Left valve cover (Discovery 3)

Removal

1. Disconnect the ground cable from the battery. For more information, refer to Specification.

2. Remove the individual ignition coil. For more information, refer to Ignition Coil in Block with Spark Plug (18.20.44)

3. Remove the remaining individual coils.

4. Remove the oil level indicator and tube.

• Remove the dipstick.
• Remove the nut.
• Discard the sealing ring.

5. Disconnect the engine wiring harness from the support bracket.



6. Disconnect the variable valve timing (VCT) solenoid electrical connector.

7. Disconnect the breather from the cylinder head cover.



8.

NOTE: Before removing the bolts, remember their location.

Remove the cylinder head cover. Unscrew the 14 cylinder head cover mounting bolts.



9. Remove and discard the cylinder head cover gaskets.



10.

NOTE: Do not perform further disassembly if the part is removed only for access.

Remove the oil filler tube. Remove the sealing ring and discard it.

Installation

1. Install the oil filler tube. Install the sealing ring.



2. Install new seals into the cylinder head cover holes.

3. Install a new cylinder head cover gasket.

4.

NOTE: Apply two beads of silicone gasket sealant as shown in the illustration. The beads of sealant should be 3 mm in diameter and 12 mm long. Install the cylinder head cover immediately after applying the sealant. The cylinder head cover must be installed directly onto the head without smearing the sealant on the gasket.

Install the cylinder head cover. Clean the contact surfaces of the parts.



5. Screw in the cylinder head cover bolts.

• Screw in the cylinder head cover bolts in accordance with their previous location.
• Tighten the bolts in the order shown in the figure.
• Tighten the bolts (tightening torque 12 Nm).

6. Connect the variable valve timing (VCT) solenoid electrical connector.



7. Connect the engine wiring harness to the support bracket.

8. With assistance, install the oil level indicator and tube.

• Clean the contact surfaces of the parts.
• Install the sealing ring.
• Lubricate the seal with clean engine oil.
• Tighten the nut (tightening torque 6 Nm).

9. Install the individual ignition coil. For more information, refer to Ignition Coil in Block with Spark Plug (18.20.44)

10. Install the remaining individual ignition coils.