Under the action of vacuum, oil is sucked through the mesh filter of the oil receiver from the oil sump and is pumped by the gear oil pump into the oil filter. Cleaned oil enters the oil line of the cylinder block and from there is supplied to the main bearings of the crankshaft, to the connecting rod bearings, and through the channels in the cylinder head - to the bearings of the camshaft.
Oil pump
The gear type oil pump is driven by the intermediate shaft gear. The oil pump cover contains a pressure reducing valve.
Gap between gear teeth, mm:
- nominal: 0.05;
- maximum: 0.20.
The gap between the outer diameter of the gears and the bore in the pump body, no more than, mm: 0.15.
Oil pressure in the lubrication system, not less than, kg/cm:
- at idle: 0.30±0.15;
- at a crankshaft rotation speed of 2000 rpm: 2.0±0.2.
Oil pressure sensors
Until August 1982, an oil pressure sensor was used (with brown insulator), which closed the power supply circuit of the control lamp in the instrument cluster when the oil pressure in the lubrication system 2 dropped below 0.3 kg/cm² at idle. Since August 1982, an oil pressure sensor was additionally installed (with white insulator), which closes the power supply circuit of the control lamp when the pressure drops to 2 less than 1.8 kg/cm² at a crankshaft speed of 2100 rpm.
Oil filter
The oil filter with a replaceable filter element is connected in series with the main oil line of the engine.
Brand and type of filter element: Purolator PC 252.
Motor oil
Lubrication system capacity, l:
- yN, WV, DT, YP engines with stamped oil pan: 3.0 (including 0.5 l in the oil filter);
- yN, WV, DT, YP engines with aluminum oil pan, DS, EP: 3.5 (including 0.5 l in the oil filter).
Oil used: SAE 5W20, 10W40, 15W50 or 20W40; by API SE.
Oil change frequency: every 15,000 km with replacement of the oil filter.
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