Replacing the connecting rod and piston group with a pressed-in pin (VAZ-2112)

A connecting rod and piston group with a pressed-in pin is installed on some engines 2111.

To perform the work you will need: a device for pressing out the piston pin, a mandrel for installing the piston pin, a technical hair dryer (heat gun).

Disassembly

1. Remove the piston rings from the piston (see "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 stop, use a wooden block of sufficient thickness with a hole drilled in it for the pin.



4. Remove the piston from the connecting rod.

Assembly

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.



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 until the mandrel stops in the piston.



5. Remove the mandrel from the pin. After assembling the connecting rod with the piston, the cylinder number 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 be facing the side of the block on which the lug for installing the oil filter is located, and the catalog number should be facing the front end of the crankshaft.

We put the rings on the piston and install the piston into the cylinder (see "Piston rings and connecting rod bearings - replacement").