Changing The Rotation Ring Of The Huge Liebherr 984 Excavator - Labrianidis Mining Works

Описание: Changing the Swing Ring on the Massive Liebherr 984 Excavator: A Day of Precision and Power
In today’s video, we’re witnessing the complex process of replacing the swing ring on the Liebherr 984 excavator. This heavy-duty repair operation involves lifting and separating the excavator’s upper body from its lower chassis—a task that demands both power and precision. Supporting the operation, a Caterpillar 824G wheel dozer and a Terex AC 200-1 crane work together to make the process smooth and efficient. The entire crew’s organization and expertise are on full display as they complete the repair in just 8 hours, a testament to their skill and coordination.

The Importance of the Swing Ring

The swing ring is a critical component in any excavator, connecting the upper body to the lower body and enabling 360-degree rotation. This rotation allows the excavator to swing its arm in any direction, making it essential for efficient digging and loading operations. Over time, due to continuous heavy-duty work, the swing ring can wear out, requiring replacement to maintain the excavator’s functionality. Given the size and weight of the Liebherr 984, changing the swing ring is no small feat and requires careful planning and specialized equipment.

The Tools for the Job: Terex AC 200-1 Crane and Caterpillar 824G Wheel Dozer
For this repair operation, two powerful machines join forces to assist the crew: the Terex AC 200-1 crane and the Caterpillar 824G wheel dozer.

Terex AC 200-1 Crane: The Terex AC 200-1 is a mobile crane with a lifting capacity of up to 200 tons, making it ideal for handling the immense weight of the Liebherr 984’s upper body. Its telescopic boom provides the reach and stability required to carefully lift and separate the upper structure from the lower chassis, giving the crew access to the swing ring.

Caterpillar 824G Wheel Dozer: The Caterpillar 824G wheel dozer is a robust machine known for its pushing power and maneuverability. In this operation, the 824G provides essential support by clearing the work area, stabilizing the ground, and assisting in positioning the excavator for the repair. The dozer’s ability to navigate the site efficiently helps ensure that the crane and repair crew have a safe and stable environment to work in.

The Repair Process: Step-by-Step Precision

The process of replacing the swing ring begins with positioning the Liebherr 984 in an accessible spot, where the Caterpillar 824G wheel dozer helps create a stable and level base. With the work area prepared, the crew brings in the Terex AC 200-1 crane, which extends its boom and prepares to lift the upper structure of the excavator.

Lifting the Upper Body: The crane carefully lifts the upper body of the Liebherr 984, separating it from the lower chassis. This part of the operation requires precise control, as the upper section must be raised just enough to allow access to the swing ring without damaging any other components.

Removing the Old Swing Ring: Once the upper body is lifted and securely positioned, the crew removes the worn swing ring. This process requires attention to detail, as the team must disconnect the old ring carefully to prevent any misalignment when the new one is installed.

Installing the New Swing Ring: With the old swing ring removed, the crew installs the new swing ring, securing it in place and ensuring that all connections are aligned. This step is crucial, as any misalignment could affect the excavator’s ability to rotate smoothly.

Reassembly: After the new swing ring is installed, the crane gently lowers the upper body back onto the lower chassis. The crew then reattaches all necessary connections, ensuring that the Liebherr 984 is ready to operate.

A Well-Coordinated Crew Effort

The entire repair operation, completed in 8 hours, is a testament to the crew’s skill and organization. Each team member has a specific role, from operating the crane and dozer to handling tools and ensuring precise alignment.

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