CAP AS-TRACK IDLER 3069443 - Caterpillar

Use this procedure if the following event code is active. Refer to Troubleshooting, "Event Codes" for information about event codes and the default trip point for this code. You must access the monitoring system on Caterpillar Electronic Technician (ET) in order to view the current trip point for this code.
Table 1
Event Code    
Description    Conditions which Activate the Code    System Response    
E233(3) Low Engine Pre-Lube Pressure     The prelube oil pressure is less than the trip point and the delay time has expired.     The shutdown output is activated. Starting of the engine is prevented. The signal driver for the prelube pump remains activated. The code is logged. The engine will not start.    Probable Causes
Low air supply pressure
Low level of lubricant in the lubricator
Restriction of the prelube pump's exhaust
Problem with the supply of engine oil
Electrical problem
Problem with the prelube pump's pressure switch
Problem with the pump
Problem with the regulators for the engine oil temperatureRecommended Actions
Check the Air Supply Pressure
For a prelube pump that operates with pressurized air, make sure that the air supply pressure is adequate. Inspect the system for leaks.Check the Lubricator
For a prelube pump that operates with pressurized air, make sure that the lubricator is adequately filled with the correct lubricant.Check the Exhaust
For a prelube pump that operates with pressurized air, make sure that the exhaust is not restricted.Check the Engine Oil Supply
Check the engine oil level. Add oil until the oil level is between the "ADD" and "FULL" marks on the oil level gauge. Inspect the lubrication system for leaks.If the supply of engine oil is correct, look for leaks in the oil lines for the prelube pump. Make sure that the supply of engine oil is not obstructed. Make repairs, as needed.Check the Power Source for the Prelube Pump
Make sure that the output for the prelube pump is activated. Refer to Troubleshooting, "Prelubrication - Test".Check the Prelube Pump's Pressure Switch
The prelube pump's pressure switch must close before the starting motor relay will be energized. Make sure that the switch operates correctly. Refer to Troubleshooting, "Prelubrication - Test".Inspect the Prelube Pump
The prelube pump may have a mechanical problem. Inspect the prelube pump. For instructions on removal and disassembly, refer to Disassembly and Assembly, SENR5535.Check the Regulators for the Engine Oil Temperature
Make sure that the regulators for the engine oil temperature open according to the correct values. Refer to Specifications, "Engine Oil Temperature Regulators".