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SUPPORT AS 5089114 - Caterpillar



5089114 SUPPORT AS Caterpillar parts SUPPORT
Rating:
26
Alternative (cross code) number:
CA5089114
508-9114
5089114
Caterpillar 5089114 SUPPORT AS

Buy SUPPORT AS 5089114 Caterpillar genuine, new aftermarket tractor parts with delivery

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Probable Causes
Diagnostic codes and event codes
Fuel priming pump
Fuel transfer pump
Excessive loadDiagnostic Codes and Event Codes
Connect Caterpillar Electronic Technician (ET) to the service tool connector. Check for active diagnostic codes and event codes.Look for diagnostic codes that are active or logged. Check for codes that are related to the low-pressure fuel system. Use the appropriate circuit test to troubleshoot any active codes before continuing.Also, look for event codes that are active or logged. check for codes that are related to the low-pressure fuel system. If there is evidence of a problem with the fuel system, repair the low-pressure fuel system before continuing.Note: Diagnostic codes that are logged repeatedly could be a sign of intermittent electrical problem. Event codes that are logged repeatedly may be evidence of an impending problem with the engine.Fuel Priming Pump
The electric fuel priming pump is used to prime the low-pressure fuel system prior to engine starting. The low-pressure fuel system must be pressurized to approximately 250 kPa (36 psi) (gauge) in order to open the check valves that are for the high-pressure pump. The booster pump that is customer supplied may Use Cat ET to monitor the "Fuel Pressure (absolute)" parameter during engine cranking. Ensure that the electric fuel priming pump is achieving the correct pressure. Refer to Systems Operation/Testing and Adjusting for additional information that is related to testing the low-pressure fuel system.If the electric fuel priming pump is not generating the correct pressure during engine cranking, inspect the check valve for wear.For an earlier priming pump with internal check valves, replace the valves and the springs.For later priming pump with an external check valve at the fuel supply connection, replace the check valve.If replacement of the check valve resolves the problem, return the unit to service. Otherwise, replace the fuel priming pump.Fuel Transfer Pump
The fuel transfer pump may not be pumping an adequate volume of fuel in the low-pressure fuel system. If the correct pressure is not maintained during start-up the engine may start, but the engine will not continue running.Use Cat ET to monitor the "Fuel Pressure (absolute)" status parameter during engine starting. Ensure that the fuel pressure is at least 250 kPa (36 psi) (gauge) during engine cranking. Also ensure that the fuel pressure remains above 250 kPa (36 psi) (gauge) after the engine has started.If the other components in the fuel system are OK and the fuel pressure decreases after start-up, replace the fuel transfer pump.Excessive Load
Make sure that the load is not excessive. Reduce the load. If necessary, disengage the driven equipment and test the engine.

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