brake adjustment bolt 制动器调整螺栓

drag adjustment bolt 牵引杆调整螺栓

speeder spring adjustment bolt 增速器弹簧调整螺栓

side thrust adjustment bolt 侧向止推调整螺栓

tension adjustment bolt 张力调节螺栓

overspeed setting adjustment bolt 超速设定调节螺栓

GAP ADJUSTMENT BOLT 调整螺栓

spring adjustment bolt 弹簧调整螺栓

engine adjustment bolt 发动机螺栓