DOOSAN DX420LC EXCAVATOR SHOP MANUAL – PDF DOWNLOAD
DESCRIPTION:
DOOSAN DX420LC EXCAVATOR SHOP MANUAL – PDF DOWNLOAD
- DOOSAN 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
TO THE OPERATOR OF A DOOSAN DAEWOO EXCAVATOR
- Unsafe use of the excavator could lead to serious injury or death. Operating procedures, maintenance and equipment practices or traveling or shipping methods that do not follow the safety guidelines on the following pages could cause serious, potentially fatal injuries or extensive damage to the machine or nearby property
- Please respect the importance of taking responsibility for your own safety, and that of other people who may be affected by your actions.
- The safety information on the following pages is organized into the following sections
1. “Location of Safety Labels” on page 1-5
2. “Summary of Safety Precautions for Lifting in Digging
Mode” on page 1-15
3. “Unauthorized Modifications” on page 1-16
4. “General Hazard Information” on page 1-16
5. “Before Starting Engine” on page 1-25
6. “Machine Operation” on page 1-29
7. “Maintenance” on page 1-36
8. “Battery” on page 1-45
9. “Towing” on page 1-47
10. “Shipping and Transportation” on page 1-48
11. “Excavator Rated Lift Capacity Tables” on page 1-49
- Improper operation and maintenance of this machine can be hazardous and could result in serious injury or death. Operator and maintenance personnel should read this manual thoroughly before beginning operation or maintenance.
- Keep this manual in the storage compartment to the rear of the operator’s seat, and have all personnel involved in working on the machine read the manual periodically. Some actions involved in operation and maintenance of the machine can cause a serious accident, if they are not done in a manner described in this manual. The procedures and precautions given in this manual apply only to intended uses of the machine.
- If you use your machine for any unintended uses that are not specifically prohibited, you must be sure that it is safe for any others. In no event should you or others engage in prohibited uses or actions as described in this manual.
- DOOSAN delivers machines that comply with all applicable regulations and standards of the country to which it has been sent. If this machine has been purchased in another country or purchased from someone in another country, it may lack certain safety devices and specifications that are necessary for use in your country.
- If there is any question about whether your product complies with the applicable standards and regulations of your country, consult DOOSAN or your DOOSAN distributor before operating the machine.
TABLE OF CONTENTS:
DOOSAN DX420LC EXCAVATOR SHOP MANUAL – PDF DOWNLOAD
Safety Precautions 5
Applicable Models 5
To the Operator of a DOOSAN Daewoo Excavator
General Safety Essentials 10
Location of Safety Labels 11
Summary of Safety Precautions for Lifting in
Digging Mode 12
Unauthorized Modifications 13
General Hazard Information 13
Before Starting Engine 22
Machine Operation 26
Maintenance 33
Battery 42
Towing 44
Shipping and Transportation 45
Lifting With Sling 45
Safety
Track Excavator Safety SP000256
Specifications
Specification for DX420LC SP000257
General Maintenance
General Maintenance Procedures SP000016
Standard Torques SP000017
Upper Structure
Cabin SP000018
Counterweight SP000265
Fuel Tank SP000264
Swing Bearing SP000262
Swing Reduction Gear SP000249
Lower Structure and Chassis
Track Assembly SP000263
Air Conditioner SP000025
Engine and Drive Train
Drive Coupling (Main Pump) SP000026
Hydraulics
Hydraulic System Troubleshooting, Testing and Adjustment SP000273
Accumulator SP000028
Center Joint (Swivel) SP000181
Cylinders SP000030
Swing Motor SP000261
Travel Motor (With Gearbox) SP000266
Main Pump SP000186
Control Valve (KVMG-400-DA) SP000187
Remote Control Valve (Work Lever / Joystick) SP000189
Travel Control Valve (With Damper) SP000070
Solenoid Valve Assembly SP000191
Breaker EPPR Valve (Opt) SP000192
Fan Motor (Vane Type) SP000209
Gear Pump (Fan Cooling Drive) SP000208
Fan Cooling Flow In-Out Change Valve SP000207
Hydraulic Schematic (DX420LC) SP000274
Electrical System
Electrical System SP000269
Electrical Schematic (DX420LC) SP000275
Attachments
Boom and Arm SP000040
Bucket SP000041
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- This is the SAME MANUAL used by the dealerships to diagnose your vehicle
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S.M