SEAL 8B8255 - Caterpillar

System configuration parameters are configured to specify the emissions levels, the power rating, and the specific application. Default values for the parameters are programmed at the factory. Some parameters may be changed in order to equip the engine for a specific application. The system configuration parameters must be reprogrammed if the Electronic Control Module (ECM) is replaced without using the "Copy Configuration" tool that is in Caterpillar Electronic Technician (ET). If you update the flash file for the ECM, the configuration parameters are retained in the resident memory of the ECM. Certain configuration parameters are stamped into the engine information plate.The configuration parameters in the following parameter groups may be changed using the Messenger display panel:
Timing Control
Air/Fuel Ratio Control (AFRC)
Speed Control
Start/Stop ControlSome parameters may be protected by security passwords. Factory passwords will require Cat ET in order to change these parameters. Refer to Testing and Adjusting, "Factory Passwords" for details.Note: Factory passwords are only available to service technicians from an authorized Caterpillar Dealership. Customers of Caterpillar do not have access to the Caterpillar Factory Password System (FPS). If the parameters that are protected with factory passwords are changed without authorization from Caterpillar, the repair may not be covered under the Caterpillar warranty.ECM Identification Parameters
Equipment ID
The customer can assign an Equipment ID to identify the engine application.Engine Serial Number
The engine serial number is programmed into the ECM at the factory. The number is stamped on the engine information plate. If the ECM is replaced, the engine serial number must be programmed into the new ECM.ECM Serial Number
The ECM serial number is programmed into the ECM at the factory.Software Group Part Number
Part number of the flash file that is currently installed in the ECM.Software Group Release Date
Release date of the flash file that is currently installed in the ECM.Software Group Description
Description of the application for the flash file that is currently installed in the ECM.Timing Control
The timing parameters allow the customer to program the ignition timing for the engine to meet the needs for specific applications and specific installations.Note: The actual ignition timing at a given instance may vary from the desired timing value. This variance is due to variations in the engine speed, engine load, or detonation.First Desired Timing
The First Desired Timing is determined with the methane number of the primary fuel that is used. Use the Engine Performance Sheet, "Fuel Usage Guide".
Note: Determine the desired timing by using the Caterpillar Software, LEKQ6378, "Methane Number Program" with the results that are from the fuel analysis. Use of only the data from the gas analysis can result in incorrect settings.Desired Engine Timing Offset
The feature offsets the ignition timing in order to compensate for timing errors. These errors are due to resistances in the electrical circuitry and the stackup of mechanical tolerances.This parameter provides a manual method that will allow additional timing adjustment to be performed after calibration of the speed/timing sensor. Perform a negative adjustment to