Attention! Before removing the pistons and connecting rods, remove the cylinder head, oil pan and oil pump.
1. Remove the shoulder formed as a result of the development and deposits of soot in the upper part of the cylinder, after checking with a fingernail for a ledge. If the shoulder is not removed, the piston may break when it is removed.
2. Turn over the engine.
3. Check the end play of the connecting rods by inserting a feeler gauge between the crankshaft and the connecting rod. The axial play will be equal to the total thickness of the probes at which the play disappears. If the end play of the connecting rod exceeds the standard value, then the connecting rod should be replaced. If new connecting rods are installed (or crankshaft), then the axial play may be less than normal (in this case it is necessary to grind the connecting rods, if necessary, consult a car service workshop). Repeat the procedure for the rest of the connecting rods.
4. If there are no marks on the connecting rods and connecting rod caps, mark them with the number of the corresponding cylinder.
5. Loosen the connecting rod cap nuts by unscrewing them 1/2 turn at a time until the nuts can be unscrewed by hand. Remove the cover from the connecting rod of the first cylinder together with the liner, do not remove the liner from the cover. Push the piston with the connecting rod and liner through the top of the cylinder, after putting the hose pieces on the bolts. If resistance is felt to piston movement, check for cleanliness of shoulder removal.
6. Turning the crankshaft, repeat the procedure for all other cylinders.
7. Assemble connecting rods with caps and bearings, hand-tighten cap nuts.