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Need help?Do you have a question about the Daewoo Doosan DX140LC and is the answer not in the manual?
The provided document is a Shop Manual for the DX140LC Track Excavator, specifically for serial numbers 5001 and up. This manual details various aspects of the excavator, including safety, specifications, general maintenance, upper structure, lower structure and chassis, engine and drive train, hydraulics, electrical system, and attachments.
The DX140LC is a track excavator designed for various earthmoving and construction tasks. Its primary function involves digging, lifting, and moving materials using its boom, arm, and bucket attachments. The excavator utilizes a hydraulic system for its main operational movements, ensuring powerful and precise control. The swing reduction gear, a key component, facilitates the rotational movement of the upper structure, allowing the excavator to pivot and position its load effectively. This system employs a two-stage planetary gearbox with two planet gears, two sun gears, and a two-stage output reduction, where the planetary gear engages the ring gear. The pinion gear is connected to the output shaft and engine, and the final drive reduces swing motor RPM to increase swing motor output torque, providing a fast turning rate for efficient, rapid work cycling with more than adequate power for good acceleration.
The manual covers several models, including DX140LC, DX180LC, DX225LC, DX225NLC, DX255LC, DX300LC, and DX340LC, all with serial numbers 5001 and up. While specific detailed technical specifications like engine power, operating weight, or bucket capacity are not explicitly listed in the provided excerpts, the inclusion of sections on "Specifications" and "General Maintenance" implies that such details are present within the full manual. The "Table of Contents" indicates sections for "Specification for DX140LC" (SP001313) and "Standard Torques" (SP000813), which would contain crucial technical data.
The swing reduction gear assembly, as depicted in the "Reassembly" section, consists of numerous components, including:
These components are critical for the excavator's rotational functionality.
The DX140LC is designed for safe and efficient operation. The manual emphasizes safety precautions, including following safety recommendations, using appropriate tools and equipment, and proper lifting and hoisting techniques. It also highlights the importance of understanding and adhering to safety labels and warnings on the machine. The "TO THE OPERATOR OF A EXCAVATOR" section outlines critical safety information, such as avoiding misuse that could lead to serious injury or death, and the importance of proper operating procedures, maintenance, and shipping methods. The manual stresses that only trained and authorized personnel should operate and maintain the machine.
Key operational areas covered in the table of contents include:
These sections provide detailed instructions for operating and managing the various systems and components of the excavator.
Maintenance is a significant focus of the manual, with dedicated sections for "General Maintenance Procedures" and "Standard Torques." The manual stresses the importance of regular inspection and maintenance to ensure the machine's longevity and safe operation. It warns against improper operation and maintenance, which can lead to serious injury or death.
Specific maintenance procedures highlighted in the "Shrinkage Fitting of Shaft and Flexible Bearing" section for the swing reduction gear include:
The manual also emphasizes the importance of using DOOSAN-approved parts and following DOOSAN's regulations and standards for maintenance. It advises consulting a DOOSAN distributor before operating the machine if it has been purchased in another country or if there are any questions about whether the product complies with applicable standards.
The "Table of Contents" further indicates sections on "Fuel Tank," "Fuel Transfer Pump," "Swing Bearing," and various hydraulic components, all of which would contain detailed maintenance instructions. The presence of "Hydraulic System Troubleshooting, Testing and Adjustment" suggests comprehensive guidance for diagnosing and resolving hydraulic issues.
General| Brand | Daewoo |
|---|---|
| Model | Doosan DX140LC |
| Category | Excavators |
| Language | English |
