The 109665 Swing Sequence Valve Kit is a complete, high-quality hydraulic repair kit specially engineered for the swing sequence valve system found in Case 580 Super K and Case 580 K Series 3 backhoe loaders.
This kit includes all essential replacement components required to restore proper hydraulic flow, timing, and synchronization in the swing mechanism. Over time, the swing sequence valve may experience internal leakage, weak seals, delayed response, or unbalanced left-right swing movement — all of which reduce operating efficiency and can cause safety risks during excavation work.
The 109665 kit provides a full restoration solution, ensuring the swing system performs smoothly, consistently, and safely.
Key Features & Benefits
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Restores Left–Right Swing Balance
Ensures the backhoe boom swings evenly without hesitation or jerking. -
Improves Hydraulic Response Time
Eliminates slow, delayed, or uneven swing movement caused by worn seals and internal leakage. -
Prevents Pressure Loss
Helps maintain stable hydraulic pressure within the swing sequence valve. -
Reduces Wear on Swing Cylinders & Pump
By ensuring proper hydraulic flow, the kit helps extend the life of downstream components. -
OEM-Standard Fit
Designed to match original Case specifications for easy installation and reliable sealing.
Functions of the Swing Sequence Valve
The swing sequence valve controls the timing and flow of hydraulic oil to the swing cylinders, coordinating the left and right movement. A properly functioning valve ensures:
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Smooth deceleration at end of swing
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Synchronized cylinder reaction
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Accurate operator control
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Reduction of machine vibration
When the valve is worn, operators may notice drifting, uneven swing, weak swing power, or delayed response — all of which this kit is designed to resolve.
Compatible Models
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Case 580 Super K
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Case 580 K Series 3
Applications
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Swing Sequence Valve Overhaul
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Hydraulic Swing System Maintenance
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Repair of Uneven or Slow Swinging Movement
109665 摇摆顺序阀套件是一套专为 Case 580 Super K 和 Case 580 K Series 3 挖掘机而设计的高品质液压维修套件，用于修复“摇摆顺序阀”系统内部的密封、流量与同步问题。
随着机器使用时间增加，摇摆顺序阀可能出现内部泄压、密封老化、左右摆动不平衡、反应迟缓等情况，导致挖掘机在作业时摇摆动作越来越不顺畅，甚至影响安全与效率。
此套件包含所有必要零件，可完整恢复液压系统的顺畅度与稳定性。
主要功能与优点
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恢复左右摆动平衡
让挖掘臂左右摆动更顺畅，不再出现卡顿或不均匀现象。 -
提升液压反应速度
改善因内部泄漏导致的摆动动作迟缓、动力不足。 -
防止液压压力流失
维持摇摆顺序阀的稳定压力，提升作业安全。 -
减少摆动油缸与主泵磨损
液压流量恢复正常，可延长相关组件寿命。 -
OEM 标准制造
完美符合原装 Case 规格，安装容易，密封可靠。
摇摆顺序阀的作用
摇摆顺序阀负责控制左右摆动油缸的油量与时间，使机器在摆动时：
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持续平顺
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末端自动减速
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控制精准
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减少震动与冲击
若阀体磨损，常见问题包括左右摆动不均、缓慢、无力、漂移等。此套件可有效解决以上故障。
适用机型
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Case 580 Super K
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Case 580 K Series 3
适用范围
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摇摆顺序阀总成维修
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液压摇摆系统保养
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摆动迟缓 / 不平衡问题修复
