2. If a ridge has formed at the top of the cylinders, it must be removed with a reamer or scraper without damaging the cylinder wall. The formation of a ridge indicates increased wear of the cylinder.
3. The connecting rod and connecting rod cap must be stamped with the cylinder number to which the connecting rod belongs. Cylinder N1 is located on the timing chain cover side. If the numbers are not visible, apply marks with paint or punch. Apply marks on the ground side surface of the connecting rod and cap.
4. Turn the crankshaft and set the pistons of the 1st and 4th cylinders to the BDC position.
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5. Unscrew the connecting rod cap nuts of the connecting rod of the 1st cylinder. Remove the cap and take out the lower connecting rod bearing. If the bearing is to be installed again, then glue it with adhesive tape to the removed cap.
6. To avoid damaging the crankshaft connecting rod journals, tape the threads of the connecting rod cap bolts.
7. Using the handle of a hammer, push the piston into the cylinder and pull the piston out through the top of the cylinder block. Remove the upper connecting rod bearing shell and tape it to the removed connecting rod.
8. Place the cover on the connecting rod and secure with nuts to maintain the previous assembly order of the parts.
9. Repeating the above operations, remove the connecting rod with the piston of the 4th cylinder.
10. Turn the crankshaft 180° and set the pistons of the 2nd and 3rd cylinders to BDC. Remove the connecting rods with pistons from these cylinders.