(3)声音和振动判断。若整个液压系统有较大的、断续的噪声和振动，同时主泵发出“嗡嗡”的响声，甚至出现活塞爬行现象，这时观察油箱液面、油管出口或透明液位计，会发现有大量的泡沫。这说明液压油中已***了大量的空气。(4)加温检测。对于黏度较低的液压油，可直接放入洁净、干燥的试管中加热升温。若发现试管中油液出现沉淀或悬浮物，则说明油液中已含有机械杂质。R918C02246AZPG-11-032RQ***0MBR918C02215AZPN-11-025RCB20MBR918C02200AZPF-12-022RCB20KBR918C02184AZPG-11-045RCB20MBR918C02178AZPG-11-028RCB20MBR918C01919AZPFF-12-016/004LCP2020KB-S0007R918C01897AZPFF-12-016/016LCP2020KB-S0007R918C01895AZPFF-12-016/008LCP2020KB-S0007R918C01703AZPFF-10-016/005RCB2020MB德国博世REXROTH力士乐齿轮泵:质量保证，货期稳定德国原厂出售Rexroth力士乐齿轮泵产品别名：力士乐齿轮泵面向地区：***PGH3-22/016RE07VU2力士乐齿轮泵0510225006现货051011000205106653300510425009PGH3-22/016RE07VU2051052531105101103020510525009PV2R1-25-F-RAA-43DBW30B2-5X/100-6EW230N9K4PGH3-22/016RE07VU2PGH3-22/016RE07VU2PGH3-22/016RE07VU2)