Doosan G15S-5 Manuale di servizio - Pagina 3

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Index

Chapter 1. GENERAL INFORMATION

Precautions before Service ................................. 7

Tightening Torque ............................................. 10

Recommended Lubricants and Capacities....... 11

Engine Model and Engine Serial Number ......... 12

General Specification ........................................ 13

Engine Power and Torque ................................. 15

Chapter 2. RECOMMENDED

MAINTENANCE

General Maintenance......................................... 16

Test Fuel System for Leaks........................... 16

Inspect Engine for Fluid Leaks ...................... 16

Inspect Vacuum Lines and Fittings................ 16

Inspect Electrical System .............................. 16

Inspect Foot Pedal Operation........................ 16

Engine Oil Classification................................ 17

Checking Engine Oil Level ............................ 18

Replacing Engine Oil and Filter ..................... 18

Checking Compressed Pressure ................... 19

Adjusting Timing Belt Tension ....................... 20

Cooling System Maintenance............................ 21

Coolant Recommendation............................. 21

Check Coolant Level ..................................... 21

Inspect Coolant Hoses .................................. 21

Checking coolant leaks ................................. 22

Specific gravity test ....................................... 22

Relation between Coolant concentration and

Specific Gravity............................................. 22

Checking and Adjusting Drive Belt ................ 23

Adjusting....................................................... 24

Checking Belt for Damage ............................ 24

Ignition System Maintenance ............................ 25

Inspect Battery System ................................. 25

G420F(FE) Service Manual

Inspect Ignition System................................. 25

Inspection of Ignition Timing ......................... 25

Inspection of Spark Plug ............................... 26

Fuel System Maintenance ................................. 28

Replace LP Fuel Filter Element..................... 28

Testing Fuel Lock-off Operation .................... 29

Pressure Regulator/Converter Inspection...... 29

Inspect Air/Fuel Valve Mixer Assembly ......... 30

Inspect for Intake Leaks................................ 30

Inspect Throttle Assembly............................. 30

Checking the TMAP Sensor.......................... 30

Exhaust System Maintenance........................... 30

Inspect Engine for Exhaust Leaks................. 30

Maintenance Schedule ...................................... 31

Chapter 3. ENGINE MECHANICAL

SYSTEM

General Information........................................... 33

Engine Outline.............................................. 33

Specifications ............................................... 34

Specifications ............................................... 35

Torque Specification ..................................... 38

Special Tools................................................ 39

Troubleshooting............................................ 41

Timing Belt System ........................................... 42

Components ................................................. 42

Removal ....................................................... 43

Inspection..................................................... 44

Assembly...................................................... 46

PCV Valve .......................................................... 48

Outline and Operation Principle .................... 48

Service Procedure ........................................ 49

Intake and Exhaust System............................... 50

Intake Manifold ............................................. 50

Exhaust Manifold .......................................... 52

Cooling System ................................................. 54

General Description ...................................... 54

Testing and Adjusting ................................... 55

Index