574B Forwarder Hydraulic System Caterpillar

The following procedure is used to calibrate the fuel level sender on the 574B Forwarder at the minimum fuel level and at the maximum fuel level. This procedure will require the use of the IQANtalk Standard or IQANtalk Professional.

Note: The fuel tank level should be low before you perform this procedure.

1. Park the machine on a level surface.

2. Stop the engine.

3. Drain all remaining fuel from the fuel tank.

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4. Ensure that the fuel level sender travels freely through the entire range of the movement of the lever.

5. Download the IQAN file from the machine onto your "PC" and save the file to a disk.

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6. Open the machine "IQT" file.

7. Go under Channels - Voltage in - Dieselengine as shown above.

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8. Lower the fuel level to the minimum level by draining the remaining fuel into a suitable container. Ensure that the fuel level sender reaches the lowest possible position. This information is located in field (C)

   Note: It is possible that the lever may touch the bottom of the fuel tank in the minimum position.

9. Select the measure field (F4) in order to receive input from the fuel level sender to the IQAN. Read scaled value field (D). If scaled value field (D) reads 0 to 10 proceed to step 10. If field (D) does not read 0 to 10 proceed to step 9.a.

   1. Read value field (C). Erase the number in max field (B) and type in the same number as in value field (C). Select (F2) in order to send the new value in field (B) to the IQAN system. Now scaled value field (D) should show 0±5.

10. Select the measure field (F4) in order to receive input from the fuel level sender to IQAN. Read scaled value field (D) and value field (C) as you fill the tank with fuel. Measure the amount of fuel that you refilled into the tank.

11. Stop filling the tank with fuel when value field (C) or scaled value field (D) stops changing. Now the maximum position of the fuel level sender is reached.

12. Read scaled value field (D). If scaled value field (D) is ±5 of the amount of the refilled fuel then proceed to step 12.a

    1. Read the value in field (C). Erase the numbers in field (A). Type in the same number as in field (C) in field (A). Select (F2) in order to send the new value in field (A) to the IQAN system. Now scaled value field (D) should show ±5, the refilled amount of fuel.

       Note: If the tolerance is not accomplished then change field (A) so that you get the most accurate reading of the refilled volume in the scaled value field (D) .

13. Save the changed IQT file to your disk.

14. Disconnect the IQAN connection between the PC and the machine.