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Doosan DE12TIS User Manual

Doosan DE12TIS
158 pages
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950106-029004EN
DE12
DIESEL VEHICLE ENGINE
Operation &
Maintenance Manual
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Doosan DE12TIS Specifications

General IconGeneral
Engine ModelDE12TIS
Number of Cylinders6
Compression Ratio17.0 : 1
Fuel SystemDirect injection
Cooling SystemWater-cooled
Governor TypeElectronic
Displacement11.05 L
Max. Torque147 kg·m (1, 063 lb·ft) @ 1, 400 rpm
AspirationTurbocharged
Lubrication SystemForced lubrication
Starting SystemElectric
Engine Type4-cycle, water-cooled, direct injection

Summary

1. GENERAL INFORMATION

1.1. General Repair Instructions

Provides instructions for performing service operations on the engine.

1.2. Engine Characteristics

Details the OMEGA combustion bowl design and its benefits for efficiency and emissions.

1.3. Engine Specifications

Technical specifications for various DE12 engine models.

1.4. Engine Assembly

Illustrates sectional views and assembly diagrams of engine components.

2. MAJOR MAINTENANCE

2.1. Preventive Maintenance

Outlines routine checks and maintenance tasks for engine longevity.

2.2. Diagnosis and Remedy

Guide to identify and resolve common engine starting and operational failures.

2.3. Engine Inspection

Details inspection procedures, general cycles, and use of original parts.

3. DISASSEMBLY AND REASSEMBLY OF MAJOR COMPONENTS

3.1. Disassembly

Step-by-step instructions for disassembling various engine components.

3.2. Inspection and Measurement

Guides on inspecting and measuring critical engine parts for wear.

3.3. Reassembly

Procedures for reassembling engine components after disassembly.

3.4. Breaking-In

Guidelines for the initial operation and break-in period of a new engine.

4. MAINTENANCE OF MAJOR COMPONENTS

4.1. Cooling System

Covers cooling system operation, specifications, and troubleshooting.

4.2. Lubricating System

Details lubricating system components, specifications, and diagnostics.

4.3. Fuel Injection Pump

Explains the fuel system, injection pump specs, and diagnostics.

4.4. Turbocharger

Provides turbocharger data, operating principles, and troubleshooting.

Appendix

Tightening torque for major parts

Lists torque specifications for critical engine and fuel injection system fasteners.

Maintenance specification table

Presents maintenance specifications and limits for various engine components.

Parts & After Service Center

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