ENGINE SERVICE MANUAL 1ForewordNavistar, Inc. is committed to continuous researchand development to improve products and introducetechnological advances. Procedures, specifications,and parts defined in published technical serviceliterature may be altered.This Engine Service Manual provides a generalsequence of procedures for out-of-chassis engineoverhaul (removal, inspection, and installation). Forin-chassis service of parts and assemblies, thesequence may vary.NOTE: Photo illustrations identify specific parts orassemblies that support text and procedures; otherareas in a photo illustration may not be exact.See vehicle manuals and Technical ServiceInformation (TSI) bulletins for additional information.Technical Service Literature1171809R5 DT 466, DT 570 and HT570 Engine Operation andMaintenance ManualEGES-265–2 DT 466, DT 570 and HT 570Engine Service ManualEGES-270 DT 466, DT 570 and HT 570Engine Diagnostic ManualEGED-285 DT 466, DT 570 and HT 570Electronic Control SystemsDiagnostic Form (Pad of 50)EGED-290 DT 466, DT 570 and HT 570Diagnostics Form (Pad of 50)Navistar, Inc. is committed to continuous researchand development to improve products and introducetechnological advances. Procedures, specifications,and parts defined in published technical serviceliterature may be altered.This Engine Service Manual provides a generalsequence of procedures for out-of-chassis engineoverhaul (removal, inspection, and installation). Forin-chassis service of parts and assemblies, thesequence may vary.NOTE: Photo illustrations identify specific parts orassemblies that support text and procedures; otherareas in a photo illustration may not be exact.See vehicle manuals and Technical ServiceInformation (TSI) bulletins for additional information.EGES-265-2Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.Follow all warnings, cautions, and notes.© 2009 Navistar, Inc.