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PRE-RELEASE

Cylinder head, A20NFT/LHU

Cylinder head, A20NFT/LHU

To remove


1. Apply wing covers and remove the battery cover and the negative battery cable.

2. Remove the upper engine cover.

3. Empty the cooling system. See Cooling system, draining and filling, A20NFT/LHU.

4. Remove solenoid valve - intake. See Solenoid valve, camshaft intake .

5. Remove solenoid valve - exhaust. See Solenoid valve, camshaft exhaust .

6. Remove intake manifold. See Intake manifold, A20NFT/LHU .

7. Remove exhaust manifold. See Exhaust manifold or Exhaust manifold, 4WD .

8. Remove the upper timing chain guide. See Timing chain, upper, A20NFT/LHU .

9. Remove the camshaft pinion. See Camshaft pinion

10. Remove the plug from the cylinder head.

11. Remove the bolt for the chain guide on the intake side, move away the guide and refit the bolt.

12. Remove the cylinder head in the order shown in the illustration.



To fit


1. Carefully blow the bolt hole clean in the cylinder block with compressed air.

2. Clean the cylinder bore, cylinder head and cylinder block sealing surfaces from any gasket remains. Check with a steel rule that the cylinder head and cylinder block are flat and the sealing surfaces are not damaged.

3. Check the marks on the pulley and timing cover to make sure the engine is zeroed.

4. Place a new gasket on the cylinder block. Raise the chain and tighten the chain guides together in order to get the cylinder head in place.

5. Fit the cylinder head according to the order shown in the illustration. Insert the bolts carefully. The threads in the cylinder block can be damaged if they are dropped rapidly.

Tightening torque step 1: 30 Nm (22 lbf ft)

Tightening torque, step 2: 150°

Tightening torque, step 3: 15°

Tightening torque, bolts for timing section, 35 Nm (26 lbf ft)


6. Remove the bolt for the chain guide. Move back the guide and fit the bolt.

Tightening torque 10 Nm (7 lbf ft)

7. Fit the plug in the cylinder head.

Tightening torque 35 Nm (26 lbf ft)

8. Fit the camshaft pinion. See Camshaft pinion .

For correct setting. See information in Timing chain, A20NFT/LHU .

9. Fit the upper timing chain guide. See Timing chain, upper, A20NFT/LHU .

10. Fit exhaust manifold. See Exhaust manifold or Exhaust manifold, 4WD .

11. Fit intake manifold. See Intake manifold, A20NFT/LHU .

12. Fit solenoid valve - exhaust. See Solenoid valve, camshaft exhaust .

13. Fit solenoid valve - intake. See Solenoid valve, camshaft intake .

14. Fill the cooling system. See Cooling system, draining and filling, A20NFT/LHU .

15. Remove the wing cover. Fit the battery's negative cable and the battery cover, and restore the car's electrical functions, see Measures following battery removal .

16. Fit the upper engine cover.


PRE-RELEASE