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PLATE PUMP 0878275 - Caterpillar



0878275 PLATE PUMP Caterpillar parts PLATE
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Alternative (cross code) number:
CA0878275
087-8275
0878275
Caterpillar 0878275 PLATE PUMP

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Illustration 3 g03713641
Transmission ECM J1 solenoid valve connections
Illustration 4 g03713666
Transmission ECM J2 solenoid valve connectionsNote: The diagrams above are simplified schematics of the Transmission ECM connections. The schematic is electrically correct. However, not all of the possible harness connectors are shown. Refer to the latest revision of the Electrical Schematic (T4), UENR2467 or Electrical Schematic (LRC), UENR2468 for the complete system schematic.Diagnostic Trouble Code Procedure
Note: Prior to performing this procedure, inspect all of the connectors involved in the circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all of the connections in the circuit are dry, clean, secure, and in good condition. Each pin and socket in the connectors should mate correctly when the connectors are fastened together. Check for exposed wires at the connectors for nicks or abrasion. Perform a wiggle test on the sensor circuit of the machines wiring harness, using Cat® Electronic Technician. The wiggle test can be used to detect open or shorted connections in the machine wiring harness. Reconnect all harness connectors. Make sure that the connectors are fully seated. Observe that the clips for each connector are fastened. If a problem is found with any of the connections: correct the problem and verify that diagnostic code is still active, before performing the following procedures. For sensors powered via the fuse panel, check the condition of the appropriate fuse before beginning the troubleshooting procedure. For more information, refer to Testing and Adjusting, "Electrical Connector - Inspect".
Table 3
Troubleshooting Test Steps    Values    Results    
1. Identify Active FMI Code Associated With Solenoid Circuit    
Code present.     FMI 3 diagnostic code, proceed to Test Step 2.
FMI 5 diagnostic code, proceed to Test Step 3.
FMI 6 diagnostic code, proceed to Test Step 5.    
2. Check The Machine Harness For A Short
A. Turn the key start switch and the disconnect switch OFF.
B. Disconnect the harness connection at solenoid.
C. Disconnect J1 and J2 connectors from ECM.
D. Measure the resistance of solenoid signal contact to all J1 and J2 contacts.    
Each reading is greater than 5K Ω.     OK - All resistance readings are greater than 5K Ω .
Proceed to Test Step 7.
NOT OK - One or more readings are less than 5 Ω.
Repair -A short exists between the signal contact and the circuit with the low resistance. Repair or replace the machine harness.
Note: A resistance that is greater than 5 Ω but less than 5K Ω would indicate a loose connection or a corroded connection in the circuit. A resistance measurement that is greater than 5K Ω would indicate an open in the circuit.
Proceed to Test Step 7.    
Begin Process For FMI 5 Troubleshooting HERE    
3. Check The Solenoid.
A. Turn the key start switch and the disconnect switch OFF.
B. Disconnect the solenoid from the machine harness.
C. Place a jumper wire between contact 1 and contact 2, at the harness connector for the solenoid.
D. Turn the key start switch and the disconnect switch ON. Do not start


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