2003/06/09 New Software Is Now Used {7620} Caterpillar

A new software is available for Track-Type Tractors. The new 232-2596 Flash File is available for the machines that are listed above. The 232-2596 Flash File is effective with machines that are listed in Table 1.

The 232-2596 Flash File offers the following improvements:

• Improvements have been made to the parameter settings for steering modulation. The parameter settings can be changed with a ET 2002B Electronic Technician or newer. This parameter setting varies the turning radius of the machine in relation to the movement of the joystick. The following parameter settings for the steering modulation can be accessed on the configuration screen on the Electronic Technician: "Low" "Previous Default Setting", "Medium" "New Default Setting" and "High". If the parameter setting is set to "Low", the machine will have a small turning radius with minimal movement of the joystick. If the parameter setting is set to "High", the operator will be required to move the joystick further in order to create the same small turning radius.

• Improvements have been made to the parameter settings for steering response. The parameter settings for steering response can be changed with a ET 2002B Electronic Technician or newer. This parameter setting limits the sensitivity of the joystick. The parameter setting is similar to an orifice that is in the pilot control line. The "High" setting acts as a large orifice that allows quick response from the machine with steering input from the operator. The "Low" setting acts as a small orifice that slows the response rate from the machine with steering input from the operator. The machine will operate smoothly if the parameter setting is set on "Low", but the machine will not respond to quick changes in the position of the joystick. The following parameter settings for the steering response can be accessed on the configuration screen on the Electronic Technician: "Low" "Previous Default Setting", "Medium" "New Default Setting" and "High".

• Improvements have been made to the fault detection system for unexpected track movement. An event will become active if the tracks are moving without being commanded by the ECM. An event will be logged if the tracks are moving faster than the input speed that is sent to the ECM. These events are used in order to detect faults that may be present in the pumps and motors. Further troubleshooting will be required in order to determine the root cause of the problem. If an event is detected the machine will stop and the event will be logged. The machine must be restarted in order to deactivate the active event. Refer to Table 2 for a list of events that have been added to the fault detection system.

• Improvements to the calibration procedure for the hydraulic pumps and hydraulic motors have been made in order to detect components that are malfunctioning during the calibration procedure. Refer to Table 3 for a list of possible logged events that have been added to the calibration procedure.

The calibration procedure for the hydraulic pumps and the hydraulic motors can be viewed on a "2003A" Electronic Technician. Newer versions of the Electronic Technician can be used in order to view the calibration procedure. Click on the "Status Tool" and create a new group. Insert the parameters that are listed in Table 4 into the new group. These parameters are not set up in any defined group. Two new groups must be created in order to view all of these parameters.