Original Instructions
Copyright DOOSAN 2014
Serial Number 1001 and Up
Shop Manual
DX235LCR-5 Excavator
950106-01109E
October 2014
DOOSAN and the DOOSAN logo are registered
trademarks of DOOSAN Corporation in the United
States and various other countries around the
world.
Table of Contents
Page I
1Table of Contents
1 Safety
1
Track Excavator Maintenance Safety
2 Specifications
1
Specifications
3 General Maintenance
1
General Maintenance Instructions
2
Standard Torques
4 Engine
1
Engine
5 Upper Structure
1
Cabin
2
Counterweight
3
Oil Tank
4
Fuel Tank
5
Main Pump
6
Drive Coupling (Main Pump)
7
Main Control Valve
8
Swing Device
9
Joystick Valve (Work Lever)
10 Dozer Joystick Valve
11
Travel Control Valve (with Damper)
12 Solenoid Valve
13 EPPR Valve (One or Two Way)
14 Accumulator
15 Gear Pump (Rotating)
16 One Spool Valve (Rotating)
6 Lower Structure and Chassis
1
Swing Bearing
2
Center Joint
2
Center Joint (Dozer)
4
Travel Device
5
Track Assembly
6
Dozer System
Table of Contents
Page II
7 Front
1
Boom and Arm
2
Bucket
3
Cylinders
8 Hydraulic System
1
Hydraulic System
2
Hydraulic System Testing and Adjustment
3
Hydraulic System Troubleshooting
9 Electrical System
1
Electrical System
10 Options
1
One Way
2
Two-way
3
Rotating
4
Quick Coupler
11 Schematic
1
Hydraulic Schematic/Electrical Schematic
Track Excavator Maintenance Safety
1-1-1
DX235LCR-5
Track Excavator
Maintenance
Safety
Edition 1
Track Excavator Maintenance Safety
1-1-5
DX235LCR-5
SAFETY INSTRUCTIONS
SAFETY MESSAGES
Replace with Safety Messages Section on pages III and IV in
the Doosan Operation & Maintenance Manual.
WARNING
AVOID DEATH OR SERIOUS INJURY
Instructions are necessary before operating or servicing
machine. Read and understand
the Operation &
Maintenance Manual and signs (decals) on machine. Follow
warnings and instructions in the manuals when making
repairs, adjustments or servicing. Check for correct
function after adjustments repairs or service. Untrained
operators and failure to follow instructions can cause dea