SEAT GP-SUSPENSION 5044291 - Caterpillar

Expected Result:The pressure that is measured with the pressure gauge for each step and the pressure that is displayed on Cat ET for each step are within 1379 kPa (200 psi).Results:
OK - The pressure difference is within specifications. The injection actuation pressure sensor is operating properly. Proceed to Test Step 12.
Not OK - The pressure difference is not within specifications.Repair: The injection actuation pressure sensor may be faulty. Replace the sensor and repeat this test step.If the problem still exists, reinstall the original sensor and proceed to Test Step 12.Test Step 12. Perform the "Injection Actuation Pressure Test" at both Low Idle and at High IdleStart the engine. Perform the "Injection Actuation Pressure Test" at low idle and at high idle.Record the results in Table 2.
Table 2
Low Idle
Step Actual injection pressure from Cat ET "Injection Pressure Percentage Output" from Cat ET
1
2
3
4
High Idle
Step Actual injection pressure from Cat ET "Injection Pressure Percentage Output" from Cat ET
1
2
3
4 Expected Result:The "Injection Actuation Pressure Output" is between 0 percent and 65 percent.Results:
OK - The "Injection Actuation Pressure Output" is within specifications.Repair: Call technical support for assistance.STOP
Not OK - The "Injection Actuation Pressure Output" is not within specifications. Proceed to Test Step 13.Test Step 13. Install a New IAPCV and Retest the SystemInstall a new IAPCV and perform the "Injection Actuation Pressure Test" at low idle and at high idle.Record the results in Table 3.
Table 3
Low Idle
Step Actual injection pressure from Cat ET "Injection Pressure Percentage Output" from Cat ET
1
2
3
4
High Idle
Step Actual injection pressure from Cat ET "Injection Pressure Percentage Output" from Cat ET
1
2
3
4 Expected Result:The "Injection Actuation Pressure Output" is between 0 percent and 65 percent.Results:
OK - The "Injection Actuation Pressure Output" is within specifications.Repair: The replacement of the IAPCV corrected the problem. Run the engine under normal operating conditions in order to verify that the original problem has been resolved.STOP
Not OK - The "Injection Actuation Pressure Output" is not within specifications. Reinstall the original IAPCV. Proceed to Test Step 14.Test Step 14. Remove the IAPCV and Check the Oil Pressure
Remove the IAPCV. Refer to Disassembly and Assembly, "Injection Actuation Pressure Control Valve - Remove and Install".
Replace the IAPCV with a 219-2368 Plug (DIAGNOSTIC) and 9X-1484 Seal Kit.
Locate the high pressure oil line that supplies high pressure oil to the cylinder head. Remove the oil line and install the 8T-0852 Pressure Gauge to the line or to the high pressure port at the pump. Crank the engine and record the oil pressure that is indicated on the gauge. Note: The pressure readings may vary between gauges.________ Observed pressure reading________ Observed RPMExpected Result:The oil pressure is above 27.5 MPa (4000 psi).Results:
OK - The oil pressure is above 27.5 MPa (4000 psi). The high pressure oil pump is operating correctly. Proceed to Test Step 16.
Not OK - The oil pressure is below 27.5 MPa (4000 psi).Repair: The high pressure oil pump may be faulty. Remove the pressure gauge from the engine.Proceed to Test Step 15.Test Step 15.