2. Before installing the rings on the pistons, check the gaps of their locks as follows.
3. Lay the piston/rod assemblies and new ring sets on a clean work surface so that the related components are together. Place the cylinder block on a workbench so that you can access the top and bottom of the cylinders.
4. Insert the top ring into the first cylinder and align its position by lightly pressing it with the piston head. The ring should sit at the base of the cylinder, near the bottom of the piston stroke.
5. Pushing the probes into the space between the ends of the ring, select the appropriate one, the thickness of which is equal to the gap (see illustration). The probe should enter the gap with little resistance. Compare the measurement result with the data given in Specifications. If the gap is out of tolerance, check again that this ring should be in this particular cylinder.
6. If the gap is too small, it must be increased, otherwise the ends of the ring will abut against each other during engine operation, which will damage it. Gently grind the ends of the ring with a small file, holding the file in a vise, the jaws of which are equipped with soft pads. Grind only the end surface of the ends of the ring. Repeat the procedure for the remaining rings. Do not mix rings from different pistons and do not mix up pistons, keep them near the corresponding cylinder at all times.
7. Once the ring lock gaps have been checked (and corrected if necessary), rings can be installed on pistons. Start installation from the lowest groove (oil scraper ring). Please note that the ring consists of two working parts, separated by a spacer (middle part of the oil scraper ring). Note also that the two compression rings have different profiles and must each be installed in their respective groove using a special tool. Both compression rings have marks indicating their upper side (see illustration).
8. Position the locks of the rings so that they are 120°apart from each other.
Note: Strictly follow the instructions printed on the packaging of the ring set.
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