This function brings the governor actuator and various proportional reducing valves to the maximum sweep outputs and fixed outputs. The outputs of various proportional reducing valves and lamps can be tested. This function allows the activation of each component in order to confirm the operation of the component.
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| Illustration 1 |
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Typical display
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- Enter the service mode. Highlight the second line by using the arrow key.
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| Illustration 2 |
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- The arrow keys are used to scroll through the display in order to show “DEVICE TEST”.
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| Illustration 3 |
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- The third line shows the name of the component that is being tested. The illustration above shows the screen that is accessing the mode for the fixed engine speed. The list of the items that can be tested is shown in table 1.
Table 1
| List Of Items For The Device Test |
| Name Of Device |
Content |
| “ENG SPEED-FIXED” |
Fixed output of the engine speed |
| “ENG SPEED-SWEEP” |
Sweep output of the engine speed |
| “PS PRV-FIXED” |
Fixed output of the power shift pressure |
| “PS PRV-SWEEP” |
Sweep output of the power shift pressure |
| “NFC1 PRV-FIXED” |
Fixed output of the flow limit pressure (AUX) |
| “NFC1 PRV-SWEEP” |
Sweep output of the flow limit pressure (AUX) |
| NFC1 FLOW-FIXED |
Flow fixed output of flow limit pressure |
| NFC1 FLOW-PRESS |
Setting of delivery pressure |
| 2P FLOW-FIXED |
2 pump flow fixed output for flow control proportional reducing valve |
| 2P FLOW-PRESS |
Setting of delivery pressure for calculation of flow when 2 pump flow output is fixed |
| 1P FLOW1-FIXED |
1 pump flow (f2 valve) fixed output for flow control proportional reducing valve |
| 1P FLOW1-PRESS |
Setting of delivery pressure for calculation of flow when 1 pump (f2 valve) flow output is fixed |
| 1P FLOW2-FIXED |
1 pump flow (f2 valve) fixed output for flow control proportional reducing valve |
| 1P FLOW2-PRESS |
Setting of delivery pressure for calculation of flow when 1 pump (f2 valve) flow output is fixed |
| “AEC LAMP-ON/OFF” |
Output of the display lamp for the AEC mode |
| “TRV LAMP-ON/OFF” |
Output of the travel mode of the display lamp |
| “A CANCEL-ON/OFF” |
Output of the travel alarm release display lamp |
| “TRV SPEED-ON/OFF” |
Output of the travel speed solenoid |
“TRV STR-ON/OFF”
NOT ON 312C/ 315C |
Output of the straight travel solenoid |
| “SWING BRK-ON/OFF” |
Output of the swing parking brake release solenoid |
Note: Refer to the appropriate service manual for the tool control of the machine that is being serviced for device tests that are not listed.
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| Illustration 4 |
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- In order to change the output value, highlight the fourth line of the display by using the arrow keys.
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| Illustration 5 |
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- Press the “OK” key while the fourth line is highlighted. The display of the fourth line will change to a numerical value. The numerical value can be increased and decreased by using the arrow keys.
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| Illustration 6 |
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- The “cancel” key is pressed while the fourth line is highlighted in order to exit this mode. The above illustration will be shown when the mode has been exited.
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| Illustration 7 |
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- In order to change between the fixed output and the sweep output, move the area that is highlighted by using the “menu” key. See the above illustration.
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| Illustration 8 |
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- Highlight the fourth line and press the “OK” key.
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| Illustration 9 |
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- The “setting” key is pressed in order to change the status of the sweep output between ON and OFF.
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| Illustration 10 |
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- The “cancel” key is pressed while the fourth line is highlighted in order to exit from the mode of constant output. The mode has been cancelled when the display is shown according to the above illustration.