Check the clearance in the piston ring lock with a set of feeler gauges, inserting the rings into the cylinder using the piston. Also check clearance between piston rings and piston grooves (see subsection «Design and specifications»).
Make sure the label «Thor» on the lower compression ring faces up.
Using a piston ring opener, install the oil scraper ring, lower compression ring (conical section) and top compression ring (rectangular section) into the piston grooves.
Separate the joints of the rings by 180°relative to each other.
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