The oil pump takes oil from the engine sump through the oil receiver and delivers it through the channels to the connecting rod and piston group parts, the crankshaft and the cylinder head parts through the filter.
The oil pressure is regulated by a pressure reducing valve located in the oil pump.
Oil pressure in the system:
- 1.0 bar at idle;
- 3.5 bar at 3000 min⁻¹.
Fig. 3.90. Oil pump parts: 1 – bolts; 2 – hairpin; 3 – adjusting screw of the pressure reducing valve; 4 – spring; 5 – plunger of the pressure reducing valve; 6 – oil receiver; 7 – pump body; 8 – drive sprocket
The oil pump parts are shown in Fig. 3.90.