To perform the work you will need: a tool for pressing the piston pin, a mandrel for installing the piston pin, a technical hair dryer (thermal gun).
Disassembly
1. Remove the piston rings from the piston (see "Piston rings and connecting rod bearings - replacement").
2. Using a tool, we press out the piston pin.
3. In the absence of a special device, the pin can be pressed out in a vice using a mandrel. As a stop, use a wooden block of sufficient thickness with a hole drilled in it for a finger.
4. Remove the piston from the connecting rod.
Assembly
1. Install the piston pin on the mandrel.
2. We clamp the connecting rod in a vice and heat its upper head with a thermal gun to a temperature of 200-250°C.
3. We put a piston on the upper head of the connecting rod and center their holes with a mandrel.
4. Pressing the piston against the connecting rod head in the direction of the arrow, in one quick movement, insert the finger into the holes until it stops with the mandrel into the piston.
5. We take out the mandrel from the finger. After assembling the connecting rod with the piston, the number of the cylinder on the connecting rod and its cover should be on the right side of the piston when looking at the arrow stamped on it. When installing the piston in the cylinder, the connecting rod with the cylinder number should face the side of the block on which the tide for installing the oil filter is located, and with the catalog number towards the front end of the crankshaft.
We put rings on the piston and install the piston in the cylinder (see "Piston rings and connecting rod bearings - replacement").