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4.缸套的拆装 缸套的合理安装是提高发动机修理质量的一个重要因素。往往因缸套安装不当而造成早期磨损、拉缸、排油冒烟、漏水、烧缸垫,有时甚至造成压断缸套,压裂缸套安装孔凸缘等事故性损坏。 (1)湿式缸套的拆装 a.气缸套的拆卸 取下气缸套的常用工具如图23所示,使用方法是:发动机平稳放置,工具辅件完整灵活。抽出托板销子,取下托板,把起出器支架平整地放在发动机机体平面上,将螺旋杆穿过气缸套,然后装好托板并用托板销子联接。使托板两个肩部准确地抵住缸套底部,先轻轻扳转螺杆的扳手,当手有受力感觉时即停,使托板与气缸套接触可靠时再用力扳转手柄将气缸套取出。在取出过程中可以用木锤在气缸套底边敲击,以帮助缸套移动。如果没有专用工具,可以把机体倒立架空,在气缸套下端平面上放一块木头,用铁棍通过木头将缸套镦下。
4 cylinder liner disassembly Reasonable installation of cylinder liner is to improve the quality of engine repair is an important factor. Often due to improper installation of cylinder liner caused by early wear and tear, pulling cylinder, exhaust smoke, water leakage, burning cylinder pad, and sometimes even caused by broken cylinder liner, flange and other fracturing cylinder flange installation accidental damage. (1) Removal and Installation of Wet Cylinder Liner a. Removal of Cylinder Liner The commonly used tools for removing the cylinder liner are shown in Figure 23. The method of use is that the engine is placed smoothly and the tool accessories are fully and flexibly used. Remove the pallet pins, remove the pallet, put the ejector bracket flat on the plane of the engine body, pass the spiral rod through the cylinder liner, and then install the pallet and couple with the pallet pins. So that the two shoulders pallet accurately against the bottom of the cylinder liner, gently pull the screw to turn the wrench, when the hands feel the force that is stopped, the pallet and the cylinder liner contact reliable and then pull the handle force the cylinder Remove the cover. In the removal process can be used wooden hammer in the bottom edge of cylinder liner percussion, to help move liner. If you do not have special tools, you can put the body upside down, put a piece of wood in the plane of the lower end of the cylinder liner, and use the iron rod to upset the cylinder liner through wood.