FIELD: mechanical engineering; internal combustion engines; timing gears. SUBSTANCE: hydraulic device has housing, movable hydraulic cylinder with base, plunger, check valve consisting of spring member and ball, and spacer spring. Circular member installed on base of hydraulic cylinder is mated with spacer spring and spring member. Step is made on end face surface of circular member to engage with check valve ball. EFFECT: enhanced serviceability and reliability of hydraulic device. 2 dwg
