1. Connections with bolts and nuts
1) Apply compressor oil to all fasteners to facilitate their tightening sufficiently to ensure a tight seal.
2) To prevent twisting of the pipelines, tighten with two wrenches.
3) Tighten threaded connections to the torques specified in the appendix to the chapter.
2. Flange connections with guide pin
1) Check the presence of the sealing ring, make sure it is not damaged and apply compressor oil to it.
2) Insert the tube as shown in the figure and tighten the nut by hand.
3) Tighten the nut to the required torque.
(Information is taken from a thematic website HYUNDAIBOOK.ru)