GEAR ASSEM. 9M3013 - Caterpillar

Use the steps that follow to check the operation of the HEUI fuel system. Circle the appropriate answers within the “Results” section of each step. Complete the pages. Provide completed pages with any returned part. Return the parts through the normal channels. Results from the test must be included in the claim for related repairs. Failure to follow the proper sequence of this procedure may result in incorrect results. The standard warranty may not cover repairs that are performed while using this procedure incorrectly.
Illustration 1 g01181491
Left side of engine (typical example)
(1) J500/P500 Connector for the injection actuation pressure control valve
(2) Injection actuation pressure sensor
Table 1
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect the Cat® Electronic Technician (ET) to the data link connector.
B. Turn the keyswitch to the ON position. DO NOT START THE ENGINE.
C. Print the "Lifetime Totals" and the "Configuration" screen.
D. Check for active diagnostic codes or logged diagnostic codes. The diagnostic codes should become active within 30 seconds.
E. Verify that the engine coolant temperature sensor is operating properly. Verify through Cat ET. Refer to Testing and Adjusting, "Test For The Water Temperature Gauge" for the proper procedure.
Document all active diagnostic codes or logged diagnostic codes.
Codes
Results: There are no active codes or logged codes. Proceed to Test Step 2.
Results: Active codes or logged codes are present.
Repair: Troubleshoot the codes as required.
STOP
2. Start the Engine
A. Inspect the engine for oil leaks in the HEUI oil rail. Repair leaks before proceeding. Clearly mark all leaks on returned parts.
Note: Inspect the area near the high-pressure oil rail and the unit injector hydraulic pump. If leakage is found between the transfer pump and the hydraulic pump, refer to Special Instructions, REHS3830 for details. If leakage is found between the hydraulic pump and the front housing, refer to Special Instructions, REHS3830 for details on replacing the seal.
B. Check the engine oil level. If the engine oil level is low, add oil to the engine. Do not overfill the engine.
C. Try to start the engine.
Engine
Results: The engine starts. Proceed to Test Step 10.
Results: The engine does not start. Proceed to Test Step 3.
3. Verify the Operation of the Injection Actuation Pressure Sensor
A. Disconnect the connector for the injection actuation pressure sensor. Check for evidence of moisture in the connector. Refer to Troubleshooting, "Electrical Connectors - Inspect" for troubleshooting details.
B. Try to start the engine.
Injection Actuation Pressure Sensor
Results: The engine does not start. Reconnect the connector for the actuation pressure sensor. Clear all diagnostic codes. Proceed to Test Step 4.
Results: The engine starts.
Repair: The injection actuation pressure sensor may be faulty. Replace the sensor and reconnect the connector. Clear all diagnostic codes. Verify that the repair eliminates the problem.
If the problem still exists, proceed to Test Step 4.
4. Observe the Readings in Cat ET
A. Observe the status for "Engine Speed", "Actual Injection Actuation Pressure" and "Engine Oil Pressure" on Cat ET while the engine is cranking. Record the following data:
Engine Speed
Actual injection actuation pressure
Desired injection actuation pressure
Engine oil pressure
Fuel pressure
Engine coolant temperature
Observed "Injection Actuation