Doosan DX55W Install guide

K1038983E Shop Manual Copyright 2008 DOOSAN
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.
Shop Manual
K1038983E
Serial Number 5001 and Up
DX55W

Table of Contents
Page I
1Table of Contents
Safety
Wheel Excavator Safety .......................................................................SP001502
Specifications
Specification for DX55W.......................................................................SP001503
General Maintenance
General Maintenance Procedures........................................................ SP000016
Standard Torques................................................................................. SP000813
Upper Structure
Cabin .................................................................................................... SP001504
Counterweight....................................................................................... SP001505
Fuel Tank.............................................................................................. SP001506
Fuel Transfer Pump..............................................................................SP001507
Swing Bearing....................................................................................... SP001508
Lower Structure and Chassis
Ram Lock Valve.................................................................................... SP001560
Axle....................................................................................................... SP001553
Engine and Drive Train
Engine...................................................................................................SP001558
Transmission ........................................................................................ SP001509
Drive Coupling (Main Pump)................................................................. SP001482
Hydraulics
Hydraulic System Troubleshooting, Testing and Adjustment...............SP001510

Table of Contents
Page II
Accumulator.......................................................................................... SP000984
Center Joint (Swivel)............................................................................. SP001511
Cylinders............................................................................................... SP001512
Main Control Valve ...............................................................................SP001513
Swing Motor.......................................................................................... SP001485
Travel Motor.......................................................................................... SP001110
Steering Valve ...................................................................................... SP001514
Remote Control Valve (Work Lever / Joystick)..................................... SP001489
Dozer Valve.......................................................................................... SP001490
Accelerator Pedal Valve (Hydraulic).....................................................SP001515
Service Brake Pedal Valve...................................................................SP001516
Hydraulic Schematic (DX55W).............................................................SP001517
Electrical System
Electrical System.................................................................................. SP001518
Electrical Schematic (DX55W).............................................................. SP001557
Attachments
Boom and Arm...................................................................................... SP001519
Bucket...................................................................................................SP001496

1Safety

SP001502
Page 1
Wheel Excavator Safety
SP001502
WHEEL EXCAVATOR SAFETYSP001502
Wheel
Excavator
Safety
Edition 1

SP001502
Wheel Excavator Safety
Page 2
MEMO

SP001502
Page 3
Wheel Excavator Safety
Table of Contents
Wheel Excavator Safety
Safety Precautions ...............................................5
Applicable Models ................................................5
To the Operator of a Excavator............................6
General Safety Essentials ..................................10
Location of Safety Labels...................................11
Summary of Safety Precautions for Lifting in
Working Mode ....................................................12
Unauthorized Modifications ................................13
General Hazard Information ...............................13
Before Starting Engine .......................................23
Machine Operation.............................................28
Maintenance.......................................................33
Battery ................................................................41
Towing................................................................43
Shipping and Transportation ..............................44
Lifting With Sling.................................................44

SP001502
Wheel Excavator Safety
Page 4
MEMO