Doosan DH220LC Excavator Service Manual – PDF DOWNLOAD
DESCRIPTION:
Doosan DH220LC Excavator Service Manual – PDF DOWNLOAD
FOREWARD
- This maintenance manual is designed to serve as a reference for distributors of DHI. To maintain the excavator in optimum condition and retain maximum performance for a long time, CORRECT OPERATION and PROPER MAINTENANCE are essential.
- This manual is in detail explained about Specifications, Operation Principle, Diassembly, and Reassembly, Troubleshooting and Maintenance Standard. Therefore, when the machine goes wrong, repair the machine by correct procedure after reading this manual. If you have any question air or recommendation in connection
- ·with this manual, please do not hesitate to contact our overseas service department or branch office in your territory
GENERAL REPAIR INSTRUCTION
·1. The use of proper tools and special tools where specified, is important to efficient and reliable service operation.
2. Use genuine Daewoo parts.
3. Used cotter pins, gaskets, 0-rings, oil seals, lock washers and self lock nuts should be discarded and new ones should be prepared for installation as normal function of the parts can not be maintained if these parts are reused.
4. To facilitate proper and smooth reassembly operation, keep dis2.ssembled parts neatly in group. Keeping fixing bolts and nuts sepa – rate is very important as they vary in hardness and design depending on position of installation.
5. Clean the parts before in or reassembly. Also clean oil ports, etc. using compressed air to make certain they are free from restrictions.
6. Lubricate rotating and sliding faces of the parts with oil or grease before installation.
7. When necessary, use a sealer on gaskets to prevent leakage.
8. Carefully observe all specifications for bolt and nut torques.
9. When service operation is completed, make a final check to be sure service has been done properly.
GENERAL DESCRIPTION
- Model Dl 146 is 6-cylinder, 4-cycle, in-line, vertical type engines. It is water-cooled and used Toroidal combustion system. 2. 1 Engine Characteristics The engine operates according to the Toroidal combustion system developed by Daewoo Heavy Industrial Co. of Korea and A \TL Co. of Austria.
- The main design features of this system are the combustion chamber arranged in the center of the piston and the swirling passage in the cylinder head. Due to the swirling passage, the air entering the cylinder through the helical port designed specially during intake stroke is imparted a strong rotary motion in the combustion chamber and the complicated turbulence motion created by the swirl produced during compression stroke and strong squish flow makes the fu el be mixed more sufficiently with air.
- During power stroke the fuel injected from a multi-orifice nozzle is mixed sufficiently with air for complete combustion, so that the improvement of performance is achieved. Engines with the Toroidal combustion system are characterized by their quiet running, high flexibility and very low specific fuel and oil con – Sumption.
- Daewoo reserves the right to improve our products in a continuing process to provide the best possible product to the market place. These improvements can be implemented at any time with no obligation to change materials on previously sold products.
- It is recommended that consumers periodically contact their distributors for recent documentation on purchased equipment. This documentation may include attachments and optional equipment that is not available in your machine’s package.
- Please call your distributor for additional items that you may require. Illustrations used throughout this manual are used only as a representation of the actual piece of equipment, and may vary from the actual item. 2023-7047
TABLE OF CONTENTS:
Doosan DH220LC Excavator Service Manual – PDF DOWNLOAD
(ENGINE : D1146)
SECTION 1. GENERAL INFORMATION……………………………………………………………………………………………………………………………….. 1
2. PREVENTIVE MAINTENANCE ………………………………………………………………………………………………………………………… 7
3. MAJOR MAINTENANCE …………………………………………………………………………………………………………………………………… 17
4. COOLING SYSTEM …………………………………………………………………………………………………………………………………………….. 53
5. LUBRICATING SYSTEM ……………………………………………………………………………………………………………………………………. 60
6. FUEL SYSTEM ……………………………………………………………………………………………………………………………………………………. 69
SUPPLEMENT
1. ENGINE TIGHTENING TORQUE··········· ………………………………………………………………………………………………………….. 118
2. MAINTENANCE SPECIFICATION··· …………………………………………………………………………………………………………………. 119
(HYDRAULIC EQUIPMENT: DH220LC)
SECTION 1. SPECIFICATION .. •·· ……………………………………………………………………………………………………………………………………………… 135
SECTION 2. OPERATION PRINCIPLE …………………………………………………………………………………………………………………………………. 143
SECTION 3. UPPER STRUCTURE ………………………………………………………………………………………………………………………………………. 159
1. STRUCTURE ………………………………………………………………………………………………………………………………………………………… 159
2. HYDRAULIC PUMP(Main pump, Regulator, Pilot pump) ………………………………………………………………………. 160
3. CONTROL VALVE ………………………………………………………………………………………………………………………………………………. 188
4. SWING DEVICE (Swing motor, Swing reduction gear) …………………………………………………………………………… 200
5. CENTER JOINT …………………………………………………………………………………………………………………………………………………… 238
6. SVVING BEARING …………………………………………………………………………………………………………………………………………….. 240
7. REMOTE CONTROL VALVE …………………………………………………………………………………………………………………………… 243
8. TRA\TEL CONTROL VALVE· .. ·· …………………………………………………………………………………………………………………………. 261
9. ACCU:MULATOR ………………………………………………………………………………………………………………………………………………… 265
10. HYDRA.ULIC OIL TA:’.\IKS A..l\JD FILTERS …………………………………………………………………………………………………… 267
SECTION 4. UNDERCARRIAGE ……………………………………………………………………………………………………………………………………………. 269
1. STRUCTURE ………………………………………………………………………………………………………………………………………………………… 269
2. TRA \”EL DEVICE ………………………………………………………………………………………………………………………………………………… 270
3. FRONT IDLER …………………………………………………………………………………………………………………………………………………….. 310
4. LOWER ROLLER·· ……………………………………………………………………………………………………………………………………………….. 313
5. UPPER ROLLER …………………………………………………………………………………………………………………………………………………. 316
6. TR!’.\CK SPRING AND ADJUSTING CYLINDER ………………………………………………………………………………………… 319
SECTION 5. HYDRAULIC CYLINDER …………………………………………………………………………………………………………………………………… 327
SECTION 6. ELECTRICAL SYSTEM …………………………………………………………………………………………………………………………………….. 337
1. SYSTEiYI OVERVIEW ………………………………………………………………………………………………………………………………………… 337
2. STARTING SYSTE:tv! …………………………………………………………………………………………………………………………………………… 344
3. ENGIKE STOP SYSTE!vl …………………………………………………………………………………………………………………………………… 349
4. ENGINE PRE HEATING SYSTElvf …………………………………………………………………………………………………………………. 351
5. CHr\RGI:’.\IG SYSTElvl …………………………………………………………………………………………………………………………………………. 353
6. MONITORING SYSTE:vl ……………………………………………………………………………………………………………………………………. 356
7. E. P. 0. S …………………………………………………………………………………………………………………………………………………………………. 364
8. AUTO-IDLE SYSTEM …………………………………………………………………………………………………………………………………………. 372
9. PILOT CUT-OFF SYSTEM ……………………………………………………………………………………………………………………………….. 377
10. INTE\1MITIEt-,;T WINDS WIPER CONTROL …………………………………………………………………………………………… 380
11. CAR STEREO CIRCUIT …………………………………………………………………………………………………………………………………… 383
12. AIR CONDITIONING SYSTE:tvf ……………………………………………………………………………………………………………………….. 304
SECTION 7. TROUBLESHOOTING …………………………………………………………………………………………………………………………………………. 395
SECTION 8. MAINTENANCE STANDARD …………………………………………………………………………………………………………………………… 413
•ELECIBIC WIRING DIAGRAM
•HYDRAULIC CIRCUIT DIAGRAM
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PLEASE NOTE:
- This is not a physical manual but a digital manual – meaning no physical copy will be couriered to you. The manual can be yours in the next 2 mins as once you make the payment, you will be directed to the download page IMMEDIATELY.
- This is the same manual used by the dealers inorder to diagnose your vehicle of its faults.
- Require some other service manual or have any queries: please WRITE to us at [email protected]