Doosan DX255 Excavator Service Manual

Table of Contents:-

Safety
Track Excavator Safety………………………………………………………………. SP000014
Specifications
Specification for DX255LC………………………………………………………….. SP001009
General Maintenance
General Maintenance Procedures……………………………………………….. SP000016
Standard Torques……………………………………………………………………… SP000813
Upper Structure
Cabin ………………………………………………………………………………………. SP000943
Counterweight…………………………………………………………………………… SP000940
Fuel Tank…………………………………………………………………………………. SP001012
Fuel Transfer Pump…………………………………………………………………… SP000021
Swing Bearing…………………………………………………………………………… SP001068
Swing Reduction Gear……………………………………………………………….. SP001015
Lower Structure and Chassis
Track Assembly ………………………………………………………………………… SP001016
Engine and Drive Train
Drive Coupling (Main Pump)……………………………………………………….. SP001069
Hydraulics
Hydraulic System Troubleshooting, Testing and Adjustment …………… SP001017
Accumulator……………………………………………………………………………… SP000028
Center Joint (Swivel)………………………………………………………………….. SP000029
Cylinders………………………………………………………………………………….. SP000030
Swing Motor……………………………………………………………………………… SP001020
Travel Motor……………………………………………………………………………… SP001021
Gear Pump ………………………………………………………………………………. SP000931
Main Control Valve ……………………………………………………………………. SP000034
Axial Piston Pump……………………………………………………………………… SP001022
PTO Server………………………………………………………………………………. SP000933
Remote Control Valve (Work Lever / Joystick) ………………………………. SP000069
Travel Control Valve (with Damper)……………………………………………… SP000070
Solenoid Valve Assembly …………………………………………………………… SP000445
Breaker EPPR Valve (Opt) …………………………………………………………. SP000192
Hydraulic Schematic (DX255LC)…………………………………………………. SP001023
Electrical System
Electrical System………………………………………………………………………. SP001025
Electrical Schematic (DX180LC/DX225LC/225NLC/255LC) ……………. SP000936
Attachments
Boom and Arm………………………………………………………………………….. SP001026
Bucket……………………………………………………………………………………… SP000939

Doosan DX255 Manual Instruction Extract:

Periodic, regular checks of bearing displacement should be made at least twice a year. Use a dial indicator. Push the attachment against the ground to lift the excavator off the ground and take measurements at 4 points, 90 apart, around the circumference of the bearing.

Record and keep all measurements. Play in the bearing should increase minimally from one inspection to the next. Eventually, however, as the bearing begins to approach the limit of its service life, clearance increases become much more pronounced and the actual measured play in the bearing could exceed twice the value that was measured when the machine was new.

How to Use The Doosan DX255 Excavator Guide Manual:

This manual provides information for servicing the DX255 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 DX255 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.