PIN 2P9423 - Caterpillar

Illustration 3 g01109746
Pressure tap for Clutch 1
Connect the 198-4237 Pressure Sensor to the pressure tap for Clutch 1. See Illustration 3 for the locations of all the pressure taps. Use the 198-4236 Adapter Cable in order to connect the pressure sensor to the 198-4234 Digital Indicator .
Make sure that the transmission direction control switch (9) is in the NEUTRAL position.
Make sure that the parking brake is engaged.
Start the engine.
Warm the transmission oil to approximately 40 °C (104 °F).Note: The transmission oil temperature gauge should be at the center position.
Operate the engine at low idle.Note: If a new clutch solenoid modulating valve was installed, shift the transmission for at least 12 times into a speed or a direction that uses the clutch solenoid modulating valve. Allow sufficient time for the corresponding clutch to be fully pressurized.Note: The software program that will be used for this test procedure is the Caterpillar Electronic Technician (ET). The Caterpillar Electronic Technician is a software program that can be used on an IBM-compatible personal computer.Reference: For more information about the use of Electronic Technician, refer to Troubleshooting, "Using Caterpillar Electronic Technician (ET) to Determine Diagnostic Codes" for the machine that is being serviced.
Connect the laptop computer to the service connector in the cab. The service connector is located on the back wall of the cab to the right of the operator's station.
Illustration 4 g01108832
Typical view
Open the software program (ET). Select the "Transmission 824H", "Transmission 825H", or "Transmission 826H" menu item (as required).
Illustration 5 g01108836
Typical view
Select the "Service" menu in order to begin the calibration procedure. Then select "Calibrations". A second menu will be displayed. Select "Transmission Clutch Engagement Pressure Calibrations" from the second menu.
Illustration 6 g01107112
Once "Transmission Clutch Engagement Pressure Calibrations" has been selected, the screen displays a dialog box in order to select the clutch or the clutches for calibration. Initially, all of the clutches are selected. Individual clutches can be removed from the calibration procedure. Once the clutches for calibration are selected press the "Begin" button.
Illustration 7 g01108868
Typical view
The next screen is the initial calibration screen. The calibration screen displays the incremental instructions for calibration. The top display area displays status parameters that are monitored during the calibration. The middle display area displays information about the status of the calibration. The bottom display area displays incremental instructions for the calibration. The step that currently needs to be carried out is in bold text. All other steps are displayed in gray text.
Press the "Next>" button in order to start the calibration. The "Next>" button is disabled, until the current step has been successfully completed. A check will be placed in the box that is left of the step, after the current step is complete. After the successful completion of a step, press the "Next>" button in order to begin the following step. Continue this process in order to complete the calibration procedure.
Once the calibration for the clutch pressure begins, refer to Table 2 for the individual clutch pressures. The pressure for the clutch should match the pressure in