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此项工作要求特别的耐心¾l†è‡´åQŒè¦å½Õdº•æ¸…除密封表面的旧密封胶、积炭及腐蚀生成物,òq¶ç”¨åŽ‹ç¾ƒ½Iºæ°”吹干净ã€?br /> 挖掘机气¾~¸åž«çš„更换操作方æ³?br /> (3)‹‚€æŸ¥æŒ–掘机气çŽ×盖与挖掘机气¾~怽“密封表面有无变åŞã€?br /> 用直ž®ºå’ŒåŽšè–„规沿着密封表面的纵向和横向分别‹‚€æŸ¥ï¼Œä¸€èˆ¬è¦æ±‚在挖掘机气¾~怽“与挖掘机气çŽ×盖的密封面全长上不åã^度不大于0åQ?0mmåQŒåœ¨ä»ÖM½•100mm的长度上不åã^度不大于0åQ?3mmåQŒåœ¨å¯†å°é¢ä¸Šä¸èƒ½æœ‰ä“Q何的凸è“v或凹陷部位。检查çŽ×套上端面高于挖掘机气¾~怽“上åã^面的高度åQŒè¦åœ¨è§„定的0åQ?5ï½?åQ?5mm范围内ã€?br /> 挖掘机气¾~¸åž«çš„更换操作方æ³?br /> (4)选用的挖掘机气çŽ×垫必™åÀL˜¯½W¦åˆè¦æ±‚、质量可靠的原厂配äšg<br /> 安装时要注意其安装方向,基本原则是卷è¾ÒŽœå‘易修整的接触面或硬òq³é¢ã€?br /> ①如果挖掘机气çŽ×垫本íw«æœ‰å®‰è£…标志åQŒåˆ™æŒ‰å®‰è£…标志进行安装ã€?br /> ②无标志åQŒçŽ×盖äؓ铔R“åQŒå·è¾ÒŽœå‘çŽ×盖,¾~¸ç›–为铸铝时åQŒå·è¾¹è¦æœå‘¾~怽“åQŒå½“¾~¸ç›–¾~怽“均äؓ铔R“æ—Óž¼Œå¯‚¾¹æœå‘湿式¾~¸å¥—的凸æ²Ñ€?br /> 挖掘机气¾~¸åž«çš„更换操作方æ³?br /> (5)¾~¸ç›–螺栓的紧固方法:<br /> ¾~¸ç›–螺栓的紧固是保证挖掘机气¾~¸åž«å¯†å°è´¨é‡çš„重要的一环,此项操作的规范与否,直接影响挖掘机气¾~¸åž«çš„密ž®è´¨é‡ï¼Œå¿…须严格按照技术标准进行操作,同时有一些细节问题必™åÕdŠ ä»¥æ³¨æ„ï¼š<br /> ①要å½Õdº•æ¸…理螺栓孔内的污泥、积炭、冷却液、机油等杂物和液体,必要时用丝锥清理螺纹åQŒåƈ用压¾~©ç©ºæ°”吹òq²å‡€ã€?br /> ②彻底清‹zçŽ×盖螺栓,认真‹‚€æŸ¥èžºæ “,如果有裂¾UV€ç‚¹èš€åŠé¢ˆ¾~©çŽ°è±¡å°±åº”报废不能ç‘ô¾l­ä‹É用。用卡尺‹¹‹é‡èžºæ “在自ç”ÞqŠ¶æ€ä¸‹çš„长度,如果螺栓的塑性变形量­‘…过1åQ?åQ…就不能再ç‘ô¾l­ä‹É用。还有一些发动机生äñ”厂在拧紧¾~¸ç›–螺栓时是ž®†èžºæ “扭紧到材料的屈服点åQŒç”¨˜q™ç§æ–ÒŽ³•å¯ä»¥åœ¨çŽ×盖上形成更äؓ一致的夹紧力,以保证挖掘机气çŽ×垫的可靠密封。因此这¿Uèžºæ “是按照仅ä‹É用一‹Æ¡çš„标准设计的,拆卸后必™åÀL›´æ¢ã€‚如果ä‹É用旧螺栓åQŒå†‹Æ¡æ‰­ç´§åˆ°ææ–™çš„屈服点åQŒå°±ä¼šäñ”生薄å¼Þq‚¹åQŒé€ æˆæŒ–掘机气¾~¸åž«å¯†å°å¤±æ•ˆã€?br /> ③çŽ×盖螺栓在安装前要在螺¾Ušwƒ¨åˆ†åŠæ³•å…°æ”¯æ’‘面处涂少许机油,以减轻螺¾U¹å‰¯å¤„çš„òq²æ‘©æ“¦ã€?br /> ④对于分体式¾~¸ç›–åQŒåœ¨ç´§å›º¾~¸ç›–螺栓前要ž®†åˆ†æ°´ç®¡åŠè¿›æ°”管安装到çŽ×盖上(不装垫片)åQŒåƈ按规定的力矩紧固åQŒå¦åˆ™å¯èƒ½ä¼šç”׃ºŽ¾~¸ç›–侧面不在同一òq³é¢ä¸Šè€Œå‘生漏水或漏气的故障ã€?br /> ⑤按技术规范紧固çŽ×盖螺栓。各¿Uä¸åŒçš„发动机çŽ×盖螺栓的紧固æ–ÒŽ³•åŠåŠ›çŸ©æ˜¯ä¸åŒçš„,æ€Èš„原则是应从中间向两侧对称地扩展交叉进行,åˆ?ï½?‹Æ¡æ‰­ç´§è‡³è§„定扭矩åQŒåœ¨å‘动机热车时再重复紧固ã€?br /> ⑥由于材料膨胀¾pÀL•°çš„不同,ä¸ÞZº†é˜²æ­¢å—热后çŽ×盖螺栓的膨胀大于铔R“¾~¸ç›–的膨胀而ä‹É压紧度降低,对于铔R“¾~¸ç›–要在发动æœø™¾¾åˆ°æ­£å¸¸å·¥ä½œæ¸©åº¦æ—¶å†è¿›è¡Œç¬¬2‹Æ¡æ‰­ç´§ï¼Œé“åˆé‡‘çŽ×盖由于其膨胀¾pÀL•°å¤§äºŽé’¢ï¼Œæ‰€ä»¥åœ¨å‘动机热起后åQŒåŽ‹ç´§åŠ›ä¼šæ›´å¤§ï¼Œæ•…只需在冷态下一‹Æ¡æ‰­ç´§å³å¯ã€‚挖掘机¾l´ä¿®24ž®æ—¶ä¿®ç†çƒ­çº¿åQ?5223463988åQŒæŽå¸ˆå‚…为您解答éšùN¢˜åQ?br /> <div> <br /> </div> <br /></p><br /> </div> <div class="newArtiNext mt10"><div>上一æ?<a href="408.html">挖掘机气¾~¸ç£¨æŸçš„故障诊断与排é™?/a></div> <div>下一æ?<a href="406.html">挖掘机机友们——液压æÑa滤芯你了解吗åQ?/a></div> </div> <div class="tag">相关标签åQ?a href="/download/">挖掘机维ä¿?/a>,<a href="/news/wjjwx">挖掘æœÞZ¿®ç?/a>,<a href="/about/about5.html">挖掘机维修厂</a></div> <div class="crumb mt15"> <span class="fl font_w fb fs22">相关新闻<b class="fs14 fn font_i ml5">RELATED NEWS</b></span> </div> <div class="insNews1 clearfix pt10 fs14 font_w"> <ul> <li><a href="/news/410.html" rel="nofollow" >怎样防止挖机自燃åQŸå‡¯æ–¯æŒ–掘机自燃的原因?</a><span>2022-04-14</span></li> <li><a href="/news/409.html" rel="nofollow" > 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