Removal and Installation

CAUTION:
- When installing camshaft and oil seal, lubricate contacting surfaces with new engine oil.
- When tightening cylinder head bolts, camshaft sprocket bolts and camshaft bracket bolts, lubricate bolt threads and seat surfaces with new engine oil.
- Attach tags to valve lifters so as not to mix them up.

REMOVAL





1. Drain engine coolant.

CAUTION: Be careful not to spill coolant on drive belts.

2. Release the fuel pressure.
3. Remove the air duct to intake manifold collector.
4. Remove the engine drive belts.
5. Remove the front splash undercovers.
6. Remove the front exhaust tube.
7. Before removing the intake manifold collector from the engine, the following parts should be disconnected to remove the intake manifold collector:
- Fuel injector tube quick connectors.
- Ground harness

Harness connectors for:
- Electric throttle control actuator
- Swirl control valve (SULEV only)
- Swirl control position sensor (SULEV only)
- Water hoses from collector
- Heater hoses

Vacuum hoses for:
- EVAP canister
- Power brake booster
8. Remove the intake manifold rear supports.
9. Remove the exhaust manifold.
10. Remove the spark plugs.
11. Remove rocker cover.
12. Remove camshafts.





13. Remove cylinder head bolts.
- Cylinder head bolts should be loosened in two or three steps.

CAUTION: Head warping or cracking could result from removing the cylinder head bolts in incorrect order.

14. Remove cylinder head with intake manifold.

INSTALLATION





1. Before installing cylinder head gasket, apply a bead of Genuine RTV Silicone Sealant or equivalent, to mating surface of cylinder block as shown.
2. Install the cylinder head gasket.

NOTE: When installing the cylinder head with intake manifold, use a new cylinder head gasket.





3. Install cylinder head and cylinder head bolts with washers.
- Apply new engine oil to threads and seating surface of mounting bolts.

CAUTION:
- Be sure to install washers between bolts and cylinder head with washer orientation as shown.








4. Tighten cylinder head bolts (1) to (10) in numerical order as shown in 5 steps.
Cylinder head bolts
Step 1: 29.4 Nm (3.0 kg-m, 22 ft. lbs.)
Step 2: 58,8 Nm (6.0 kg-m, 43 ft. lbs.)
Step 3: 0 Nm (0 kg-m, 0 ft. lbs.) (loosen)
Step 4: 27.4 - 31.4 Nm (2.8 - 3.2 kg-m, 21 - 23 ft. lbs.)
Step 5: 50° - 55° (target: 50°) clockwise





CAUTION: Check and confirm the tightening angle by using angle wrench.





5. Tighten cylinder head auxiliary bolts (11) to (14) in numerical order shown.
Cylinder head auxiliary bolts: 6.28 - 8.34 Nm (0.64 - 0.85 kg-m, 56 - 73 inch lbs.)
- Verify shank length under bolt head. [Bolt 11: 20 mm (0.79 inch), bolts 12 - 14: 25 mm (0.98 inch)]
6. Installation of the remaining components is in the reverse order of removal.