When we dismantled this old equipment, the rust-covered casing and severely aged components were starkly visible, seemingly declaring that the industrial life of this machine had reached its end. However, we did not give up. The team replaced aged components with localized alternatives, re-optimized the pipeline layout, rectified the oil system, and repaired structural defects in the complete machine. Simultaneously, we debugged pressure conditions, optimized noise reduction, and restored the core performance of the equipment. After systematic precision repair and technical transformation, all performance indicators of this forty-year-old equipment were fully restored. With stable and safe operating conditions, it has now been successfully shipped back to resume production service.