TM2361 (24JUN08) 9010-15-8 450DLC Excavator Operation and Tests 062608 PN=278 Diagnostic Information 9 EGR Control System Check Perform EGR Control System Check. See EGR Control System Check. (Group 9010-25.) Is the EGR valve free to open and close properly? YES: Go to Air Intake System Leakage Test. NO: Replace EGR valve and retest. – – –1/1 10 Air Intake System Leakage Test Perform Air Intake System Leakage Test See Air Intake System Leakage Test. (Group 9010-25.). Is air system ok? YES: Go to Engine Compression Pressure Test. NO: Repair or replace parts as necessary and retest. – – –1/1 9010 15 8 11 Engine Compression Pressure Test Perform Engine Compression Pressure Test.
See Engine Compression Pressure Test. (Group 9010-25.) Was cause of low compression found? YES: Repair or replace parts as necessary and retest. NO: Go to Check and Adjust Engine Valve Lash (Clearance). – – –1/1 12 Check and Adjust Engine Valve Lash (Clearance) Check valve lash. See Check and Adjust Engine Valve Lash (Clearance). (Group 9010-25) Was valve clearance on all valves within specification? YES: Go to Engine Control Module (ECM) Check. NO: Adjust valve clearance and retest. – – –1/1 13 Engine Control Module (ECM) Check 1. Check the version of ECM software. 2. Upgrade the software version or replace ECM if necessary. NOTE:
EGR valve position learning is required after replacing or rewriting the ECM. Injector codes need to be input into ECM, when replacing. See Engine Control Module (ECM) Remove and Install. (Group 9015-20.) Does the engine start? YES: New software repaired ECM. – – –1/1