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PULLER AS-PUSH 8B7548 - Caterpillar

8B7548 PULLER AS-PUSH Caterpillar parts PULLER
Alternative (cross code) number:
Caterpillar 8B7548 PULLER AS-PUSH
Weight: 21 pounds 9 kg.

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Illustration 1 g02028076
Schematic of the "Hydraulic Pump 1 Outlet Pressure" sensor
This diagnostic code is associated with the "Hydraulic Pump 1 Outlet Pressure" sensor. This diagnostic code is recorded when the Machine ECM reads the sensor signal voltage and the voltage is too low. The possible causes of this failure are listed below:
The sensor has failed.
The signal circuit in the machine harness is shorted to ground.
The Machine ECM has failed (unlikely). Test Step 1. CHECK THE SENSOR.
Disconnect the machine harness from the sensor. Expected Result:The diagnostic code changes from CID 2265 FMI 04 to CID 2265 FMI 03. Results:
OK - The diagnostic code changed to CID 2265 FMI 03. This change indicates that the failure is no longer present. The sensor has failed.Repair: Replace the sensor.STOP
NOT OK - The diagnostic code CID 2265 FMI 04 remained active. This change indicates that the failure remains present. The sensor is not the cause of the failure. Proceed to Test Step 2.Test Step 2. CHECK THE HARNESS.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the J1 machine harness connector from the Machine ECM.
At the harness connector for the sensor, measure the resistance between the signal contact C (wire K904-GN(Green)) and frame ground. Expected Result:The resistance is greater than 5000 ohms. Results:
OK - The resistance is greater than 5000 ohms. The harness circuit resistance is correct. The Machine ECM may have failed. Repair: A failure of the Machine ECM is unlikely. Exit this procedure and perform this diagnostic code procedure again. If the failure is not found, replace the Machine ECM. See the Testing and Adjusting , "Electronic Control Module (ECM) - Replace " section of this manual. STOP
NOT OK - The resistance is less than 5000 ohms. The machine harness has failed. There is a short between frame ground and the signal circuit in the machine harness. Repair: Repair the machine harness or replace the machine harness. STOP

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