92 ENGINE COMPONENT AND LOCATION There are three filters, one by-pass and two full-flow, attached to a housing mounted at the lower right side of the engine. Oil flow through the filters and the lubrication system is controlled by six valves, including: Reducing Valve Safety Valve Oil Cooler Thermostat Valve Overflow Valve, Full-Flow Filter Opening Valve, Piston Cooling Control Valve, Piston Cooling The reducing valve maintains constant system oil pressure. The safety valve prevents excessive pressure during periods of high viscosity. The oil cooler thermostat valve prevents oil from entering the cooler until it warms to the set point.
The overflow valve allows oil to by-pass the filter if it becomes clogged. The opening valve prevents oil from moving to the piston cooling outlets until the system reaches the set pressure. The control valve regulates the oil flow to the piston cooling channels.