机体预装线采用工作台、专用夹具和专机操作，主要完成活塞、连杆、活塞销及活塞环的装配以及
活塞连杆称重分组等工作。设备主要包括：电磁感应加热器、活塞销压装机、活塞环装配机、连杆称重打标设备等。

It adopts workbench, clamp and special machines. It mainlyassembles piston, connecting rod, piston pin and pistonring.Meanwhile,it checks orientations of piston, connectingrod and piston ring, heating time of equipment and settingof temperature. The graphic expression shows that theinterference fit of piston pin and connecting rod is heat pressassembly type.