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Daewoo DE12TIA - User Manual

Daewoo DE12TIA
188 pages
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FOREWORD
This manual is designed to serve as a reference for DAEWOO Heavy Industries & Machinery Ltd's
(here after DAEWOO’s) customers and distributors who wish to gain basic product knowledge on
DAEWOO's DE12T, DE12TI, DE12TIA and DE12TIS diesel engines.
These economical and high-performance diesel engines (6 cylinders, 4 strokes, in-line type) have been
so designed and manufactured to be used for the industrial application. They meet all the requirements
such as low noise, fuel economy, high engine speed and durability.
To maintain the engine in optimum condition and retain maximum performance for a long time,
CORRECT OPERATION and PROPER MAINTENANCE are essential.
In this manual, the following symbols are used to indicate the type of service operations to be performed.
Removal Adjustment
Installation Cleaning
Disassembly Pay close attention-Important
Reassembly Tighten to specified torque
Align the marks Use special tools of manufacturer's
Directional Indication Lubricate with oil
Inspection Lubricate with grease
Measurement
During engine maintenance, please observe following instructions to prevent environmental damage;
Take old oil to an old oil disposal point only.
Ensure without fail that oil will not get into the sea or rivers and canals or the ground.
Treat undiluted anti-corrosion agents, antifreeze agents, filter element and cartridges as special waste.
The regulations of the relevant local authorities are to be observed for the disposal of spent coolants
and special waste.
If you have any question or recommendation in connection with this manual, please do not hesitate to
contact our head office, dealers or authorized service shops near by your location for any services.
For the last, the content of this maintenance instruction may be changed without notice for some
quality improvement. Thank you.
DAEWOO Heavy Industries & Machinery LTD.
Feb. 2005

Table of Contents

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Summary

SAFETY REGULATIONS & ENGINE SPECIFICATIONS

General Notes

Provides essential information for safe operation and maintenance of engines.

Regulations Designed to Prevent Accidents

Details safety regulations for commissioning, starting, operation, and maintenance.

Regulations Designed to Prevent Damage to Engine and Premature Wear

Guidelines to prevent engine damage and premature wear during operation.

Notes on Safety in Handling Used Engine Oil

Precautions for safe handling and disposal of used engine oil.

General Repair Instructions

Provides instructions for performing service and repair operations safely and correctly.

Engine Specification

Details technical specifications for different engine models.

Engine power

Lists performance data including power, torque, and speeds for various engine models.

Performance curve

Illustrates performance curves (power, torque, fuel consumption) for specific engine models.

TECHNICAL INFORMATION

Engine Type

Describes the engine type, combustion bowl, cylinder block, and crankshaft.

Engine Oil

Provides information on checking, changing, and recommended engine oils.

Fuel System

Describes the fuel delivery path from tank to injection nozzles.

Fuel filter

Explains the functions and replacement interval of the fuel filter.

Valve Clearance Adjust Procedure

Step-by-step guide for adjusting valve clearance.

Cylinder Compression Pressure

Procedure for measuring cylinder compression pressure.

Injection Nozzle

Instructions for testing and adjusting injection nozzles.

Turbocharger

Describes turbocharger maintenance and cleaning procedures.

Diagnosis and Remedy

Troubleshooting guide for common engine starting issues.

DISASSEMBLY AND REASSEMBLY OF MAJOR COMPONENTS

Disassembly

General precautions and procedures for disassembling engine components.

Turbo charger

Instructions for removing hoses, pipes, and the turbocharger.

Fuel injection pump

Procedure for removing oil pipes and disassembling the fuel injection pump.

Reassembly

General precautions and procedures for reassembling engine components.

Valve clearance adjustment

Guide for adjusting valve clearance using a feeler gauge.

COMMISIONING AND OPERATION

Preparation

Ensures all necessary checks and preparations are made before commissioning.

Breaking-In

Guidelines for operating a new or overhauled engine for the first 50 hours.

Check points for break-in

Specific checks to perform during the initial engine running period.

Operating after break-in

Recommendations for operating the engine after the break-in period.

Engine oil

Details on checking oil level, change intervals, and recommended oils.

Inspections After Starting

Checks to perform after the engine has started running.

Pressure of lubricating oil

Monitoring lubricating oil pressure during operation.

Temperature of cooling water

Monitoring cooling water temperature for normal engine operation.

Operation in Winter Time

Precautions for operating the engine in cold weather conditions.

MAINTENANCE AND CARE

Periodical Inspection and Maintenance

Importance of regular inspection, adjustment, and maintenance for optimal performance.

Lubrication System

Importance of engine oil and filter for engine life and performance.

Exchanging of lubrication oil

Procedure for changing engine oil and oil filter after break-in.

Oil level gauge

Instructions for checking engine oil level using the gauge.

Oil exchange procedure

Detailed steps for exchanging engine oil.

Replacement of oil filter cartridge

Procedure for replacing the oil filter cartridge.

Adjustment of Valve Clearance

General information and method for adjusting valve clearance.

Replacement of Fuel Filter

Procedure for replacing the fuel filter cartridge.

Fuel System Checks

Ensuring proper fuel quality, tank levels, and priming the fuel system.

Injection Nozzle Maintenance

Maintenance procedures for injectors, including pressure and spray pattern checks.

MAINTENANCE OF MAJOR COMPONENTS

General information of fuel system

Overview of the fuel system components and their connections.

Injection pump

Details on servicing injection pump components.

Fuel feed pump

General descriptions, construction, and operation of the fuel feed pump.

Testing

Tests for suction capacity, delivery, and sealing of the feed pump.

Injection nozzle

General descriptions of injection nozzles and their function.

1-spring type (DE12 T)

Disassembly, reassembly, adjustment, and testing of 1-spring type injection nozzles.

2-spring type (DE12 TIS)

Disassembly, inspection, and adjustment of 2-spring type injection nozzles.

Inspection of pre-lift

Procedures for inspecting the needle valve's pre-lift value.

Inspection of secondary opening pressure

Procedures for checking and adjusting secondary opening pressure.

Cooling System

General information and specifications of the engine's cooling system.

Thermostat

General descriptions, data, inspection, and replacement of the thermostat.

Lubricating System

General descriptions, specifications, and diagram of the lubricating system.

Oil pump

Disassembly, inspection, correction, and reassembly of the oil pump.

Oil filter

Information on the oil filter type and replacement intervals.

Turbocharger

Main data, specifications, and operating principle of the turbocharger.

Precautions for operation

Precautions for starting, operating, and stopping the engine.

Walk-around check and servicing

Maintenance procedures for intake, exhaust, fuel, and lubricating systems.

Diagnostics and troubleshooting

Troubleshooting guide for turbocharger related issues like smoke and sound.

Summary

SAFETY REGULATIONS & ENGINE SPECIFICATIONS

General Notes

Provides essential information for safe operation and maintenance of engines.

Regulations Designed to Prevent Accidents

Details safety regulations for commissioning, starting, operation, and maintenance.

Regulations Designed to Prevent Damage to Engine and Premature Wear

Guidelines to prevent engine damage and premature wear during operation.

Notes on Safety in Handling Used Engine Oil

Precautions for safe handling and disposal of used engine oil.

General Repair Instructions

Provides instructions for performing service and repair operations safely and correctly.

Engine Specification

Details technical specifications for different engine models.

Engine power

Lists performance data including power, torque, and speeds for various engine models.

Performance curve

Illustrates performance curves (power, torque, fuel consumption) for specific engine models.

TECHNICAL INFORMATION

Engine Type

Describes the engine type, combustion bowl, cylinder block, and crankshaft.

Engine Oil

Provides information on checking, changing, and recommended engine oils.

Fuel System

Describes the fuel delivery path from tank to injection nozzles.

Fuel filter

Explains the functions and replacement interval of the fuel filter.

Valve Clearance Adjust Procedure

Step-by-step guide for adjusting valve clearance.

Cylinder Compression Pressure

Procedure for measuring cylinder compression pressure.

Injection Nozzle

Instructions for testing and adjusting injection nozzles.

Turbocharger

Describes turbocharger maintenance and cleaning procedures.

Diagnosis and Remedy

Troubleshooting guide for common engine starting issues.

DISASSEMBLY AND REASSEMBLY OF MAJOR COMPONENTS

Disassembly

General precautions and procedures for disassembling engine components.

Turbo charger

Instructions for removing hoses, pipes, and the turbocharger.

Fuel injection pump

Procedure for removing oil pipes and disassembling the fuel injection pump.

Reassembly

General precautions and procedures for reassembling engine components.

Valve clearance adjustment

Guide for adjusting valve clearance using a feeler gauge.

COMMISIONING AND OPERATION

Preparation

Ensures all necessary checks and preparations are made before commissioning.

Breaking-In

Guidelines for operating a new or overhauled engine for the first 50 hours.

Check points for break-in

Specific checks to perform during the initial engine running period.

Operating after break-in

Recommendations for operating the engine after the break-in period.

Engine oil

Details on checking oil level, change intervals, and recommended oils.

Inspections After Starting

Checks to perform after the engine has started running.

Pressure of lubricating oil

Monitoring lubricating oil pressure during operation.

Temperature of cooling water

Monitoring cooling water temperature for normal engine operation.

Operation in Winter Time

Precautions for operating the engine in cold weather conditions.

MAINTENANCE AND CARE

Periodical Inspection and Maintenance

Importance of regular inspection, adjustment, and maintenance for optimal performance.

Lubrication System

Importance of engine oil and filter for engine life and performance.

Exchanging of lubrication oil

Procedure for changing engine oil and oil filter after break-in.

Oil level gauge

Instructions for checking engine oil level using the gauge.

Oil exchange procedure

Detailed steps for exchanging engine oil.

Replacement of oil filter cartridge

Procedure for replacing the oil filter cartridge.

Adjustment of Valve Clearance

General information and method for adjusting valve clearance.

Replacement of Fuel Filter

Procedure for replacing the fuel filter cartridge.

Fuel System Checks

Ensuring proper fuel quality, tank levels, and priming the fuel system.

Injection Nozzle Maintenance

Maintenance procedures for injectors, including pressure and spray pattern checks.

MAINTENANCE OF MAJOR COMPONENTS

General information of fuel system

Overview of the fuel system components and their connections.

Injection pump

Details on servicing injection pump components.

Fuel feed pump

General descriptions, construction, and operation of the fuel feed pump.

Testing

Tests for suction capacity, delivery, and sealing of the feed pump.

Injection nozzle

General descriptions of injection nozzles and their function.

1-spring type (DE12 T)

Disassembly, reassembly, adjustment, and testing of 1-spring type injection nozzles.

2-spring type (DE12 TIS)

Disassembly, inspection, and adjustment of 2-spring type injection nozzles.

Inspection of pre-lift

Procedures for inspecting the needle valve's pre-lift value.

Inspection of secondary opening pressure

Procedures for checking and adjusting secondary opening pressure.

Cooling System

General information and specifications of the engine's cooling system.

Thermostat

General descriptions, data, inspection, and replacement of the thermostat.

Lubricating System

General descriptions, specifications, and diagram of the lubricating system.

Oil pump

Disassembly, inspection, correction, and reassembly of the oil pump.

Oil filter

Information on the oil filter type and replacement intervals.

Turbocharger

Main data, specifications, and operating principle of the turbocharger.

Precautions for operation

Precautions for starting, operating, and stopping the engine.

Walk-around check and servicing

Maintenance procedures for intake, exhaust, fuel, and lubricating systems.

Diagnostics and troubleshooting

Troubleshooting guide for turbocharger related issues like smoke and sound.

Daewoo DE12TIA Specifications

General IconGeneral
BrandDaewoo
ModelDE12TIA
CategoryEngine
LanguageEnglish

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