CUTTING EDGE 7J2847 - Caterpillar

Illustration 1 g00881862
Left Brake Pedal (1) Released pedal position (2) Maximum pedal travel (3) Left brake pedal position sensorThe calibration of left brake pedal position sensor (3) is used in order to determine the full range of travel of the deceleration pedal. Brake pressure begins to be generated on the rear axle when the left brake pedal travels past the initial brake pressure point.The left brake pedal position sensor must be calibrated if any of the following conditions have occurred:
New power train software is installed.
The left brake pedal position sensor is installed or adjusted.
The service brake control valve is adjusted.
A new service brake control valve is installed.Machine Preparation for Calibration
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.
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.
Shut off the engine.Note: This calibration procedure can be performed without a running engine.
Turn the key start switch and the disconnect switch to the ON position.
Allow only authorized personnel on the machine. Keep unauthorized personnel off the machine and in clear sight of the operator.Calibration Procedure
Table 1
Required Tools    
Part Number     Description     Quantity    
139-4166 or 7X-1570     Data Link Cable     1    
7X-1425     Cable     1    
4C-6805     Adapter     1    
7X-1700 or 171-4400     Communication Adapter Tool     1    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 Testing and Adjusting, "Using Caterpillar Electronic Technician (ET) to Determine Diagnostic Codes" for the machine that is being serviced.
Open the software program (ET). Select the "Transmission 814F", "Transmission 815F", or "Transmission 816F" menu item.
Select the "Service" menu in order to begin the calibration procedure. Then select "Calibrations". A second menu will be displayed. Select "Decelerator Pedal Sensor Calibration" from the second menu.
The next screen is the initial calibration screen. Once "Decelerator Pedal Sensor 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