Contents: Removal ⤓ Installation ⤓
Removal
Disconnect the breather hoses leading to the cover. Do not disconnect any hoses unless it will interfere with removal
Disconnect the spark plug wires.
Inspect the end of the cylinder head cover closest to the pulleys. Some covers overlap the timing belt cover. If this is the case, remove the cylinder head cover mounting bolts.
If the upper timing belt cover overlaps the cylinder head cover, remove the timing belt cover and then remove the cylinder head cover bolts. Cover the belt with a thick protective cloth.
Lift the cylinder head cover and move it away from the cylinder head. Do not use a screwdriver, as this will damage the cover and cause oil leakage after assembly.
Models with seals at the end of the cover that is farthest from the pulleys, remove the semicircular seal from the head or from the cylinder head cover.
Clean the inside and outside surfaces of the cylinder head cover with solvent and a stiff brush. Clean the seal and head or mating surfaces of the cylinder head cover. Clean the mating surfaces of the gasket on the head
Check the gasket. Remove dirt.
Installation
Installation is carried out in the reverse order, taking into account the following:
Models with seals. Before installing the semi-circular plug (4), coat all its mating surfaces (2, 3) with oil-resistant gasket sealant. Install the plug in place. Apply a very small amount of sealant to the head surface on each side of the seal.
Apply a small amount of sealant to the cylinder head cover gasket at the vertical corners (1).
Place the gasket into the groove in the cap and position it correctly on the head.
Install rubber bushings, metal washers and mounting bolts through the cover. The cover must be tightened so as to compress the gasket.
If the timing belt cover was removed, reinstall it, making sure it fits properly and does not rub against the belt.
It is recommended to leave the engine idle for 1-2 hours to give the sealant enough time to cure before it is exposed to high temperatures and oil.