Engine Overheats JC89288,000004F –19–29APR06–1/1 Engine Overheats Diagnostics Procedure –1/1 TM2361 (24JUN08) 9010-15-12 450DLC Excavator Operation and Tests 062608 PN=282 Diagnostic Information 12 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. See Engine Control Module (ECM) Remove and Install. (Group 9015-20.) Does the engine start? YES: New software repaired ECM. – – –1/1 13 Mechanical Engine Check Check the mechanical parts of the engine, and repair if needed. • Compression pressure See Engine Compression Pressure Test.
(Group 9010-25.) • Valves See Check and Adjust Engine Valve Lash (Clearance). (Group 9010-25.) • Injector Injector Balance Test (Injector Misfire Test). (Group 9010-25.) Are mechanical parts of engine OK? NO: Repair or replace parts as necessary and retest. – – –1/1 9010 15 12 1 Preliminary Checks • Check coolant level. • Check that thermostat is not stuck closed or is not missing. • Check radiator screen for being plugged. • Check radiator and oil cooler cores for dirt or bent fins. • Check for shroud or baffles (foam rubber) missing. • Check that fan blade is installed properly. Was the problem found? YES: Repair or replace parts as necessary and retest. NO: Go to Air filter Check.
– – –1/1