원래 이름 기록: Liebherr-Werk Telfs GmbH

The disclosure relates to a mobile working machine, in particular a bulldozer or crawler loader, comprising a hydraulic system for providing a working function of the working machine, which comprises a hydraulic tank and at least one hydraulic pump, and an electric drive system with an electric motor for driving the hydraulic pump. According to the disclosure, the hydraulic pump is arranged inside the hydraulic tank and the electric motor is arranged on the outside of a housing of the hydraulic tank, wherein the electric motor is flange-mounted directly or via an intermediate piece on the housing and the hydraulic pump is attached to the electric motor or to the intermediate piece.