ARIA

ENGINE 119 2.1.6.2 COMPONENTS A. OIL PUMP The oil pump is a simple centrifugal pump driven by crankshaft. The pump is fitted with a relief valve. The main function of the oil pump is to circulate oil through the engine components. It sucks the oil from the oil sump through a strainer which prevents en- trance of any particles into the pump. OIL PUMP SPECIFICATIONS: Number of Lobes in Inner Ro- tor 10 Number of Lobes in Outer Ro- tor 11 Axial Play Driver Gear 0.04/0.08 Discharge at 800 rpm 11.6 LPM Discharge at 2000 rpm 29.0 LPM Shut of Pressure at 800 rpm 5.8 to 6.8 bar Shut of Pressure at 2000 rpm 9.0 to 10.8 bar Oil Pressure and temperature At Idling Pressure = 1.4 bar Temperature = 100± 5 0 C At Engine max speed( 4000 rpm) Pressure = 4.5 bar Temperature = 125± 5 0 C NOTE For other details refer overhauling procedure for oil pump in engine section. B. OIL FILTER: The oil filter used in ARIA is a “SPIN ON TYPE” oil filter. In Lubrication system flow the oil filter is locat- ed after the oil cooler and before the oil is sent to circulate in the engine. The main function of oil filter is to filter all contami- nants that get ingested into the engine, along with traces of worn out metals from bearings and other internal parts. The oil enters the oil filter under pressure through the holes on the perimeter of the base plate. The oil then passes through the filter element where it is "cleaned". It then flows to the central tube and back into the engine. NOTE For removal & fitment procedure of oil filter refer reg- ular maintenance engine section.