Cylinder Head Assembly

Cylinder Head Bolt * (a):
Tightening torque (20 Nm -> 40 Nm -> +60� -> +80� (2.0 kgf-m -> 4.1 kgf-m -> +60� -> +80�, 15.0 lbf-ft -> 29.5 lbf-ft -> +60� ->+80�))





Note:
Use 12-point socket wrench to cylinder head bolts.
a) Install cylinder head to cylinder block.
b) Apply engine oil to cylinder head bolts threads.
c) Tighten cylinder head bolts to 20 Nm (2.0 kgf-m, 15.0 lbf-ft) in numerical order ("1" - "10") evenly and gradually.
d) In the same manner as in Step c), retighten them to 40 Nm (4.1 kgf-m, 29.5 lbf-ft).
e) In the same manner as Step c), retighten them to 60°.
f) In the same manner as Step c), retighten them to 80°.

Cylinder Head Bolt Inspection

NOTE:
Using cylinder head bolts that are deformed exceeding the service limit could lead to engine problems.

When cylinder head bolts are reused, make sure that they are not deformed exceeding the service limit referring to Cylinder Head Bolt Inspection Cylinder Head Bolt Inspection.





Distortion of mating surface of cylinder head and cylinder head gasket
Limit: 0.03 mm (0.0011 in.)









Distortion of seating face of intake manifold and exhaust manifold on cylinder head
Limit: 0.05 mm (0.0019 in.)












Camshaft Housing Bolt
Tightening torque 11 Nm (1.1 kgf-m, 8.5 lbf-ft)





Note:
Tighten camshaft housing bolts according to the following procedure.
a) Apply engine oil to bolt thread and seat of camshaft housing bolts.
b) Install camshaft housing No.1 (1).
c) Install camshaft housing bolts, and tighten them by hand.
d) Tighten camshaft housing bolts in numerical order ("1" - "21") evenly and gradually.



Camshaft Gear/Sprocket Torque and Sequence Specifications