Cylinder Head Assembly: Specifications

INSPECT CYLINDER HEAD





a. Inspect for the flatness. Using precision straight edge and feeler gauge, measure the surfaces contacting the cylinder block, intake and exhaust manifolds for warpage.
Maximum warpage: 0.10 mm (0.0039 inch)
If warpage is greater than maximum, replace the cylinder head.





b. Inspect for the cranks.
Using a dye penetrant, check the combustion chamber, intake ports, exhaust ports and cylinder block surface for cracks.
If cracked, replace the cylinder head.

INSTALL CYLINDER HEAD BOLTS

HINT:
- The cylinder head bolts are tightened in 3 progressive steps (steps c, e and f)
- If any of bolts break or deform, replace them.

a. Apply a light coat of engine oil on the threads and under the heads of the cylinder head bolts.
b. Install the 14 plate washers to each cylinder head bolt.





c. Using a 10 mm bi-hexagon wrench, uniformly tighten the cylinder head bolts, in several passes, in the sequence shown.
Torque: 35 Nm (350 kgf-cm, 26 ft. lbs.)
If any of the bolts do not meet the torque specification, replace the bolt.





d. Mark the front of the cylinder head bolt head with paint.
e. Retighten the cylinder head bolts 90° in the numerical order shown.
f. Retighten cylinder head bolts by an additional 90° shown.
g. Check that the painted mark is now turned to the rear.