Abstract: A method is provided for operating a supply system in which drive system components are supplied with lubricant and/or coolant. During normal operation of the drive system, an electrically powered feed pump is operated to deliver lubricant and/or coolant in the supply system to the drive system components. During a special operating mode, the electrically powered feed pump is switched off while the drive system is still operating so that at least some of the drive system components are supplied with lubricant and/or coolant only by a mechanically driven feed pump that is driven by a drive output of a motor vehicle drivetrain comprising the drive system. In this case, during operation, the mechanically driven feed pump only delivers a minimum quantity of lubricant and/or coolant that corresponds to a minimum demand required for supplying some of the components.

Abstract: A control unit (7) is configured for controlling electric oil pumps of at least one towed and switched-off vehicle (3.1, 3.2, 3.3). The control unit can be configured to transfer data between the electric oil pumps and the control unit and detecting a fault in one or more electric oil pumps.

Abstract: A shifting mechanism of a transmission gearset of a vehicle has an axially displaceable sliding sleeve for transmitting torque between shift partners to produce various gear-step transmission ratios. The sliding sleeve and the shift partners are in the form of gear-step gearwheels arranged coaxially with a rotation axis. The sliding sleeve has a first toothed section and a second toothed section for the transmission of torque between the shift partners. At least one of the shift partners has a sliding gear section that can be brought into engagement with one of the toothed sections of the sliding sleeve. At least the first and second toothed sections of the sliding sleeve are each in the form of gearshift teeth. A transmission gearset is provided with a shifting mechanism of this type.

Abstract: An axle bridge system has an axle shaft and an axle bridge with a tubular section defining an inside space. The axle shaft is mounted rotatably and extends axially through the inside space, which can be filled at least partially by a lubricating fluid to define a first lubricating fluid space and a first lubricating fluid reservoir. A bearing in the wheel head rotatably supports the axle shaft, an end of which has a flange in contact with the wheel head to define a hollow space. The wheel head defines a second lubricating fluid space forming a second lubricating fluid reservoir, the second lubricating fluid space connected to the bearing for lubricating the bearing. A sealing ring between the axle bridge and the axle shaft blocks the connection between the bearing and the inside space to seal the first lubricating fluid reservoir relative to the second lubricating fluid reservoir.