The U-371 was one of the early VIICs so I guess she was equipped with a direct reversible GW engine and a lubeoil centrifuge plant and plan 14 would be relevant. As you shall see a substantial part of the system is on the main engine. The system works as follows. The engine attached luboilpump draws lubeoil from the relevant sytemtank, the pipe (turquoise) has a NR.valve and a cock operated from the deckplates before entering the suction inlet of the gear luboilpump. As you have a direct reversible engine, the gearpump works for both ways of rotation. Just before entering the lubeoil pump, the pipe has a small valveconnection to the high pressue luboil pipe, going aft to the servomotor of the governor. The pumpdischarge pipe (red) passes over the torsional vibration damper cover at the front of the engine to a shut off valve (b) right before a valvechest, distributing the oil via a filter to the luboilcooler (using seawater). Going through the cooler, the oil is discharged at the bottom to a three way cock in a cross over pipe having connection (shut) to the stb. lubeoilsystem. Right after a smaller pipe (high pressure) branch off to the afterpart of the engine to the servomotor for the governor.The smaller yellow pipes are the drainpipes from the cooler, pumpdischarge and the lubeoil pressurereducing valve (3-1,5 kg/cm2) fitted at the front of the engine. From the reducing valve the lubeoil pipe goes aft along the engine with branch off pipes to each mainbearing, torsional vibration damper, camshaft and supercharger. From the drainconnections on the main engine the drains (yellow) goes to the drain distribution box on top of the relevant systemtank and to the tank
Tore