Doosan DX30Z Excavator Service Manual

Table of Content:-

Safety
Track Excavator Safety………………………………………………………………. SP001061
Specifications
Specification for DX30Z……………………………………………………………… SP001394
General Maintenance
General Maintenance Procedures……………………………………………….. SP000016
Standard Torques……………………………………………………………………… SP000813
Upper Structure
Cabin ………………………………………………………………………………………. SP001063
Swing Bearing…………………………………………………………………………… SP001064
Lower Structure and Chassis
Track Assembly ………………………………………………………………………… SP001395
Engine and Drive Train
Engine……………………………………………………………………………………… SP001254
Drive Coupling (Main Pump)……………………………………………………….. SP001066
Hydraulics
Accumulator……………………………………………………………………………… SP000028
Center Joint (Swivel)………………………………………………………………….. SP001067
Cylinders………………………………………………………………………………….. SP001396
Swing Motor……………………………………………………………………………… SP001400
Travel Motor……………………………………………………………………………… SP001102
Main Pump……………………………………………………………………………….. SP001433
Main Control Valve ……………………………………………………………………. SP001071
Remote Control Valve (Work Lever / Joystick) ………………………………. SP001072
Travel Control Valve ………………………………………………………………….. SP000839
Pedal Valve………………………………………………………………………………. SP001073
Hydraulic Schematic (DX30Z) …………………………………………………….. SP001397
Electrical System
Electrical System………………………………………………………………………. SP001142
Electrical Schematic (DX27Z/DX30Z)…………………………………………… SP001144
Attachments
Working Attachments…………………………………………………………………. SP001398
Bucket……………………………………………………………………………………… SP001076

Doosan DX30Z Manual Instruction Extract:

Check Valve (Load Check Valve) Assembly Procedures Standard Type Check Valve (See Figure 57) 1. Fix the Control Valve Body at workbench or hold it by two or more people.

2. Assemble Check Valve (3) and Check Valve Spring (4) in sequence at the center of Control Valve top surface.
Then, set Check Valve (3) vertically. (Check that the Check Valve is nearly at the center.)

3. Check that Check Valve Plug (6) is surely installed wit Oring (5) and then screw it into the part where Check Valve has been assembled.

4. Tighten Check Valve Plug (6) with specified torque by using 19-mm Screw Wrench (or Socket Wrench).
• The other Check Valves can be assembled in the same manner; use suitable parts in the drawing. (See Figure 58 and Figure 59.)
If not, Check Valve could not function or there could be damage.

How to Use The Doosan DX30Z Excavator Guide Manual:

This manual provides information for servicing the DX30Z 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 DX30Z 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.