Engine breather 1 Oil outlet 2 Oil temperature gauge 4 Oil pressure gauge 5 Oil inlet 3 Oil tank 6 Oil filter 7 Oil tank vent line 9 Engine oil pressure line 10 Oil tank drain 8 1 Supply Pressure Return Drain Vent 2 3 4 5 6 7 8 9 10 Figure 6-18.  Oil system perspective.  Figure 6-19.  Oil tank drain.  Figure 6-20.  Disconnect oil lines.  6-15