The cylinder block is made of aluminum alloy. The crankshaft is supported by 5 main bearings. Thrust half rings are mounted on the third main bearing.
Liners are installed in the lower heads of the connecting rod. The pistons are attached to the connecting rods with piston pins. The pistons are made of aluminum alloy and have three piston rings, two seals and one oil scraper.
The camshaft, located on top of the cylinder head, drives the timing belt and controls the valves via hydraulic tappets located under the camshaft lobes.
The engine is lubricated under pressure generated by the oil pump. The oil is sucked in through a strainer located in the oil receiver and then flows through an external installed filter into the channels of the cylinder block. From there, the oil flows to the crankshaft and camshaft. The connecting rod bearings are supplied with oil through an internal bore in the crankshaft. Oil is also supplied under pressure to the camshaft bearings. The camshaft and valve cams are lubricated with sprayed oil, as are all other moving parts of the engine.
Repair operations that can be performed on the engine installed in the car
The following operations can be performed without removing the engine from the vehicle:
- removal and installation of the cylinder head;
- removal and installation of a toothed drive belt and pulleys;
- replacement of the camshaft oil seal;
- removal and installation of the camshaft housing and camshaft;
- removal and installation of the oil pan;
- removal and installation of pistons and connecting rods;
- removal and installation of the oil pump;
- replacement of power unit supports;
- removal and installation of the flywheel.
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