Contents: Removal ⇊ Installation ⇊
Removal
1. Disconnect the negative cable from the battery.
Warning! If the car stereo system is equipped with a security code, make sure you have the correct combination to activate the audio system before disconnecting the battery!
2. After marking, disconnect the high-voltage wires from the spark plugs (see Chapter Settings and ongoing maintenance).
3. Mark and disconnect all hoses and wires that interfere with head removal.
4. Remove the PCV valve and disconnect the breather hose from the cylinder head cover.
5. Wipe the cover thoroughly to prevent debris from entering the cylinder head/valve assembly.
6. Loosen the bolt securing the ground bus to the cylinder head cover (from the timing belt side).
7. Unscrew the cylinder head cover mounting bolts and remove them together with the sealing washers.
8. Carefully remove the cover together with the sealing gasket. If the gasket has stuck to the mating surface of the head, tap the cover with a soft-faced hammer to break the sealant layer. Under no circumstances should you attempt to separate the cover by prying it off with a lever inserted between the mating surfaces.
Installation
1. Remove the old gasket from the cylinder head cover groove, then carefully clean the mating surfaces of the cylinder head and cover. After scraping off traces of old sealant and gasket fragments, wipe the surfaces with a rag soaked in acetone.
Note: An undamaged, one-piece sealing gasket can, in principle, be reused.
2. Place the new rubber gasket into its groove on the head cover flange. Install the molded gasket by pushing it into the groove that runs around the perimeter of the cover. Apply a bead of RTV sealant to the corners where the head cover mating surface meets the front and rear camshaft bearing caps. Wait about five minutes for the sealant to begin to cure.
Note: Make sure that the top layer of sealant has slightly hardened (wait about 10 minutes, but no more), only then proceed to install the lid (in conditions of high humidity, polymerization of the sealant may begin with a slight delay).
3. Install the cover, place the sealing washers, screw in the mounting bolts and tighten them to the required torque.
4. On VTEC models, before installing the cylinder head cover, check the condition of the spark plug sealing washers.
5. Further installation is carried out in the reverse order of dismantling.