?液壓油一般可根據(jù)實(shí)際使用情況定期更換，一般使用兩年左右需更換一次；如需更換時(shí)應(yīng)先將液壓油加入新油中充分?jǐn)嚢?，然后注入新油加滿油箱并加滿液壓油，最后打開氣閥將液壓油抽出，然后用清水沖洗油箱加油口，再將新?lián)Q的液壓油加入油箱并加滿液壓油。
若使用長(zhǎng)時(shí)間不更換液壓油則會(huì)使油質(zhì)變質(zhì)，造成機(jī)器部件生銹、腐蝕、結(jié)垢、吸氫氣體等破壞失效形式，嚴(yán)重時(shí)還會(huì)引起泵管、葉片等部件早期磨損失效現(xiàn)象因此液壓油要根據(jù)使用情況及時(shí)更換每?jī)赡旮鼡Q一次液壓油為宜；長(zhǎng)期使用液壓油粘度較低，且不易清除油污、臟物；而且對(duì)機(jī)械零件有腐蝕作用；如不能及時(shí)地將液壓油送回油箱或更換發(fā)動(dòng)機(jī)潤(rùn)滑系統(tǒng)中的易損件和部件；當(dāng)液壓油粘度達(dá)到規(guī)定值時(shí)，就會(huì)發(fā)生潤(rùn)滑不良或堵塞現(xiàn)象。
此時(shí)應(yīng)將液壓油過濾干凈以便繼續(xù)使用使用超過2年后應(yīng)重新加回油箱原牌號(hào)的液壓液若更換液壓油后仍不能將液壓液完全排出，也要重新加注新油，直至泵的運(yùn)轉(zhuǎn)平穩(wěn)為止 安裝前應(yīng)檢查泵缸是否彎曲變形、活塞是否與缸體有間隙。
用手將活塞推動(dòng)，若間隙過大，應(yīng)立即調(diào)整活塞在缸體內(nèi)不得有擺動(dòng)活塞與缸體或缸套之間的密封圈應(yīng)具有良好的密封性能應(yīng)定期檢查冷卻水是否正常，并及時(shí)清除油底殼內(nèi)液壓油中的水分和污物等冷卻水應(yīng)該有足夠數(shù)量、溫度和壓力，以保持其質(zhì)量，并且冷卻水必須有一定長(zhǎng)度的流動(dòng)范圍和壓力。
檢查液壓油是否缺少，并及時(shí)添加，以免發(fā)生液壓回路損壞或油泵漏油而損壞設(shè)備；清洗泵前的工作油缸、檢查并更換泵頭或閥體、安裝閥芯必要時(shí)更換密封圈，但其間隙不應(yīng)超過額定間隙；若磨損嚴(yán)重而達(dá)不到規(guī)定要求時(shí)及時(shí)更換。
90R180-KA-5-NN-80-T-C-C8-J-09-NNN-35-35-28 90R180KA5NN80TCC8J09NNN353528 90-R-180-KA-5-NN-80-T-C-C8-J-09-NNN-35-35-28 90R180KA5NN80TCC8J09NNN353528 90R180-KA-5-NN-80-T-C-F1-H-00-FAC-23-23-28 90R180KA5NN80TCF1H00FAC232328 90-R-180-KA-5-NN-80-T-C-F1-H-00-FAC-23-23-28 90R180KA5NN80TCF1H00FAC232328 90R180-KA-5-NN-80-T-C-F1-J-03-FAC-20-20-22 90R180KA5NN80TCF1J03FAC202022 90-R-180-KA-5-NN-80-T-C-F1-J-03-FAC-20-20-22 90R180KA5NN80TCF1J03FAC202022 90R180-KA-5-NN-80-T-C-F1-J-03-FAC-35-35-22 90R180KA5NN80TCF1J03FAC353522 90-R-180-KA-5-NN-80-T-C-F1-J-03-FAC-35-35-22 90R180KA5NN80TCF1J03FAC353522 90R180-KA-5-NN-80-T-C-F1-J-05-FAC-20-20-24 90R180KA5NN80TCF1J05FAC202024 90-R-180-KA-5-NN-80-T-C-F1-J-05-FAC-20-20-24 90R180KA5NN80TCF1J05FAC202024 90R180-KA-5-NN-80-T-M-C8-H-03-NNN-20-20-26 90R180KA5NN80TMC8H03NNN202026 90-R-180-KA-5-NN-80-T-M-C8-H-03-NNN-20-20-26 90R180KA5NN80TMC8H03NNN202026 90R180-KA-5-NN-80-T-M-C8-H-03-NNN-26-26-24 90R180KA5NN80TMC8H03NNN262624 90-R-180-KA-5-NN-80-T-M-C8-H-03-NNN-26-26-24 90R180KA5NN80TMC8H03NNN262624 90R180-KA-5-NN-80-T-M-C8-J-03-NNN-32-32-24 90R180KA5NN80TMC8J03NNN323224 90-R-180-KA-5-NN-80-T-M-C8-J-03-NNN-32-32-24 90R180KA5NN80TMC8J03NNN323224 90R180-KA-5-NN-80-T-M-C8-J-03-NNN-35-35-30 90R180KA5NN80TMC8J03NNN353530 90-R-180-KA-5-NN-80-T-M-C8-J-03-NNN-35-35-30 90R180KA5NN80TMC8J03NNN353530 90R180-KA-5-NN-80-T-M-C8-J-03-NNN-42-42-24 90R180KA5NN80TMC8J03NNN424224 90-R-180-KA-5-NN-80-T-M-C8-J-03-NNN-42-42-24 90R180KA5NN80TMC8J03NNN424224 90R180-KA-5-NN-80-T-M-F1-H-03-FAC-23-23-24 90R180KA5NN80TMF1H03FAC232324 90-R-180-KA-5-NN-80-T-M-F1-H-03-FAC-23-23-24 90R180KA5NN80TMF1H03FAC232324 90R180-KA-5-NN-80-T-M-F1-J-03-FAC-20-20-22 90R180KA5NN80TMF1J03FAC202022 90-R-180-KA-5-NN-80-T-M-F1-J-03-FAC-20-20-22 90R180KA5NN80TMF1J03FAC202022 90R180-KA-5-NN-80-T-M-F1-J-03-NNN-38-38-24 90R180KA5NN80TMF1J03NNN383824 90-R-180-KA-5-NN-80-T-M-F1-J-03-NNN-38-38-24 90R180KA5NN80TMF1J03NNN383824 90R180-KA-5-NN-80-T-M-F1-J-05-NNN-38-38-24 90R180KA5NN80TMF1J05NNN383824 90-R-180-KA-5-NN-80-T-M-F1-J-05-NNN-38-38-24 90R180KA5NN80TMF1J05NNN383824。
