Doosan DX180LC-3 Excavator Service Manual

Table of Contents :-

Safety
Track Excavator Maintenance Safety …………………………………………… SP002322
Specifications
Specifications for DX180LC-3……………………………………………………… SP002521
General Maintenance
General Maintenance Instructions……………………………………………….. SP002454
Standard Torques……………………………………………………………………… SP002404
Upper Structure
Cabin ………………………………………………………………………………………. SP002324
Counterweight…………………………………………………………………………… SP002522
Fuel Tank…………………………………………………………………………………. SP002523
Fuel Transfer Pump (Option) ………………………………………………………. SP002537
Swing Bearing…………………………………………………………………………… SP002329
Lower Structure and Chassis
Track Assembly ………………………………………………………………………… SP002524
Engine and Drivetrain
Engine Coolant Heater (Option) ………………………………………………….. SP002328
Drive Coupling (Main Pump)……………………………………………………….. SP002525
Hydraulics
Hydraulic System Troubleshooting, Testing and Adjustment …………… SP002608
Accumulator……………………………………………………………………………… SP002455
Center Joint (Swivel)………………………………………………………………….. SP002456
Cylinders………………………………………………………………………………….. SP002579
Swing Device……………………………………………………………………………. SP002498
Travel Device……………………………………………………………………………. SP002514
Main Pump……………………………………………………………………………….. SP002531
Gear Pump ………………………………………………………………………………. SP002500
Main Control Valve ……………………………………………………………………. SP002584
Remote Control Valve (Work Lever / Joystick) ………………………………. SP002395
Travel Control Valve (with Damper)……………………………………………… SP002381
Solenoid Valve Assembly …………………………………………………………… SP002406
Breaker EPPR Valve (Option) …………………………………………………….. SP002458
Dozer Valve ……………………………………………………………………………… SP002529
Hydraulic Schematic (DX180LC-3)………………………………………………. SP002532
Electrical System
Electrical System ………………………………………………………………………. SP002337
Electrical Schematic ………………………………………………………………….. SP002508
Attachments
Boom and Arm………………………………………………………………………….. SP002533
Bucket……………………………………………………………………………………… SP002506

Doosan DX180LC-3 Manual Instruction Extract:

TROUBLESHOOTING, TESTING AND ADJUSTMENT

Inspection
The center joint must be checked for evidence of external oil leakage every 2,000 operating hours. Leaking or defective O-rings are an indication that dirt and other contaminants could be getting inside the assembly, which will promote accelerated, abnormal wear and can cause early failure of the assembly.
If internal seals or other sliding surface components are worn and there is internal fluid leakage, complete overhaul and repair or replacement of the center joint may be required.

Testing
To check pressure through the center joint, make up a test kit from the following equipment list:
• 700 bar (10,000 psi) pressure gauge.
• Adapters, connectors, piping and flange block off plates conforming to those used in high-pressure piping connections of the excavator.
• A high-pressure relief valve with a setting pressure 1.5 times maximum system pressure.
• A stop valve.
• A manually operated, in-line changeover valve.
Install the changeover valve upstream from one of the stem high-pressure ports. Connect the pressure gauge downstream from one of the body ports. Install the stop valve between the changeover valve and the stem of the center joint. Other components must be installed according to the layout in the block diagram. The test kit is used to pressurize the center swivel above normal working pressure and lock in the higher pressure (as the stop valve is closed manually) for a leak down test.

NOTE: The same type of kit can also be made up for the drain port (return line) side of the center joint. Use appropriate piping, connectors, test gauges, etc.,

How to Use The Doosan DX180LC-3 Excavator Guide Manual:

This manual provides information for servicing the DX180LC-3 Doosan Excavator. All service procedures are broken down into detailed steps, listed in their recommended sequence. The manual uses both photographs and drawings to help locate and itemize components. The table of Contents on the preceding pages is your best tool for finding the service procedure you need. Be certain to observe all Safety information included in these pages.

A schematic of each of the major engine systems is provided at the beginning of the section of the manual devoted to troubleshooting and repairing that particular system.

Basic safety precautions are list in the Safety section of the Doosan DX180LC-3 Excavator Service Manual. Additional safety precautions are list in the Safety section of the owner/operation/maintenance publication. Specific safety warnings for all these publications are provided in the description of operations where hazards exist. WARNING labels have also been put on the product to provide instructions and to identify specific hazards.