Description

Doosan DX340LCA 2011 Workshop Manual

If you are turning wrenches on a Doosan DX340LCA 2011 Workshop Manual machine without the original factory book, you are working blind. I have seen too many shops waste billable hours chasing specs from third-party reprints—hydraulic pressures off by 200 psi, torque values that strip threads, wiring diagrams that don’t match the harness. This 818-page manual from DOOSAN is what the factory technicians used. It is the only source I trust when I need to verify a travel motor balance test or the exact sequence for accumulator precharge.

Page 1 of this manual confirms the serial number range—5001 and up—so you know you are looking at the right data. Page 5 gives you the full table of contents: Safety, Specifications, General Maintenance, Upper Structure, Lower Structure and Chassis, Engine and Drive Train, Hydraulics, and Electrical System. That is every system on the machine. No guesswork.

Doosan DX340LCA 2011 Workshop Manual: What the Table of Contents Reveals

Flip to page 5 and you see the chapters laid out in the order a technician works: Safety first, then Specifications, then General Maintenance. Under Hydraulics you get Hydraulic System Troubleshooting, Testing and Adjustment (SP002451). Under Engine and Drive Train you have the Drive Coupling (Main Pump) procedure. The Upper Structure section includes Cabin, Counterweight, Swing Reduction Gear. This is not a generic cut-and-paste PDF. It walks you through the exact component locations, test conditions, and performance standards—like boom cylinder natural drop tests and swing deceleration force validation. If you need to know the travel speed deviation allowed for your DX340LCA, the Performance Tests chapter gives you the pass/fail numbers.

Safety: Track Excavator Safety Procedures

Before you drop the bucket or break a hydraulic line, read the Safety section. It covers everything from accumulator hazard prevention to asbestos dust precautions, mounting and dismounting, and fire extinguisher location. There is a whole subsection on lifting capacity rating configuration and warning tag placement during maintenance. I have watched techs skip the part about high-pressure lines and blow a hose in their face. This section is not optional. DOOSAN designed it because they know what happens when you ignore the steps.

Specifications for DX340LCA

You need the machine’s working range? General dimensions? Engine performance curves? It is all in Specifications (SP002320). The manual lists approximate weight of workload materials, travel speed and travel motor balance test conditions, and swing speed deceleration force test methods. If you are rebuilding a cylinder, you reference the Cylinder Performance Tests—boom, arm, bucket. Every test has a set of conditions and a target value. No “tighten until it feels good.” Use the factory data.

Standard Torques: What’s Listed on Page?

The General Maintenance section includes Standard Torques (SP000813). This is the fastener spec table for the entire machine—bolts, nuts, flanges. Aftermarket manuals often reuse generic automotive torque charts. This book gives you the exact values for the DX340LCA. I have seen stripped threads on swing gear bolts because someone used a chart from a different model. Do not make that mistake. The Standard Torques table is your insurance.

Hydraulic System Troubleshooting and Testing

Hydraulics are where most shops lose money. The DX340LCA has an Accumulator section (SP000028), Center Joint/Swivel (SP000181), and cylinders. The troubleshooting chapter walks you through pump pressure checks, cylinder drift tests, and swing brake release. I once had a junior tech misdiagnose a slow swing as a bad motor. The manual’s swing speed test procedure showed him it was a relief valve setting. Saved four hours of labor. That is what factory documentation does: eliminates the guessing.

Factory Original vs Aftermarket Reprints

I have seen third-party manuals that claim to be OEM. They miss pages, blur diagrams, and swap torque units. This is a direct scan of the DOOSAN publication 950106-00268E. The binding is the same as what ships with the machine. If you buy a reprint, you risk getting a version that omits the safety labels or the latest bulletin. The only way to be sure is to get the original factory file.

Related Manuals you might need:

• Doosan Solar 340LC-V 2002 Workshop Manual – 656 Pages OEM
• Doosan DX140W, DX160W 2006 Workshop Manual – 1180 Pages
• Doosan DH130W 2023 Workshop Manual – 470 Pages OEM
• Manual Transmission – if you are working on the travel drives, the hydraulic motor assembly resembles manual transmission principles.
• Manual Transmission – additional background on gear reduction used in track drives.

Frequently Asked Questions

Does this manual cover the DX340LCA with serial numbers below 5001?

Page 1 states serial number 5001 and up. Machines built before that serial range may have different specs. Use the serial number listed.

Are the torque values in this manual in Imperial units?

Yes. The manual uses foot-pounds and inch-pounds. No metric conversion guesswork needed.

Can I use this manual for the DX300LCA?

No. Each model has its own specification tables and component locations. Using the wrong manual will give you incorrect test values and torque specs.

What is the most important safety precaution I should know before starting?

Read the Track Excavator Safety section completely. Pay special attention to the accumulator handling and high-pressure line warnings. One mistake there can cause serious injury or death. The manual covers those hazards on the first 40 pages for a reason.

You need the factory data to work on this machine. Not a photocopy, not a summary—the real document. Access the Factory Manual and keep it on your tablet or print the sections you need. Your wallet and your safety will thank you.