Producto: EXCAVATORModelo: 330B L EXCAVATOR 6DRConfiguración: 330B L Excavator 6DR00001-UP (MACHINE) POWERED BY3306 Engine

Pruebas y Ajustes308B, 311B, 312B, 315B, 317B, 318B, 320B, 322B, 325B, 330B, M325B and W330B ExcavatorsEngine and Pump ControlNúmero de medio -RENR1998-06 Fecha de publicación -01/10/2004 Fecha de actualización -06/10/2004

i01261370

Proportional Reducing Valve - Calibrate

SMCS - 5473-524-QY

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Illustration 1 g00667434

This function is used to calibrate the proportional reducing valve. This calibration must be performed whenthe proportional reducing valve or the controller is replaced.

Note: For proper operation of this function, the engine must be running with the engine speed dial switch inposition 10 and the hydraulic oil must be at approximately 50 °C (122 °F).

Attach a 4900 kPa (711 psi) pressure gauge to the power shift pressure port of the main pump.1.

Place the backup switch in the AUT position.2.

Activate the service mode in order to calibrate the proportional reducing valve.3.

Enter service code 71.

First, display (1) indicates the calibration point. "H" is displayed for the high pressure point and "L" isdisplayed for the low pressure point. The value of the correction is the last digit that is displayed.

4.

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The calibration is performed at the following two points:

High pressure point 2500 kPa (363 psi)

Low pressure point 500 kPa (73 psi)

Perform the following operations in order to calibrate the low pressure point and the high pressurepoint.

Depress fine control mode switch (4) in order to shift the blinking character. Position the blinkingcharacter to the third position from the right.

a.

Depress boom priority mode switch (2) in order to shift the calibration point. Shift to the highpressure point. "71H0".

b.

Depress swing priority mode switch (3) in order to shift the calibration point. Shift to the highpressure point. "71L0".

c.

Depress fine control mode switch (4) in order to shift the position of the character that isblinking. Shift the position of the character that is blinking to the position to the right.

d.

Depress boom priority mode switch (2) or swing priority mode switch (3) in order to locate thepoint that provides the most adequate pressure gauge reading.

e.

When boom priority mode switch (2) is depressed, the power shift pressure will INCREASE by 1step.

f.

When swing priority mode switch (3) is depressed, the power shift pressure will DECREASE by1 step.

Note: The power shift pressure changes approximately 9 kPa (1.3 psi) per step.

g.

5.

Set the increments of the step for the power shift pressure.

Depress travel alarm cancel switch (6) in order to set the new values.

When the new value is set, the position of the blinking character does not change. The thirdposition from the right flashes "H" to "L".

a.

6.

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Thu Oct 07 2010 18:44:53 GMT-0300

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