Piston assembly with connecting rod
1 - piston;
2 - piston pin;
3 - connecting rod;
4 - connecting rod cover;
5 - inserts;
6 - connecting rod cap nut;
7 - location of the mark;
8 - groove for oil scraper ring;
9 - groove for the second compression ring;
10 - groove for the upper compression ring.
Piston marks
1 - size group label;
2 - mark "front of engine".
Pistons with connecting rods - assembly
Pistons and connecting rods are supplied separately and, if the cylinder block has been bored, pistons with rings and pins of the appropriate repair size must be purchased.
Note: The piston pin holes are offset and it is important that when connecting the piston to the connecting rod, the mark on the piston head matches the mark on the connecting rod.
The finger must be prepared for assembly in advance.
When checking, the finger should fit tightly into the piston bosses using the force of the thumb.
Before directly assembling the piston with the connecting rod, place the piston pin and guide sleeve on the holder, securing it with a bolt. The bolt should not be tightened too much to avoid jamming.
Install the piston with the connecting rod on the prism of the device.
Caution: The piston and connecting rod timing marks must be located on the same side.
Insert your finger into the desired position using the tool of your choice. After pressing, check the correct installation of the pin, and also lubricate the pin through the holes in the piston bosses.
To check the correct assembly of the piston with the connecting rod, tilt the connecting rod at a slight angle, while the piston head should drop under its own weight.
Typical check of connecting rod and piston assembly
If you are using old pins, they should be checked for wear (arrows in the figure top right).
