GEAR AS-IDLER 7E8431 - Caterpillar

To find the cause of a low oil pressure shutdown, perform this procedure.
Check For A Diagnostic Code.
Check for a CID 100 diagnostic code that is active. Check for a CID 269 diagnostic code that is active. See System Operation, "Diagnostic Codes".Expected Result: The CID 100 or the CID 269 should not be active.Results:
OK: Proceed to Step 2.
NOT OK: Correct the active CID 100 or CID 269 prior to proceeding with this procedure. See System Operation, "Diagnostic Codes". STOP.
Check obvious causes.
Check for low oil pressure.
Check the oil level.
Check for oil leaks.
Check for other obvious causes of low oil pressure.Expected Result: No obvious cause should exist.Results:
OK: Proceed to Step 3.
NOT OK: An obvious cause exists. Correct the fault. Refer to the Engine Service Manual. STOP.
Check Setpoints.This step checks the setpoints P012 (oil step speed), P013 (low oil pressure at rated speed) and P014 (low oil pressure at idle speed).
Make a note of setpoints P012, P013 and P014. See System Operation, "Engine/Generator Setpoint Viewing OP2-0".
Compare the setpoints with the setpoints of the particular generator set.Expected Result: The setpoint's value and the specified setpoint value should agree.Results:
OK: Proceed to Step 4.
NOT OK: The setpoints do not agree. Reprogram setpoints P012, P013 and P014. See System Operation, "Engine/Generator Programming OP5-0". STOP.
Check The Low Oil Pressure Function.
Turn the engine control switch (ECS) to OFF/RESET. Turn the ECS to START.
Allow oil pressure to stabilize.
When the engine is at idle speed, compare the actual pressure that is shown on the lower display with setpoint P014. This setpoint is noted in Step 3. The actual pressure that is shown should be greater than setpoint P014.
Operate the engine at rated speed. Compare the actual pressure that is shown on the lower display with setpoint P013. P013 is noted in Step 3. The actual pressure that is shown should be greater than setpoint P013.Expected Results: The actual pressure at idle speed and at rated speed should be greater than the respective setpoint value. These actual pressures should not cause a low oil pressure shutdown.Results:
OK: Both actual pressures are greater than the corresponding setpoint value and the low oil pressure indicator does not FLASH. The problem may be intermittent. Check the harness and all electrical connections of the oil pressure circuit. See Testing And Adjusting, "Electrical Connector - Inspect". STOP.
OK: Both actual pressures are greater than the corresponding setpoint value and the low oil pressure indicator remains FLASHING. The GSC+ is faulty. Replace the GSC+. See Testing And Adjusting, "EMCP Electronic Control (Generator Set) - Replace". STOP.
NOT OK: Actual pressure that is shown is less than the setpoint for the rated speed or for the idle speed. The pressures are correct for a low oil pressure shutdown. The engine should be shutdown and the low oil pressure indicator should FLASH. The GSC+ is operating properly. Refer to the Engine Service Manual in order to find the cause of low oil pressure. STOP.Note: Check the accuracy of the pressure that is shown on the GSC+. Install an engine oil pressure gauge