４９０柴油机飞轮螺栓松动的检查方法飞轮螺栓松动后，发动机工作会发出“哒哒”的敲击声，有些机手认为是曲柄连杆机构松旷或配气机构不协调造成的，因此就大拆大卸，结果毛病尚找不到，装复后仍然发响。本人在修理时遇到发动机有象“敲缸”一样的响声时，不是急于大拆大... 490 Diesel flywheel bolts loosening check flywheel bolts loose, the engine will issue a “da da” percussion sound, some of the hand crank mechanism that is loose or unbalanced gas distribution agencies, and therefore on the big demolition Large unloading, the results still can not find the problems, after the installation is still ringing. When I encountered the engine repair as a “knock cylinder” the same sound, not eager to large demolition large ...