BOLT-LOCKING 5P6241 - Caterpillar

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Use this procedure to replace the Electronic Control Module (ECM) or use this procedure if the diagnostic code in Table 1 is active.
Table 1
Diagnostic Codes Table    
Description     Conditions which Generate this Code     System Response    
254-12 Electronic Control Module Error     The ECM has detected a fatal error.     The engine may be shutdown.
Any normal ECM functions may be affected.
Engine performance may be affected.    Replacement of the ECM can be costly. Replacement can also be a time consuming task. Follow the troubleshooting procedures in this manual in order to be sure that replacing the ECM will correct the problem. Verify that the suspect ECM is the cause of the problem.Note: Ensure that the ECM is receiving power and that the ECM is properly wired to the negative battery circuit before a replacement of the ECM is attempted. Refer to Troubleshooting, "Electrical Power Supply - Test".A test ECM can be used to determine if the ECM is faulty. Install a test ECM in place of the suspect ECM. Flash program the correct flash file into the test ECM. Program the parameters for normal operation. The parameters must match the parameters in the suspect ECM. Refer to the following test steps for details. If the use of a test ECM resolves the problem, reconnect the suspect ECM in order to verify that the problem returns. Replace the ECM only if the test ECM resolves the problem and the problem returns with the suspect ECM.Note: When a new ECM is not available, you may need to remove an ECM from an engine that is not in service. The interlock code for the replacement ECM must match the interlock code for the suspect ECM. Be sure to record the parameters from the replacement ECM on a "Parameters Worksheet" for the engine. Use the "Copy Configuration/ECM Replacement" feature that is found under the "Service" menu on Caterpillar Electronic Technician (ET).
If the flash file part number and the and engine application are not matched, engine damage may result.
Perform the following procedure in order to replace the ECM.
Record the configuration data:
Connect Cat ET to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools".
Print the parameters from the "Configuration" screen on Cat ET. If a printer is unavailable, record all of the parameters on the "Parameter Worksheet". Record any logged diagnostic codes and logged event codes for your records.
Use the "Copy Configuration/ECM Replacement" feature that is found under the "Service" menu on Cat ET. Select "Load from