裝載機液壓系統是裝載機配件中比較重要的一個配件，一旦出現問題就會導致整個裝載機無法工作，常見的一種的問題是液壓系統泄漏。山東裝載機液壓系統的泄漏主要有兩種，一是固定不動部位密封的泄漏；二是滑動部位密封的泄漏，亦可分為內泄漏和外泄漏。內泄漏主要產生在液壓閥、液壓泵及液壓缸內部油液從高壓腔流向低壓腔；外泄漏主要產生在液壓系統的液壓管路、液壓閥、液壓缸和液壓泵的外部，即向零部件的外面滲漏。具體表現為管接頭、密封件、元件接合面、殼體及系統自身原因而引起的油液泄漏。
Shandong Loader Parts Loader hydraulic system is one of the more important parts, if there are problems it will cause the entire loader does not work, a common problem is that the hydraulic system leak. Shandong loader hydraulic system

leak there are two, one is fixed and sealed the leak site; the second is a sliding seal leakage sites, may be divided into internal leakage and external leakage. Is mainly produced in the leakage of hydraulic valves, hydraulic pumps,and hydraulic fluid inside the cylinder from the high pressure chamber of the low pressure chamber; external leakage mainly produced in the external hydraulic lines of the hydraulic system, hydraulic valves, hydraulic cylinders and hydraulic pumps, namely parts the outside of the leak. Specific performance fittings, seals, component joints, oil leak case and caused the system for their own reasons.
 
裝載機液壓系統的泄漏一般都是在使用一段時間后產生。從表面現象看，多為密封件失效、損壞、擠出，或密封表面被拉傷等造成。主要原因有：油液污染、密封表面粗糙度不當、密封溝槽不合格，管接頭松動、配合件間隙增大、油溫過高、密封圈變質或裝配不良等。
Shandong loader hydraulic system leaks are generally in use for some time to produce. From appearances, the seal failure, damage, extrusion, or sealing surface is mostly caused by strain. Main reasons: oil pollution, improper sealing

surface roughness, seal grooves failed, loose fittings, with pieces gap increases, the oil temperature is too high, bad seal deterioration or assembly.