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QUANCHAI N490D User Manual

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ANHUI QUANCHAI ENGINE CO., LTD
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139
Engine Maintenance Manual
(Quanchai N485D and N490D Diesel Engine for generator)
ANHUI QUANCHAI ENGINE CO., LTD
Jul 2019

Table of Contents

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QUANCHAI N490D Specifications

General IconGeneral
BrandQUANCHAI
ModelN490D
CategoryEngine
LanguageEnglish

Summary

Part 1: Engine Overview

Safety Precautions

Essential safety guidelines and warnings for operating the diesel engine.

Technical Parameters

Detailed technical specifications and performance data for the diesel engines.

Exposed Parts of the Engine

Visual identification and labeling of external engine components on left and right sides.

Part 2: Disassembly, Assembly, and Adjustment

Valve Train Maintenance

Step-by-step instructions for disassembling and assembling the engine's valve train.

Crank Linkage Mechanism Service

Procedures for taking apart and reassembling the crank linkage mechanism.

Cooling System Service

Details on maintenance, disassembly, and assembly of the engine's cooling system components.

Lubrication System Service

Procedures for the lubrication system, including disassembly and assembly of its parts.

Starting System Maintenance

Instructions for the disassembly, assembly, and adjustment of the engine's starting system.

Fuel Supply System Service

Maintenance and assembly procedures for the engine's fuel supply system components.

Accessory Maintenance

Procedures for disassembling, assembling, and adjusting engine accessories like gears.

Part 3: Inspection, Adjustment, Fault Diagnosis, and Removal

Dynamic Checks

Performing dynamic checks on the engine during operation.

Engine Working Mechanisms

Explanation of the working principles of key engine mechanisms like valve train.

Inspection and Adjustment Procedures

Procedures for inspecting and adjusting critical engine parameters like valve clearance.

Engine Fault Diagnosis and Removal

Identifying and resolving common engine faults based on symptoms like smoke or abnormal sounds.

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