90 ENGINE COMPONENT AND LOCATION Lubrication System A gear-type pump at the rear of the engine, driven by the crankshaft gear, draws lubricant from the oil pan and supplies the system. Oil flows from the pump through the distribution housing to the filters, to a gallery at the right side of the engine serving the crankshaft journals, to a gallery at the left side serving piston lubrication and cooling, to the cylinder head and rocker shaft duct (valve rocker and camshaft) and back to the oil pan. The system includes crankcase ventilation. Two full-flow filters and a by-pass filter maintain clean lubricant. A sensor in the oil pan monitors fluid level.
There is an oil cooler immersed in engine coolant inside the coolant duct cover. Oil Pump W2033324 A strainer and pickup tube lead the lubricant into the pump. For the axle forward oil pan, the strainer is mounted on a short tube held in place by a bracket attached to the distribution housing. For the axle back model, a long tube without the bracket is supplied.