(2)油缸与活塞卡死,液压油太脏,拉伤活塞与缸壁;或活塞与缸套合作空隙太小,作业时间较长,温度较高,活塞胀死在缸套里。确诊办法是:在油泵正常作业时,松开油泵与油缸之间的油管接头,可发现有高压油喷出,但外提高臂无提高动作。扫除办法是:分化油缸。假如油缸与活塞损害严峻,应替换新件;假如拉伤较轻,可用细砂布把拉伤处抛光,重新装置运用。***BOSCHREXROTH齿轮泵0510系列BOSCHREXROTH齿轮泵技术参数：通径：4-22***高压力：250bar公称容积：4.1cm3-22.9cm3/t温度范围：-15C°至+80°C适用介质：矿物油HFC-,HFD,HETG,HEPG-和HEES粘度范围：12-800mm2/S（推荐20-100mm2/S）***高转速：2500-4000min3-10510525324AZPF-12-011LRR20MB0510625013AZPF-10-019RCB20MB0510425009AZPF-10-008RCB20MBR918PT0550AZPS-22-022RPR20MBR918C03771AZPS-11-008RCB20MBR918C02883AZPGF-11-038/004RCB2020MBR918C02771AZPGG-12-028/028LDC2020MBR918C02740AZPNF-11-032/014LDC0720KB-S0023R918C02614AZPNF-11-022/008RDC720KB-S0023R918C02598AZPNN-11-025/022RDC77KB-S0023R918C02594AZPNF-11-032/016RDC720KB-S0023R918C02591AZPNF-11-032/008RDC720KB-S0023R918C02478AZPF-10-022RSG20PB-S0012)