Under vacuum, the oil is sucked in through the strainer of the oil receiver from the oil sump and pumped by the gear oil pump into the oil filter. The purified oil enters the oil line of the cylinder block and from it is supplied to the main bearings of the crankshaft, to the connecting rod bearings, and through the channels in the cylinder head to the camshaft bearings.
Oil pump
The gear type oil pump is driven by the countershaft gear. A pressure reducing valve is located in the oil pump cover.
Gap between gear teeth, mm:
- nominal: 0.05;
- maximum: 0.20.
Gap between the outer diameter of the gears and the bore in the pump housing, not 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 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 circuits 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. From August 1982, an oil pressure sensor was additionally installed (with white insulator), which closes the control lamp power supply circuits when the pressure drops to 2 less than 1.8 kg / cm2 at a crankshaft speed of 2100 rpm.
Oil filter
An oil filter with a replaceable filter element is connected in series with the main engine oil line.
Brand and type of filter element: Purolator PC 252.
Engine oil
Lubrication system capacity, l:
- YN, WV, DT, YP engines with stamped oil sump: 3.0 (including 0.5 l in oil filter);
- engines YN, WV, DT, YP with aluminum oil sump, DS, EP: 3.5 (including 0.5 l in oil filter).
Oil used: SAE 5W20, 10W40, 15W50 or 20W40; API SE.
Oil change interval: every 15,000 km with oil filter change.
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