Dismantling the cylinder head VAZ-2123

Dismantling of the cylinder head of the VAZ-2123 engine

The removal of the cylinder head was covered in the article “Cylinder head removal”.

We install the head on the workbench and dismantle the cylinder head.

Important! After dismantling, the cylinder head parts must be marked or laid out in order.

Removal of the cooling system pipes

Unscrewing the heater pipe nuts
Fig. 1. Unscrewing the nuts securing the heater radiator inlet pipe to the cylinder head
  1. Using a 10 mm socket, we unscrew the two nuts securing the heater radiator inlet pipe to the cylinder head.
Removing the heater pipe
Fig. 2. Removing the heater pipe
  1. We remove the heater pipe.
Removing the pipe gasket
Fig. 3. Removing the heater pipe gasket
  1. We remove the heater pipe gasket.
Unscrewing the cooling jacket pipe nuts
Fig. 4. Unscrewing the nuts securing the cooling jacket pipe
  1. We unscrew the two nuts securing the cooling jacket pipe using a 13 mm socket.
Removing the pipe with the sensor
Fig. 5. Removing the pipe with the coolant temperature sensor
  1. We remove the pipe with the coolant temperature sensor of the injection system.
Removing the pipe gasket
Fig. 6. Removing the pipe sealing gasket
  1. We remove the pipe sealing gasket.

Dismantling of the valve mechanism

Fitting the support under the valve head
Fig. 7. Fitting the support (wooden or rubber block) under the valve head
  1. To release the valve collets, we place a support (wooden or rubber block) under the valve head.
Compressing the valve springs with the tool
Fig. 8. Compressing the valve springs with the tool
  1. We compress the valve springs with the tool. The tool pad is rested against the valve head, and the hook lever is hooked behind the nut screwed onto the stud securing the camshaft bearing housing.
Extracting the collets
Fig. 9. Extracting the collets with pliers or tweezers
  1. We extract the two collets with pliers or tweezers.
Releasing the tool lever
Fig. 10. Releasing the lever of tool А.60311R
  1. We gradually release the lever of tool А.60311R. We remove the valve head and the valve springs.
Removing the support washers
Fig. 11. Removing the upper and lower support washers of the springs
  1. We remove the upper and lower support washers of the springs.
Removing the oil deflector cap
Fig. 12. Removing the oil deflector cap with special pliers
  1. With special pliers we remove the oil deflector cap from the valve guide.
Removing the valve stem seal with screwdrivers
Fig. 13. Removing the valve stem seal with two screwdrivers (in the absence of a special tool)

Note: If there is no special tool, you can carefully prise off and remove the valve stem seal with two screwdrivers (everything must be done carefully, the guide is very fragile).

Removing the valve
Fig. 14. Removing the valve from the guide
  1. We remove the valve from the guide.
  2. In the same way we extract all the valves and oil deflector caps.

We thoroughly wash the cylinder head, remove carbon deposits from the combustion chambers and from the surface of the exhaust valves with a wire brush.

We prepare the head and the parts for inspection and reassembly. The reassembly will be covered in the next article.