Doosan DH320 Excavator Shop Manual – PDF DOWNLOAD
DESCRIPTION:
Doosan DH320 Excavator Shop 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 questionaire or recommendation in connection with this manual, please do not hesitate to contact our overseas service department or branch office in your territory. DAEWOO HEAVY INDUSTRIES LTD.
- 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-
1. GENERAL REPAIR INSTRUCTIONS
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, O-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 disassembled parts neatly in groups. Keeping fixing bolts and nuts separate is very important as they vary in hardness and design depending on position of installation.
5. Clean the parts before inspection 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. -2- 2.
GENERAL DESCRIPTION
- Models D2366 is 6-cylinder, 4-cycle, in-line, vertical type engines. It is water-cooled and use 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 VL 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 fuel 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 consumption
TABLE OF CONTENTS:
Doosan DH320 Excavator Shop Manual – PDF DOWNLOAD
ENGINE (Dl 146) PAGE
SECTION 1 GENERAL INFORMATION 1
2 PREVENTIVE MAINTENANCE 7
3 ENGINE ASSEMBLY 17
4 COOLING SYSTEM 53
5 LUBRICATING SYSTEM 61
6 FUEL SYSTEM 69
7 TURBOCHARGER• 121
• SUPPLEMENT 133
HYDRAULIC EQUIPMENT( DH 320)
SECTION 1 SPECIFICATION 145
2 OPERATION PRINCIPLE 152
3 UPPER STRUCTURE 161
1 STRUCTURE 161
2 HYDRAULIC PUMP(Main pump, Regulator, Pilot pump) 162
3 CONTROL BLOCK 171
4 SWING DEVICE(Swing motor, Swing reduction gear) 186
5 CENTER JOINT 215
5 SWING BEARING 217
7 REMOTE CONTROL VAL VE 220
8 TRAVEL CONTROL VAL VE 238
9 ACCUMULATOR 242
4 UNDERCARRIAGE 244
1 STRUCTURE 244
2 TRAVEL DEVI CE 245
3 FRONT IDLER 300
4 LOWER ROLLER 303
5 UPPER ROLLER 306
6 TRACK SPRING AND ADJUSTI:N’G CYLI:–JDER 309
5 HYDRAULIC CYLINDER 311
6 ELECTRICAL SYSTEM 324
1 SYSTEM OVERVIEW 324
2 BATTERY 329
3 ENGINE STARTING SYSTEM 333
4 ENGINE STO? SYSTEM 339
5 ENGINE PREHEATING SYSTE\1 343
6 CHi\RGING SYSTE’\1 345
7 MONITORING SYSTEM 348
8 P 0 S 357
9 \VI::JDSHIELD \\iJPER 369
10 CAR RADIO AND CASSETTE••»••••»•• 372
11 AIR CO::JDITIONING SYSTEM 376
7 TROUBLESHOOTING 386
8 PERFORMA1″\fCE ST AND ARD 403
• HYDRAULIC CIRCUIT DIAGRAM
• ELECTRIC CIRCUIT DIAGRAM
CONTENTS
SECTION 2
PREVENTIVE MAINTENANCE
INDEX
PAGE
1 SERVICING OF ENGINE 8
1 1 GENERAL — 8
12 INSPECTION AND MAINTENANCE PROCEDURE 8
2 TROUBLE SHOOTING 11
21 HARD STARTING 11
22 ENGINE RUNS ROUGH 12
23 ENGINE LACKS POWER 13
24 ENGINE NOISY — 14
25 FUEL CONSUMPTION EXCESSIVE
26 OIL CONSUMPTION EXCESSIVE — 15
27 EXHAUST SMOKE EXCESSIVE
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PLEASE NOTE:
- This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
- Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.
S.M