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Navistar INTERNATIONAL DT 466 User Manual

Navistar INTERNATIONAL DT 466
658 pages
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© 2008 Navistar, Inc.
Printed in the United States of America
DIAGNOSTIC/TROUBLESHOOTING MANUAL
International
®
DT 466, DT 570, and HT 570
DIESEL ENGINE
EGES-270-1

Table of Contents

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Navistar INTERNATIONAL DT 466 Specifications

General IconGeneral
AspirationTurbocharged
Fuel SystemDirect injection
Governed Speed2600 RPM
Displacement7.6 liters
HorsepowerUp to 300 hp
TorqueUp to 860 lb-ft
Coolant Capacity28 quarts
Cooling SystemLiquid Cooled
Bore x Stroke4.59 x 4.68 in (116.6 x 118.9 mm)

Summary

Foreword

Service Diagnosis

Prerequisites for Effective Diagnosis

Lists essential requirements for accurate engine diagnosis, including equipment and knowledge.

Technical Service Literature required for Effective Diagnosis

Lists necessary publications for effective engine diagnosis, such as service and diagnostic manuals.

Safety Information

Safety Terminology

Defines terms like Warning, Caution, and Note used to emphasize safety instructions.

Safety Instructions

Provides essential safety guidelines for work area, equipment, vehicle, and engine operations.

1 ENGINE SYSTEMS

Engine Identification

Details how to identify engine serial numbers and locate emission labels for DT 466, DT 570, and HT 570 engines.

Air Management System

Explains the components and airflow of the air management system, including turbocharger and EGR.

Fuel Management System

Covers components of the fuel management system, including ICP and fuel supply systems.

Fuel Supply System

Describes fuel system components and fuel flow, including filter assembly and fuel rail.

Engine Lubrication System

Details lubrication system components and oil flow, including oil pump, cooler, and galleries.

Cooling System

Explains cooling system components and coolant flow, including water pump, thermostat, and EGR cooler.

Electronic Control System

Describes ECM components, operation, function, and control of engine systems like VGT and EGR.

Diamond Logic® Engine Brake

Explains the features and operation of the Diamond Logic® engine brake system.

2 ENGINE AND VEHICLE FEATURES

Standard Features

Lists standard engine features like electronic governor control, ATA Datalink, service diagnostics, and inlet air heater.

Optional Features

Lists optional features such as cruise control, engine fuel pressure monitor, traction control, and engine brake.

3 DIAGNOSTIC SOFTWARE OPERATION

Diagnostic Trouble Code Detection

Explains how the ECM detects faults and generates diagnostic trouble codes (DTCs).

Diagnostic Tests

Details various diagnostic tests like KOEO, KOER, injector disable, and relative compression tests.

4 ENGINE SYMPTOMS DIAGNOSTICS

Problems and Conditions

Introduces diagnostic test procedures to systematically find and fix engine problems.

Combustion Leaks to Coolant

Describes how to identify and diagnose combustion leaks into the cooling system.

Aerated Fuel

Explains symptoms, causes, and inspection procedures for aerated fuel in the fuel system.

Fuel in Lube Oil

Details how to diagnose fuel contamination in the engine oil and potential causes.

Low Oil Pressure

Covers symptoms and causes of low engine oil pressure and inspection procedures.

Smoke

Discusses black and white smoke conditions, their causes, and diagnostic procedures.

5 HARD START AND NO START DIAGNOSTICS

Description

Explains the purpose of the diagnostic form and troubleshooting approach for hard or no start conditions.

Test Procedures

Outlines step-by-step procedures for diagnosing hard start and no start conditions.

1. Initial Ignition Switch ON (Do not start)

Checks for initial system power-up, WAIT TO START lamp, water in fuel lamp, and pre-cycle noises.

3. Diagnostic Trouble Codes

Details how to access and interpret Diagnostic Trouble Codes (DTCs) using EST or flashing engine lamps.

4. KOEO Standard Test

Explains the Key-On Engine-Off Standard Test to determine electrical malfunctions via ECM self-test and Output Circuit Check.

5. KOEO Injector Test

Describes how to electronically test fuel injectors by energizing them in a programmed sequence.

13. Fuel Pressure and Aerated Fuel

Covers procedures to check fuel pressure and identify aerated fuel using a gauge or spare fuel line.

14. Low ICP System Pressure

Provides steps to determine the cause of low Injection Control Pressure that prevents engine starting.

15. Inlet Air Heater System

Details testing the Inlet Air Heater assembly for correct operation, including amperage draw and voltage checks.

6 PERFORMANCE DIAGNOSTICS

Description

Explains how diagnostic forms help technicians systematically troubleshoot performance issues.

Test Procedures

Outlines various tests to diagnose engine performance issues, covering systems like fuel, air, and electronics.

1. Diagnostic Trouble Codes

Explains how to identify and record DTCs related to engine performance problems.

8. Exhaust Restriction

Details how to check for restrictions in the exhaust system that can cause engine performance issues.

10. Injection Control Pressure

Covers procedures to verify if the ICP system is providing adequate hydraulic pressure to the injectors.

11. Injector Disable Test

Describes how to disable injectors one by one to identify the cause of rough engine idle.

12. Relative Compression

Explains how to determine cylinder compression by measuring crankshaft speed differences.

13. Air Management

Details tests to verify the correct operation of intake, exhaust, VGT, and EGR systems.

14. VGT Test

Provides a manual test to check EBP and MAP changes based on VGT control duty cycles.

17. Test Drive (Full load, rated speed)

Outlines monitoring key engine parameters like boost, fuel pressure, and ICP during a full load test drive.

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS

Sensor and Actuator Locations

Identifies the physical locations of various sensors and actuators mounted on the engine and vehicle.

Diagnostic Procedures for Sensors and Actuators

Provides general procedures for diagnosing sensors and actuators, including pin grip inspection.

Circuit Diagnostics

Offers detailed circuit diagnostics for various electronic control systems, including function diagrams and pin-point tests.

AMS (Air Management System)

Details the circuit operation and fault detection for the Air Management System, including VGT and EGR.

APS/IVS (Accelerator Position Sensor and Idle Validation Switch)

Explains the circuit operation, fault detection, and DTCs related to the APS/IVS sensor.

ICP Sensor (Injection Control Pressure)

Details the function, circuit operation, fault detection, and DTCs for the ICP sensor.

ECM / IDM Communications

Explains the communication between ECM, IDM, and EGR drive module via CAN 2 datalink.

EWPS (Engine Warning and Protection System)

Explains the EWPS features, operational diagnostics, and DTCs for engine protection.

IAH System (Inlet Air Heater)

Describes the function, circuit operation, fault detection, and DTCs for the IAH system.

VGT Actuator (Variable Geometry Turbocharger)

Details the function, circuit operation, and diagnostics for the VGT actuator.

8 DIAGNOSTIC TOOLS AND ACCESSORIES

Tools and Accessories

Lists essential tools and accessories for diagnostics, including EST, interface kits, software, and meters.

EZ-Tech® Electronic Service Tool (EST)

Describes the EST used for diagnosing and troubleshooting engine and vehicle problems.

EZ-Tech® Interface Kit

Details the interface cables used to connect the EST to the ECM.

MasterDiagnostics® Software

Explains the software used for checking system performance and diagnosing problems.

Digital Multimeter (Fluke 88)

Describes the use of the Fluke 88 DMM for troubleshooting electrical components, sensors, and wiring.

Breakout Harness Kit

Lists the various breakout harnesses included in the kit for testing sensor and actuator circuits.

Fuel Pressure Gauge

Describes the fuel pressure gauge used for checking fuel pressure at the fuel rail.

Electronic Circuit Testing

Covers fundamental electrical theory, Ohm's Law, and proper use of multimeters for testing circuits.

Electrical Theory

Explains basic electrical concepts like voltage, current, and resistance.

Ohm’s Law

Describes Ohm's Law and its formulas for calculating electrical circuit parameters.

Using the Digital Multimeter

Provides instructions on using a digital multimeter for testing electronic circuits, including specific test meters.

9 ABBREVIATIONS AND ACRONYMS

Abbreviations and Acronyms

Provides an alphabetical list of common abbreviations and acronyms used throughout the manual for quick reference.

10 TERMINOLOGY

Terminology

Defines key technical terms and concepts related to engine operation and diagnostics.

Accelerator Position Sensor (APS)

A potentiometer sensor indicating accelerator pedal position.

Air Management System (AMS)

Controls and directs air for engine performance and emissions.

Electronic Control Module (ECM)

Microprocessor that monitors and controls engine performance, emissions, and vehicle systems.

Injection Control Pressure (ICP)

High lube oil pressure used to actuate fuel injectors and engine brake.

Variable Geometry Turbocharger (VGT)

Turbocharger with actuated vanes to control boost pressure and emissions.

11 APPENDIX A: DT 466 PERFORMANCE SPECIFICATIONS 2004 MODEL YEAR

DT 466 (Standard and High Torque - all ratings)

Lists performance specifications for DT 466 engines, covering temperature, fuel, and lubrication.

Temperature, Fuel, and Lubrication

Provides operating temperature ranges, fuel grade recommendations, and oil viscosity for DT 466 engines.

12 APPENDIX B: DT 570 AND HT 570 PERFORMANCE SPECIFICATIONS 2004 MODEL YEAR

DT 570 (Standard Torque)

Lists performance specifications for DT 570 engines with standard torque ratings.

HT 570 (High Torque)

Lists performance specifications for HT 570 engines with high torque ratings.

13 APPENDIX C: DIAGNOSTIC TROUBLE CODE INDEX

Diagnostic Trouble Code Index

An index of all diagnostic trouble codes (DTCs) with PID, SID, FMI, circuit, and condition description.

14 APPENDIX D: TECHNICAL SERVICE INFORMATION (TSI)

Description

Explains that TSI letters provide product enhancements and field service information for technicians.

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