Low Engine Oil Pressure Diagnostics Procedure –1/1 TM2361 (24JUN08) 9010-15-16 450DLC Excavator Operation and Tests 062608 PN=286 Diagnostic Information 3 Cylinder Liner Check Remove and inspect cylinder liners. Are cylinder liners ok? YES: Go to Cracked Cylinder Head or Block. NO: Replace cylinder liners. – – –1/1 4 Cracked Cylinder Head or Block Look for crack on both components. Are either components cracked? YES: Repair or replace components. – – –1/1 Low Engine Oil Pressure 9010 15 16 JC89288,0000055 –19–21APR06–1/1 1 Preliminary Checks 1. Check to see that correct oil is in engine. 2. Check oil filter (plugged). 3. Check level of oil. Was problem found? YES:
Repair or replace parts as necessary and retest. NO: Go to Oil Pressure Switch/Sensor Check. – – –1/1 2 Oil Pressure Switch/Sensor Check Measure engine oil pressure with a mechanical gauge to verify pressure is low. See Engine Oil Pressure Test. (9010-25.) Is oil pressure at desired level? YES: Repair or replace parts as necessary and retest. NO: Go to Oil Cooler Check. – – –1/1 3 Oil Cooler Check If oil temperature is excessive, remove and inspect engine oil cooler. See Oil Cooler Remove and Install. (Group 0500.) Is oil cooler in good condition? YES: Go to Oil Pressure Regulating Valve Check. NO: Repair or replace parts as necessary and retest. – – –1/1