INSTALLATION OF THE HYDRAULIC UNIT for the underwaterhatches type:001013 page 9

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DISCUSSION OF THE HYDRAULICS. There are three flexible hoses to connect to the unit. De connection "A3", the larger one of them, is visible on the picture. This connection has the sole purpose to use as a fill connection for the cilinder. THE HOSES HAVE TO BE PROPERLY CONNECTED BEFORE FILLING THE UNIT.