of Contents SymbolsInjection Hazard Equipment Misuse Hazard Fire Skin Injection Explosion HazardComponent Function and Identification Model 231580 shownSetup Fire and Explosion HazardHow to use the gun trigger safety How to use the pressure controlHow to use the pressure drain valve OperationHow to use the RAC IV tip guard How to remove a tip clogProcedure on Pressure Relief Procedure Startup ProcedureStartup Engage the gun safety latch Shutdown and Care Shutdown and CareWhen to Flush How to FlushFollow the Pressure Relief Procedure on FlushingTroubleshooting Basic Problem SolvingIntermediate Problem Solving No output motor runs but pump does not stroke Spray Pattern Variations Setup Motor TestArmature Short Circuit Test General Repair Information Tool ListMoving Parts Hazard HOT Surface HazardMotor Brushes Test the brushes Displacement Pump Repair Repairing the pumpRemoving the pump See Fig Motor Power Supply Cord On/Off SwitchMotor Start Board Drive Housing, Connecting Rod, Crankshaft REF a Pressure Control Pressure Transducer Suction HoseReplacement Drain ValveRepair Technical Data DimensionsGraco Phone Number French Spanish German Greek Korean EnglishSprayer Parts Drawing Model 231580, Series a Model 232654, Series aSprayer Parts List Model 231580, Series A, Model 232654, Series aDescription Qty 644a 12b Motor Brush and Spring Replacement Kit Graco Warranty Additional Warranty CoverageLimitation of Liability
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