放下锤子和螺丝刀，将套筒扳手放到螺母上拧动。
Put down the hammer and screwdriver, and place the socket over the nut and turn.
拆卸一个灯头钉头螺丝，三个套筒头螺栓和齿轮执行机构盖。
Remove one socket pin head screw, three socket head bolts and gear operator cover.
拆卸一个灯头钉头螺丝，三个套筒头螺栓和齿轮执行机构盖。
Remove one socket pin head screw, three socket head bolts and gear operator cover.
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