Usually, the replacement of the gasket under the cylinder head cover is required if there are oil leaks from under the cover

We also replace the gasket when it becomes necessary to repair the cylinder head.

On the K4M engine, a sealant-gasket is used instead of a gasket

You will need the tools that were used to remove the air filter and ignition module, as well as a Torx T50 key

Preparing the car for repair. Disconnect the wire from the negative terminal of the battery.

On K7J and K7M engines do the following:

Renault Sandero cylinder head cover gasket replacementRenault Sandero cylinder head cover gasket replacement

Remove the air filter (described in the article - How to replace the Renault Sandero engine air filter element)

Remove the ignition module (described in the article - Replacing elements of the Renault Sandero ignition system)

Renault Sandero cylinder head cover gasket replacementRenault Sandero cylinder head cover gasket replacement

Remove the adsorber purge hose from the holder on the cylinder head cover

Disconnect the hose of the large branch of the crankcase ventilation system from the fittings of the cylinder head cover

Renault Sandero cylinder head cover gasket replacement

Disconnect the hose of the small branch of the crankcase ventilation system

Renault Sandero cylinder head cover gasket replacementRenault Sandero cylinder head cover gasket replacement

We unscrew the eight screws securing the cover

Remove the head cover

Renault Sandero cylinder head cover gasket replacement

Removing the gasket

We clean the grooves of the cover and the surface of the block head from the remnants of the old gasket

Renault Sandero cylinder head cover gasket replacement

Install a new gasket and head cover. We tighten the bolts of the head cover according to the order shown in the photo in two stages:

- the first stage - pre-tightening with a torque of 2 Nm;

- the second stage - the final tightening with a torque of 10 Nm.

Replacing the seal of the cylinder head cover of the K4M engine

We prepare the car and disconnect the negative battery terminal

Remove the air filter

Disconnect the wiring harness from the intake air temperature sensor on the receiver

Removing the ignition coils (described in the article - Replacing elements of the Renault Sandero ignition system)

Removing the receiver

Remove the oil separator

Remove the right suspension support of the power plant

Remove the top timing belt cover (described in the article - How to set Renault Sandero engine TDC)

Renault Sandero cylinder head cover gasket replacement

We unscrew the twenty-four head cover bolts

Renault Sandero cylinder head cover gasket replacement

Bolyou unscrew in the reverse order shown in the photo

Renault Sandero cylinder head cover gasket replacementRenault Sandero cylinder head cover gasket replacement

We pry off the cylinder head cover with a mounting spatula

Remove the cylinder head cover

Renault Sandero cylinder head cover gasket replacementRenault Sandero cylinder head cover gasket replacement

We clean the mating surfaces of the cover and cylinder head from the old sealant.

We degrease the mating surfaces of the cylinder head, oil separator and cylinder head cover with white spirit

We apply a sealant to the mating surface of the cylinder head (you can use a roller for painting). MASTIXO sealant or similar

Install the cover on the cylinder head

Tighten the cover bolts in four steps. The tightening sequence is shown in Figure 2

- the first stage - we tighten the bolts 22, 23, 20, 13 with a torque of 8 Nm

- the second stage - we tighten the bolts from the first to the twelfth, from 14 to 19, from 21 to 24 with a torque of 12 Nm;

- the third stage - loosen the bolts 22, 23, 20, 13;

- the fourth stage - we tighten the bolts 22, 23, 20, 13 with a torque of 12 Nm.

Renault Sandero cylinder head cover gasket replacement

Apply MAS-TIXO sealant to the oil separator using a paint roller

Renault Sandero cylinder head cover gasket replacement

Install the oil separator and tighten the bolts in the order shown in the figure to a torque of 15 Nm

Install the parts in reverse order.