Warning! Connecting rod and piston group parts with a floating pin are not interchangeable with connecting rod and piston group parts with a pressed pin. 3 one and the same cylinder block can be equipped with either of the two connecting rod and piston groups.
To perform the work you will need a device for pressing out the piston pin, a mandrel for installing the piston pin and a technical hair dryer (heat gun).
Disassembly
1. Remove the piston rings from the piston ("Piston rings and connecting rod bearings - replacement").
2. Using the tool, press out the piston pin.
3. If there is no special device, the pin can be pressed out in a vice using a mandrel. As a support, we use a wooden block of sufficient thickness with a hole drilled in it for the finger.
4. Remove the piston from the connecting rod.
Assembly
The selection of the piston to the cylinder and the pin to the piston is performed in the same way as shown in section 8.1.26.1 (see above).
Warning! The engine must be equipped with pistons and connecting rods of the same weight class.
1. Install the piston pin on the mandrel.
2. Clamp the connecting rod in a vice and heat its upper head to a temperature of 200-250°C using a heat gun.
3. Place the piston on the upper head of the connecting rod and center their holes with a mandrel.
Warning: When assembling the connecting rod with the piston, make sure that the marking on the connecting rod and the marking on the piston are on the same side.
4. Pressing the piston to the connecting rod head in the direction of the arrow, in one quick movement, insert the finger into the holes to stop the mandrel in the piston.
5. Remove the mandrel from the finger.
6. Put the rings on the piston and install the piston into the cylinder ("Piston rings and connecting rod bearings - replacement").
Assembly
We assemble the piston with the connecting rod in the reverse order of disassembly. In this case, the arrow on the piston bottom and the marks on the connecting rod and its cover should face the same direction.
