oil return passage

bearing return oil temperature

conveyor system return oil

conveyor system return oil flow

cool oil return

cylinder return oil

cylinder return passage

dirty oil return hole

diverter valve oil return line

excess-oil return line

fuel oil return

fuel oil return regulation

fuel return passage check valve

fuel shutoff circuit oil return

head end oil return

high pressure return oil

hydraulic oil return line

impact hammer return oil line

impact hammer return oil line connection