- lubricate the inner surfaces of the cylinders;
- place the connecting rods opposite the corresponding cylinders. The marks on the lower heads of the connecting rods and the connecting rod bearing caps 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°);
- use a tension band to press the piston rings into their grooves, paying particular attention to the smooth entry of the rings into the grooves;
- the crankshaft must be turned each time in such a way that the connecting rod journal of the piston being installed with the connecting rod stops at BDC;
- push the connecting rod with the piston from above into the cylinder liner. Place the engine on its side so that the base of the connecting rod with the bearing insert installed in it can be brought to the crankshaft journal without scratching the cylinder liner and bearing insert;
- without loosening the piston ring tension band, push the piston into the cylinder until the connecting rod base with the insert installed in it seats on the connecting rod journal of the crankshaft;
- place the second insert into the bearing cap with the guide tab facing left and lubricate it generously. After this, place the cover on the base of the connecting rod and tap it lightly. The applied marks must be placed opposite each other;
- lubricate the contact points of the nuts with the connecting rod bearing cap;
Figure 60. Measuring the diameters of the flexible part of the connecting rod bearing cap fastening bolts
- alternately tighten the connecting rod cover mounting bolts to a torque of 30 Nm and then tighten them another 90° by turning the wrench handle another quarter turn. It is worth reminding again about the need to measure before reusing the thin part of the connecting rod bolts, as shown in the figure 60;
- after installing the connecting rods, turn the crankshaft several times to identify possible jamming points;
- check the connecting rod markings again and the correct installation of the pistons, taking into account the direction of the arrows on the piston bottoms and their numbering by cylinders if old parts are reused;
- check the side clearance between each connecting rod bearing and the corresponding crankshaft journal using a feeler gauge. When using new parts, this gap should be between 0.11 and 0.23 mm. The maximum permissible wear value is 0.50 mm.