德國(guó)FESTO費(fèi)斯托過(guò)濾器帶調(diào)壓閥
B72G2AKAE3RMNB73G3AKQD1RMNB72G-3AK-AE3-RMN**B74G4AKAD1RMN
B72G-2AK-AL1-RFGB73G-3AK-QD2-RMNB72G-3AK-AL1-NMNB74G4AKAD3RMG
B72G2AKAL1RFNB73G3AKQD3RFNB72G-3AK-AL3-RCGB74G4AKAD3RMN
B72G-2AK-AL1-RFNB73G-3AK-QD3-RMNB72G3AKAL3RMNB74G-4AK-AD3-RMN**
B72G-2AK-AL1-RMGB73G-3AK-QT3-RMNB72G-3AK-QD1-RFNB74G-4AK-AP3-RMG
B72G2AKAL1RMNB73G-3BK-AD1-RFNB72G-3AK-QD1-RMGB74G-4AK-AP3-RMN
維修師傅到達(dá)現(xiàn)場(chǎng)后仔細(xì)確認(rèn)了故障現(xiàn)象,發(fā)現(xiàn)工作時(shí)主泵產(chǎn)生異響,隨著工作時(shí)間的增加,異響越來(lái)越嚴(yán)重,并伴有不規(guī)則的“咔咔”聲,特別是每次回轉(zhuǎn)停止時(shí)明顯。根據(jù)故障問(wèn)題推測(cè)原因有以下幾點(diǎn):1、液壓油不足,造成液壓泵吸油不暢。2、液壓泵內(nèi)部零部件故障。3、液壓系統(tǒng)混入空氣,產(chǎn)生氣穴。故障排查1、首先將挖掘機(jī)的動(dòng)臂展平,通過(guò)液位計(jì)觀察液壓油在液
B72G-2AK-AL3-RCGB73G3BKAD1RMNB72G3AKQD1RMNB74G-4AK-QD1-RFN
B72G2AKAL3RMNB73G3BKAP3RMNB72G3AKQD3RFNB74G4AKQD1RMG
B72G-2AK-QD1-RFNB73G3BKQD1RFNB72G3AKQD3RMNB74G-4AK-QD1-RMN
B72G2AKQD1RFN **B73G3BKQD1RMNB72G3AKQE3RMNB74G-4AK-QD1-RMN**
B72G-2AK-QD1-RMNB73G-3BK-QD3-RFNB72G-3AK-QT1-RMNB74G-4AK-QD2-RMN
B72G2AKQD1RMN **B73G-3BK-QD3-RMNB72G3AKQT3RMNB74G-4AK-QD3-RFN
B72G-2AK-QD2-RMNB73G3GKAD1RMNB72G3AKQW3RMGB74G4AKQD3RMG
位計(jì)中線位置,排除了液壓油不足。2、通過(guò)壓力表測(cè)試主泵壓力,前后泵壓力均為334bar,先導(dǎo)壓力為40bar,因噪音來(lái)自主泵部位,考慮主泵內(nèi)部可能出現(xiàn)異?,F(xiàn)象,決定拆解液壓泵。3、由于拆解液壓泵需要放掉液壓油箱里的液壓油,當(dāng)打開(kāi)油箱蓋時(shí)發(fā)現(xiàn)液壓油呈乳白色,當(dāng)時(shí)維修師傅以為液壓油進(jìn)水被乳化了,后來(lái)經(jīng)過(guò)仔細(xì)觀察乳白液壓油內(nèi)含有大量氣泡,氣泡均勻分
德國(guó)FESTO費(fèi)斯托過(guò)濾器帶調(diào)壓閥