Remove the blanking plugs from the cabin recirculation fan (15), the sleeve (1) and from the check valve (7).

从客舱再循环风扇（15）上拆下堵盖、从单向活门上拆下衬套。

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Remove the blanking plugs from the cabin recirculation fan (15), the sleeve (1) and from the check valve (7).

从客舱再循环风扇（15）上拆下堵盖、从单向活门上拆下衬套。

youdao