This schematic shows the power train lube and cooling system.
The power train lube pump (1) and scavenge pump (2) are part of a two-section gear pump. The front section of the pump is the power train lube section and the rear section of the pump is the power train scavenge section. The power train pumps are driven by an input shaft that is coupled to the rear of the steering pump (3). The steering pump is driven by gears inside the flywheel housing.
The power train lube pump draws oil from the power train oil tank (4) and sends the oil through the power train oil filter (5) to the power train oil cooler (6). The cooled oil flows to the generator rotor (7) and the propulsion module (8) for cooling and lubrication.