卡特液压挖掘机润滑系统主要部件清洗要点有哪些?

2025-04-07 14:36:36
推荐回答(1个)
回答1:

液压挖掘机润滑系统主要部件清洗要点,详细讲解:
1、离心式机油细滤器清洗
先拆下滤清器盖,取出转子,取出时应防止转子下面的推力轴承座圈被机油粘住带出丢失或经底座孔掉人机油盘内。打开转子盖,清洗转子盖内壁上的沉积物,洗净转子,疏通喷嘴。装复时,转子体与转子盖上的箭头记号要对准,以免破坏平衡。橡胶衬垫应装好,用手拧紧锁管螺母,转子总成上端有弹簧和止推垫片,下端有推力轴承和座圈,不得漏装或装错,否则不能正常转动,还可能损坏转子。转子正常工作时,发动机熄火2~3min内,在发动机罩旁应能听见轻微"嗡嗡"声,否则应拆下检查并排除故障。
2、机油散热器的清洗。
清洗时只需清除管内外积垢,但注意不能损伤焊接处,以免造成渗漏。安装时,应使油封圈保持平衡和位置正确,老化或发粘了的密封圈应换新,否则会造成油水混合。
保养时还要检查散热器芯子是否有脱焊、烂穿,必要时可进行焊补,或把个别芯子闷死再继续使用,如果铜管磨损较多,应更换整个芯子。在寒冷地区或冬季,应注意停车后放掉冷却液,还应放掉机油散热器中的冷却液,或采用防冻液,以防散热器冻坏。
3、转子式机油泵清洗。
机油泵盖与泵体端面相接触的一面应当光滑平整,如果有轻微刮伤、划痕,应用细砂纸打磨光;如果刮痕较深,则必须更换,否则将引起漏油,使机油压力降低。
机油泵使用一段时间后,应检查轴向间隙,即内、外转子与机油泵盖的端间隙;径向间隙是指内、外转子的啮合间隙。当轴向间隙超过磨损极限时(0.20mm),可通过增加机油泵体与机油泵盖之间的垫片来调整,使之符合规定(0.03-0.09mm)。当内、外转子径向间隙超过磨损极限时(0.22mm),应更换内、外转子,否则会造成机油压力降低,机油供给量减少。
如果内、外转子端面有轻微刮伤,可用油石打磨光;如果刮伤较深,则应更换。
机油泵重新装配后,用手转动机油泵轴,应转动灵活,无卡滞现象。

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