List of elements of the cylinder-piston and connecting rod-piston groups with technological recommendations for repair to Figure VC2.150:
1. Piston rings:
- the ring locks must be positioned at an angle of 120° relative to each other;
- removal and installation should be carried out using piston ring pliers;
- the "TOP" marking must face the piston bottom;
- check the thermal gap (gap in the lock);
- check the height clearance between the groove and the ring.
2. Piston:
- mark the mounting position and cylinder assignment;
- the arrow on the piston bottom points to the side of the poly V-belt pulley;
- When installing, use a device to compress piston rings.
3. Piston pin:
- if installation is difficult, heat the piston to approximately 60°C;
- remove and install using a mandrel.
4. Retaining ring.
5. Connecting rod:
- can only be replaced as a set;
- mark the cylinder affiliation (B);
- installation position: marks (A) facing the poly V-belt pulley.
6. Connecting rod bearing shell:
- install in the proper position;
- do not swap used liners;
- install in the center;
- permissible values of axial movement along the neck:
- for new: 0.05-0.31 mm;
- maximum permissible value: 0.37 mm;
- determine the radial clearance using a Plasligage measuring wire;
- for new: 0.01 -0.06 mm;
- maximum permissible value: 0.09 mm;
- when measuring the radial clearance, do not rotate the crankshaft.
7. Cylinder block;
- check the cylinder diameter;
- check the dimensions of the pistons and cylinders.
8. Connecting rod bearing cap:
- install in the proper position;
- during manufacturing, the connection between the cover and the connecting rod is made by breaking, therefore the cover fits only to its connecting rod and only in one position. Avoid damaging the fracture surface (connecting rod to cover joint).
9. Connecting rod bolt, tightening torque 30 Nm and tighten by turning 1/4 turn (90°):
- TORX head E10;
- replace with a new one during assembly;
- lubricate the threads and the bearing surface of the head;
- to measure the radial clearance in the connecting rod bearing, tighten to a torque of 30 Nm, without tightening by 90°.
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