④先导阀(锥阀)与阀座配合面之间因污物滞留而接触不良,不密合;或先导锥阀有严重划伤,阀座配合孑L失圆,有缺口,造成先导阀芯与阀座孔不密合。
⑤拆修时,漏装锥阀或锥阀未安装在阀座孔内。对此,可检查锥阀的装配情况或密合情况。
⑥主阀芯上长阻尼孔被污物堵塞,如图3-21所示,P2腔的油液不能经长阻尼孔e流入主阀弹簧腔,出油腔P2的反馈压力传递不到先导锥阀上,使导阀失去了对主阀出口压力的调节作用。阻尼孔堵塞后,主阀P。腔失去了油压p3的作用,使主阀变成一个弹簧力很弱(只有主阀平衡弹簧)的直动式滑阀,故在出油口压力很低时,便可克服平衡弹簧的作用力而使减压阀节流口关小ymin,这样进油口压力p1经ymin节流口大幅度降压至p2,使出油口压力上不来。应使长阻尼孔通畅。
055)PV2R1-6-F-RAA-4222 PV2R1-6-F-LAA-4222
(056)PV2R1-6-F-RAB-4222 PV2R1-8-F-RAA-4222
(057)PV2R1-8-F-LAA-4222 PV2R1-8-F-RAB-4222
(058)PV2R1-8-F-LAB-4222 PV2R1-8-L-LAA-4222
(059)PV2R1-8-L-RAB-4222 PV2R1-8-L-LAB-4222
(060)PV2R1-8-L-RAA-4222 PV2R1-8-L-LAB-4222
(061)PV2R1-8-F-LAB-4222
苏州登正机电有限公司专业销售进口油研YUKEN液压阀 液压泵全系列
油研YUKEN叶片泵 原装,质量保证,油研YUKEN江苏办事处 油研YUKEN
(024)PV2R1-10-L-RAA-4222 PV2R1-10-L-LAA-4222 PV2R1-10-L-RAB-4222
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(026)PV2R1-10-F-LAA-4222 PV2R1-10-F-RAB-4222 PV2R1-12-L-RAA-4222
(027)PV2R1-12-L-LAA-4222 PV2R1-12-L-RAB-4222 PV2R1-12-L-LAB-4222
(028)PV2R1-12-F-RAA-4222 PV2R1-12-F-LAA-4222 PV2R1-12-F-RAB-4222
(029)PV2R1-12-F-LAB-4222 PV2R1-14-L-RAA-4222 PV2R1-14-L-LAA-4222
(030)PV2R1-14-L-RAB-4222 PV2R1-14-L-LAB-4222 PV2R1-14-F-RAA-4222
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(035)PV2R1-19-L-LAA-4222 PV2R1-19-L-RAB-4222 PV2R1-19-L-LAB-4222
(036)PV2R1-19-F-RAA-4222 PV2R1-19-F-LAA-4222 PV2R1-19-F-RAB-4222
(037)PV2R1-19-F-LAB-4222 PV2R1-23-L-RAA-4222 PV2R1-23-L-LAA-4222
(038)PV2R1-23-L-RAB-4222 PV2R1-23-L-LAB-4222 PV2R1-23-F-RAA-4222
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(040)PV2R1-25-L-RAA-4222 PV2R1-25-L-LAA-4222 PV2R1-25-L-RAB-4222