WHEEL GP 8D1720 - Caterpillar

Procedure for Transmission Clutch Fill Calibration
Table 1
Required Tools    
Part Number     Description     Quantity    
171-4400     Communication Adapter Gp     1    
257-8717     Cable Adapter     1    
Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.Prevent possible injury by performing the procedure that follows before working on the machine.
Do not connect or disconnect hose fittings to or from the quick disconnect nipples when there is pressure in the system. This will prevent damage to the seals that are in the fitting.
Park the machine on a smooth, level surface.
Shift the transmission direction control switch to the NEUTRAL position.
Lower the work tool to the ground.
Engage the parking brake.
Place blocks in front of the wheels and behind the wheels.
Install the steering frame lock.Note: Allow only authorized personnel on the machine. Keep unauthorized personnel off the machine and in clear sight of the operator.
Start the engine.
Warm the transmission oil to at least 70 °C (158 °F).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.
Illustration 1 g01241333
Service connector for the Caterpillar Electronic Technician
Connect the laptop computer to the service connector in the cab.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.ReferenceFor more information about the use of Electronic Technician, refer to Troubleshooting, "Using Caterpillar Electronic Technician to Determine Diagnostic Codes".
Illustration 2 g01183350
Open the software program (ET). Select the "Transmission" menu item.
Increase engine speed to high idle.
Illustration 3 g01183871
Select the "Service" menu in order to begin the calibration procedure. Then select "Calibrations". A second menu will be displayed. Select "Transmission Fill Calibration" from the second menu.
Illustration 4 g01185078
The next screen is the initial calibration screen. Once "Transmission Fill Calibration" has been selected, the 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.
The calibration procedure continues until the ECM determines that one of the steps is not met. The middle display area