BUSHING 1958209 - Caterpillar

Probable Causes
Diagnostic Codes
Event Codes
Selected Engine Rating Parameters
Electrical Connections to the ECM
Electronic Unit Injector Connector
Low Injection Actuation Pressure
Fuel SupplyRecommended Actions
Note: Before you proceed, connect ET in order to check for active diagnostic codes or active event codes. If the problem only occurs under certain conditions such as high engine speed, full load or engine operating temperature, then perform the test under those operating conditions.Selected Engine Rating Parameters
The engine may be shut down due to low pressure levels or other factors. Connect an Electronic Service Tool and check for active shutdowns or diagnostic codes.If a shutdown is active, "injection disabled" will appear in the third box of engine status on any ET status screen.Electrical Connections to the ECM
Check the associated wiring for damage, abrasion, corrosion or incorrect attachment. Check for correct installation of ECM connectors J1/P1 and J2/P2, machine connector J3/P3, and the connectors for the engine speed/timing sensors. Refer to Troubleshooting, "Electrical Connectors - Inspect" for additional information. Check the battery connections at the ECM. Check the power connection for the key switch at the ECM. Perform a pull test on all battery connections. The wires should remain in the connectors during the pull test. Refer to Troubleshooting, " Electrical Connectors-Inspect". If you suspect that the ECM is not receiving the battery supply voltage, refer to Troubleshooting, "Electrical Power Supply Circuit-Test".
The problem may occur when the engine is warmed up. Then as the engine cools, the problem may disappear. The circuit breakers may be exceeding the trip point because of the overheating. Check the circuit breakers on the engine. Reset the circuit breakers.
Aftermarket engine protection devices usually interrupt power to the ECM. Check for correct installation and operation of aftermarket engine protection devices. It may be necessary to bypass aftermarket devices in order to continue testing.Electronic Unit Injector Connector
Check the Unit Injector connectors J300/P300 and associated wiring for damage, abrasion, corrosion or incorrect attachment. Refer to Troubleshooting, "Electrical Connectors-Inspect" for additional information.Low Injection Actuation Pressure
Check the engine oil level. Engine oil is used to activate the high pressure hydraulic pump.
Ensure that the engine oil meets the recommendations of the engine manufacturer. Refer to Operation and Maintenance Manual for further details.
Crank the engine and monitor the Injection Actuation Pressure and the output of the Injection Actuation Pressure Control Valve. The High Pressure Oil system is operating properly if the pressure output is a minimum of 6 MPa (870 psi). If you suspect a problem with the injection actuation pressure, refer to Troubleshooting, "Injection Actuation Pressure System-Test".Fuel Supply
Check for a problem with the fuel supply and verify the fuel pressure. Verify that the fuel pressure sensor is installed. Refer to Testing and Adjusting, "Fuel System" for additional information.