The oil pump (Fig. 1) is a two-section gear pump.
The upper section of the oil pump supplies oil to the engine lubrication system and to the centrifuge, and the lower section to the oil radiator.
The engine cylinder block is cast iron, with insert liners made of gray cast iron with an acid-resistant insert in the upper part of the liner by clamping the liner collar between the block and the cylinder head through an asbestos steel gasket, and in the lower part by two rubber rings
The cardan shaft has two joints. The cardan joint consists of needle bearings 4 installed in the forks and secured with retaining rings 2, and a crosspiece 3 inserted into the bearings