Removal and installation the cylinder head (Opel Ascona C)

Unscrew the pipes from the injection nozzles and the injection pump. Remove the pipelines as a whole without damaging their shape.

Disconnect the cables from the glow plugs and temperature sensor switch.

Unscrew the upper and lower guards of the toothed shaft.

Unscrew the housing on the clutch housing.

Set piston 1 of cylinder to TDC.

Unscrew the vacuum pump.

Lock the camshaft with the KM-537 key.

Attention! If the camshaft is to be replaced, it does not need to be blocked.

Source is on this resource: www.opelbook.ru

Loosen and remove the camshaft timing belt.

Remove the front exhaust pipe assembly.

Unscrew the camshaft wheel mounting bolts. To do this, hold the camshaft with a wrench by the chamfers between the intake and exhaust cams of cylinder 4.

Further operations are the same as for a gasoline engine.

Install the cylinder head gasket.

Attention! Depending on the piston protrusion in the upper position, gaskets of different thicknesses are used, three sizes with marks 2.1 and without marks, as shown in the figure B4b72. Install only the appropriate ones.

Check the piston and valve to see if there are any marks from impacts with each other. Replace if necessary. If the marks are small, it is enough to install a thicker gasket; to do this, you need to check the piston protrusion in the upper position with a micrometer. See table below.