Abstract: A mechanical system having a casing delimiting an internal volume containing oil. The mechanical system comprises a sampling device for sampling at least part of the oil. The sampling device comprises at least one pipework integral with the casing, the pipework extending from an inner end located in the internal volume to a neck comprising an outer end open to an external environment located outside the mechanical system. The sampling device comprises a closure that can be operated by an operator to close off the neck. The sampling device comprises, in the neck, a pollution barrier providing a restricted passage through which a sampling pipe can pass.

Abstract: A lubrication system for a mechanical system, the lubrication system comprising a main tank, a reserve tank and a main lubrication circuit. The main lubrication circuit comprises, in particular, a pump drawing in the lubricating liquid from the main tank via a main suction point and a main suction pipe connecting the main suction point to the pump. The reserve tank is supplied with lubricating liquid either directly from the main tank or via the main lubrication circuit. The reserve tank is connected to the main suction pipe via an outlet pipe and the reserve tank is located above the main suction point so that the lubricating liquid flows through the outlet pipe to the main suction pipe by gravity.

Abstract: A lubrication system for a mechanical system, the lubrication system comprising a main tank, a reserve tank and a main lubrication circuit. The main lubrication circuit comprises, in particular, a pump drawing in the lubricating liquid from the main tank via a main suction point and a main suction pipe connecting the main suction point to the pump. The reserve tank is supplied with lubricating liquid either directly from the main tank or via the main lubrication circuit. The reserve tank is connected to the main suction pipe via an outlet pipe and the reserve tank is located above the main suction point so that the lubricating liquid flows through the outlet pipe to the main suction pipe by gravity.