A mounting tool arranged at an elevator car raisable and lowerable along guide rails by a hoist in an elevator shaft. The hoist is suspended at a load hook of a shaft ceiling, wherein a support cable is connected with a load eye of a car yoke. The mounting tool includes a pivot support pivotally arranged at an axle of a tool foot supported by the car yoke. A load carrier carrying an elevator drive is provided at a free end of the pivot support. An assembly operative standing on the car yoke operates the hoist and the mounting tool.