Doosan DX340LCA Excavator Service Manual Workshop Guide

Manual Included: Shop Manual: 818 Pages Specifications: Brand: Doosan Model: DX340LCA Serial Number: 5000 and Up Type: Excavator Manuals: Shop Manual Publication Numbers: 950106-00268E Language: English Format: PDF Description Table of Contents 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