2001/04/23 Caterpillar

Forwarders:

554 (S/N: 1AM1-UP)

574 (S/N: 1FM1-UP)

Service Magazine SEPD0575, 23 April 2001, "A New Flash File Is Used on the Electronic Control Module of Forwarders". Part of this information is incorrect. Replace the existing article with the following information.

Description of Change: A new flash file is now used on the electronic control module of forwarders. The new flash file provides improved smoothness when you shift the gearbox. The new flash file also improves the power train performance in conditions with a high rimpull.

Adaptable To: The new flash file is effective with 554 (S/N: 1AM223; 1AM227; 1AM231-UP) and 574 (S/N: 1FM256; 1FM258-UP) Forwarders. The new flash file is adaptable to first production of the listed machines.

Table 1

Tool List
Quantity	Media Number	Description
1	NETG5025	IQANtalk Standard
Or
1	NETG5026	IQANtalk Professional

Installation Procedure

1. Refer to Service Information System (SIS) for the proper flash file for your machine. The flash files are listed below.
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   Table 2

   Software for the 554 Forwarder
   Language	Part Number
   English - Swedish	221-2181
   English - German	221-2182
   English - Finnish	221-2183
   English - Portuguese	221-2184
   English - Norwegian	221-2185
   English - French	221-2186
   English - Swiss	221-2187

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   Table 3

   Software for the 574 Forwarder
   Language	Part Number
   English - Swedish	221-2174
   English - German	221-2175
   English - Finnish	221-2176
   English - Portuguese	221-2177
   English - Norwegian	221-2178
   English - French	221-2179
   English - Swiss	221-2180

2. Download the ".IQA" file to your machine.

   1. Go to the SIS Web home page.
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   Illustration 1	g00890844

   2. Select "Flash Software Files" (1) .
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   Illustration 2	g00890846

   3. Type ".iqa" into the "Flash Filename" window (3). Select "Search" (4). This will list all of the ".iqa" files.

   4. Place the cursor over the appropriate file number.

   5. Press and hold down the right mouse button. A menu will appear. Move the cursor to the "Save Link As" selection (2). Release the right mouse button.

   6. The "Save as" menu will appear. Save the file onto your PC.

3. For the 554 Forwarder with a hydraulic bogie lift, turn the functions that are given in Table 4 to the ON position.
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   Table 4

   Function	Location
   Bogie Left	MG
   Bogie Right	MG
   JS Bogie L	XS
   JS Bogie R	XS
   Sw Float Left	XS
   Sw Float Right	XS

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Illustration 3	g00792694

4. If your machine is equipped with the hydraulic bogie lift, open the parameter for the joystick that controls the right bogie. Change the "Max" calibration value to 1023. Send the change to the controller.

5. Repeat Step 4 for the joystick that controls the left bogie.

Calibration of the Governor

6. Refer to Operation and Maintenance Manual, SEBU7197, "554 Forwarder and 574 Forwarder", "Engine Governor Control - Calibrate". Perform the governor calibration that was referenced.

Calibration of the Transmission

Note: The following calibration procedure has changed from the material that was written in the service manual. Be sure to follow the procedure carefully in order to properly set up your machine. The procedure must be performed on a smooth, level surface with no load on the machine.

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Illustration 4	g00792699

7. Open the "Hydrostat" parameter in the controller with the IQANtalk software.

8. Change the "Trim Transmission" parameter from "0" to "1". Press "F2" in order to send the new setting to the machine.

9. Start the engine.

10. Press the operating mode switch in order to activate the boom and engine controls.

11. Select the "Forward" direction. Select "1st" gear.

12. On the machines IQAN display, enter the menu for "Maintenance". From the "Maintenance" menu, enter the "Transmission" menu.

13. Slowly depress the accelerator pedal until the machine just begins to move. Read the output current when the machine just begins to move.

14. Enter the current level that was found in Step 13 into the parameter "Min Curr Fwd".

15. Repeat Step 11 through Step 14 after selecting the "Reverse" direction.

16. Select the "Forward" direction. Select "1st" gear.

17. On the machines IQAN display, enter the menu for "Maintenance". From the "Maintenance" menu, enter the "Gearbox" menu.

18. Slowly, depress the accelerator pedal all the way to the floor. Read the "Pwr Train Mtr" rpm when the pedal is fully depressed.

19. The speed of the power train should be between 3400 rpm and 3500 rpm when the pedal is fully depressed. Adjust the maximum current in order to achieve a speed of 3400 rpm to 3500 rpm.

20. Repeat the procedure after selecting the "Reverse" direction.

21. Change the "Trim Transmission" parameter from "1" to "0". Press "F2" in order to send the new setting to the machine.

22. Test the machine. Ensure that all of the switches and joysticks operate correctly.