- lubricate the inner surfaces of the cylinders;
- lay out the connecting rods opposite the corresponding cylinders. The marks on the lower heads of the connecting rods and the caps of the connecting rod bearings must be located opposite each other. The arrows on the piston crowns must point towards the front of the engine;
- turn the piston rings on the piston so that their locks do not coincide with each other (every 120°);
- with a clamping band, press the piston rings into their grooves, paying special attention to the unobstructed entry of the rings into the grooves;
- every time turn the crankshaft in such a way that the connecting rod journal of the installed piston with the connecting rod stops at BDC;
- push the connecting rod with the piston from above into the cylinder liner. Put the engine on its side so that the base of the connecting rod rod with the liner installed in it can be brought to the crankshaft journal without scratching the cylinder liner and bearing shell;
- without opening the clamping band of the piston rings, push the piston into the cylinder until the connecting rod base with the insert installed in it fits on the connecting rod journal of the crankshaft;
- Place the second bushing in the bearing cover with the guiding tab to the left and grease it liberally. After that, put the cap on the base of the connecting rod and lightly tap on it. The applied marks must be placed opposite each other;
- lubricate the contact points of the nuts with the connecting rod bearing cap;
Pic. 60. Measurement of the diameters of the pliable part of the bolts of the connecting rod bearing caps
- alternately tighten the connecting rod cap bolts to a torque of 30 Nm and then tighten them another 90°by turning the wrench knob another quarter of a turn. It should again be reminded of the need to measure before reusing the thin part of the connecting rod bolts, as shown in fig. 60;
- after installing the connecting rods, rotate the crankshaft several times in order to identify points of possible jamming;
- once again check the marking of the connecting rods and the correct installation of the pistons, taking into account the direction of the arrows on the bottoms of the pistons and their numbering according to the cylinders in the event that old parts are reused;
- check the backlash between each connecting rod bearing and the corresponding crankshaft journal with a feeler gauge. When using new parts, this gap should be between 0.11 and 0.23 mm. The maximum allowable wear value is 0.50 mm.