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WASHER 4415645 - Caterpillar

4415645 WASHER Caterpillar parts WASHER
Alternative (cross code) number:
Caterpillar 4415645 WASHER
Weight: 0.04 pounds 0 kg.

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Probable Causes
Diagnostic codes
Programmable parameters
Electrical connectors
Cold mode
Throttle signal
Unit injectors
Fuel supply
Air inlet and exhaust systemRecommended Actions
Note: If the symptom only occurs under certain operating conditions (high idle, full load, engine operating temperature, etc), test the engine under those conditions. Troubleshooting the symptom under other conditions can give misleading results.Diagnostic Codes
Check for active diagnostic codes on the Caterpillar Electronic Technician (ET). Troubleshoot any active codes before continuing with this procedure.Programmable Parameters
Check the following parameters on Cat ET:
Throttle Position Sensor
Direct Fuel Control ModeDetermine the type of throttle that is used in the application. Program the parameters to match the type of throttle that is used. Refer to Troubleshooting, "Throttle Position Sensor Circuit - Test" for more information.Note: The engine will have poor performance if the parameters are not programmed correctly.Electrical Connectors
Check the connectors for the Electronic Control Module (ECM) and the connectors for the unit injectors for correct installation. Refer to Troubleshooting, "Electrical Connectors - Inspect".Cold Mode
Use Cat ET to verify that the engine has exited cold mode. Cold mode operation may cause the engine to run rough and the engine power may be limited.Throttle Signal
Monitor the throttle signal on Cat ET. Verify that the throttle signal is stable from the low idle position to the high idle position.Unit Injectors
Use Cat ET to determine if there are any active diagnostic codes for the unit injectors.
Perform the injector solenoid test on Cat ET in order to determine if all of the injector solenoids are being energized by the ECM. Refer to Troubleshooting, "Injector Solenoid Circuit - Test" for the proper procedure.
Perform the cylinder cutout test on Cat ET in order to identify any injectors that might be misfiring. Refer to Troubleshooting, "Injector Solenoid Circuit - Test" for the proper procedure. Fuel Supply
Check the fuel lines for the following problems: restrictions, collapsed lines and pinched lines. If problems are found with the fuel lines, repair the lines and/or replace the lines.
Check the fuel tank for foreign objects which may block the fuel supply.
Prime the fuel system if any of the following procedures have been performed:
Replacement of the fuel filters
Service on the low pressure fuel supply circuit
Replacement of unit injectorsNote: A sight glass in the low pressure supply line is helpful in diagnosing air in the fuel.
Cold weather adversely affects the characteristics of the fuel. Refer to the Operation and Maintenance Manual for information on improving the characteristics of the fuel during cold weather operation.
Check the fuel pressure during engine cranking. Check the fuel pressure after the fuel filter.

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