发动机飞轮壳密封
engine flywheel housing seal
飞轮壳安装面
flywheel housing mounting face
飞轮壳标记
flywheel housing reference
飞轮壳表面偏摆
flywheel housing face runout
飞轮壳表面偏摆检查
flywheel housing face runout check
飞轮壳定时标记
flywheel housing timing mark
flywheel housing timing pointer
飞轮壳定时标记检视孔
flywheel housing timing hole
飞轮壳放油管
flywheel housing drain line
飞轮壳护罩组件
flywheel housing cover group
飞轮壳回油齿轮泵
flywheel housing scavenge gear pump