Oil pump | Screw for union. | Joint, double. | Screw without head. | Oil pump. | Pump body. | Spring. | Strainer. | Fixed pinion (4 T). | Gear wheel (5 T). | Piston. | Drive pinion. | Spring seat. | Copper joint. | Suction ho&q. | Cl-pine; plate. | sealing ring. | Drive spindle. | Half-cotter.