Doosan DX340LCA Excavator Repair Manual PDF – 950106-00268E

Manuals: Shop Manual
Safety
Track Excavator Safety………………………………………………………………. SP002025
Specifications
Specification for DX340LCA ……………………………………………………….. SP002320
General Maintenance
General Maintenance Procedures……………………………………………….. SP000016
Standard Torques……………………………………………………………………… SP000813
Upper Structure
Cabin ………………………………………………………………………………………. SP001737
Counterweight…………………………………………………………………………… SP001738
Fuel Tank…………………………………………………………………………………. SP002321
Fuel Transfer Pump (Opt)…………………………………………………………… SP000021
Swing Bearing…………………………………………………………………………… SP001856
Swing Reduction Gear……………………………………………………………….. SP001740
Lower Structure and Chassis
Track Assembly ………………………………………………………………………… SP001741
Engine and Drive Train
Drive Coupling (Main Pump)……………………………………………………….. SP000026
Hydraulics
Hydraulic System Troubleshooting, Testing and Adjustment …………… SP002451
Accumulator……………………………………………………………………………… SP000028
Center Joint (Swivel)………………………………………………………………….. SP000181
Cylinders………………………………………………………………………………….. SP000030
Swing Motor……………………………………………………………………………… SP000261
Travel Motor……………………………………………………………………………… SP000253
Main Pump……………………………………………………………………………….. SP000186
Gear Pump ………………………………………………………………………………. SP000260
Main Control Valve ……………………………………………………………………. SP000034
Remote Control Valve (Work Lever / Joystick) ………………………………. SP000069
Travel Control Valve (With Damper)…………………………………………….. SP001743
Solenoid Valve Assembly …………………………………………………………… SP001622
Breaker EPPR Valve (Opt) …………………………………………………………. SP000192
Hydraulic Schematic DX300LC/DX300LCA/DX340LCA …………………. SP001752
Electrical System
Electrical System………………………………………………………………………. SP002453
Electrical Schematic DX300LCA / DX340LCA ………………………………. SP002031
Attachments
Boom and Arm………………………………………………………………………….. SP001851
Bucket……………………………………………………………………………………… SP001852
How to Use The Guide Manual:

This manual provides information for servicing the DX340LCA 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 DX340LCA 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.

Instructions Manual Extract:
| Symptoms
| Possible Causes
| Remedies
| 1. No rotation and
a. Pressure at swing motor inlet increase.b. Pressure at swing motor inlet shows no increase, and the swing motor is making irregular noises.
c.Pressure at swing motor inlet shows no increase, but without irregular noises from the swing motor.
| Swing brake not releasing
Internal damage to gearbox drive train
Overload
Swing motor drive shaft damage
Internal damage to gearbox drive train
Hydraulic pump or valve broken
| Check brake engagement and disengagement, check release pressure
Replace broken gears, drive train assemblies
Reduce load weight
Replace swing motor
Repair/replace broken or faulty assemblies
Troubleshoot hydraulic System
| 2. Oil leakage
a. From drive shaft
b. From bolted connections or other assembled surfaces
| Oil seal damaged
Assembly compound (joint sealer) old and not sealing, bolt not tight or flange warped
| Replace oil seal
Disassemble and check mating surfaces. Reapply Loctite, torque bolts to specifications
| 3. Excess heat
Gearbox casing becomes excessively hot, with or without irregular noise(s) during operation
| Low oil level
Bearings or gear worn but not completely inoperative
| Replace oil, refill to specified level
Repair or replace gearbox