Cylinder block — pistons and connecting rods (Audi A4 B8)

1. Screws: replace; lubricate the threads and mating surface with oil; 35 Nm + turn further by 90°.
2. Connecting rod cap: thanks to the connecting rods made using the constructive fracture (cracking) method, the connecting rod cap is installed in only one position and only on the corresponding connecting rod; mark for reinstallation; mark the cylinder affiliation with paint "B"; when installing, please note: the wide adjusting flange "A" must be directed in the same direction on both the connecting rod and the connecting rod cap.
3. Bearing shells: install in the proper position; replace old bearing shells; take into account the design: upper liner (facing the piston) made of more wear-resistant material; a distinctive feature on new bearing shells: a black stripe on the working surface, at the edge of the joint; make sure the locking tabs are securely seated.
4. Connecting rod: with a broken cover; mark the cylinder affiliation with paint "B"; axial clearance for each new connecting rod pair: 0.20...0.44 mm; replace only the entire set; when installing, please note: the wide adjusting flange "A" must be directed in the same direction on both the connecting rod and the connecting rod cap.
5. Retaining ring: replace.
6. Piston pin.
7. Piston: measure piston protrusion at "TDC"; mark mont. position and belonging to the cylinder; if a scratch appears on the piston bottom or piston skirt, replace the piston.
8. Retaining ring: replace.
9. Piston rings: measure the thermal clearance; remove and install using piston ring pliers; installation position: "TOP" mark or inscription - to the piston bottom; spread the locks around the circumference at 120°.