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发动机的曲轴连杆组件一般是不允许随意拆卸的,但如果连杆大头的滚针轴承过度磨损或损坏,或需要更换连杆时,则必须拆卸。由于曲柄与曲柄销是过盈配合,并且过盈量较大,因此拆卸时要用油压机将曲轴销压出销孔。组装曲轴时,则必须用专用工具,以保证曲轴两轴颈的同轴度达到要求。
Engine crankshaft connecting rod assembly is generally not allowed to disassemble, but if the connecting rod needle bearing excessive wear or damage, or need to replace the connecting rod, you must remove. Because the crank and crankpin are interference fit, and the amount of interference is large, so use a hydraulic press to remove the crank pin out of the pin hole. When assembling the crankshaft, you must use special tools to ensure that the coaxiality of the two crankshaft to meet the requirements.