Cylinder Head

Cylinder Head





Install cylinder head follow the steps below to tighten cylinder head bolts in numerical order as shown in the figure with cylinder head bolts wrench (commercial service tool).

CAUTION:
If cylinder head bolts re-used, check their outer diameters before installation. Refer to "Cylinder Head Bolts Outer Diameter".

Apply new engine oil to threads and seat surfaces of cylinder head bolts.
Tighten all cylinder head bolts.
Torque 98.1 Nm (10 kg-m, 72 ft-lb)
Completely loosen all cylinder head bolts.
Torque 0 Nm (0 kg-m, 0 ft-lb)

CAUTION:
In step "c", loosen bolts in reverse order of that indicated in the figure.

Tighten all cylinder head bolts.
Torque 39.2 Nm (4.0 kg-m, 29 ft-lb)





Turn all cylinder head bolts 90 degrees clockwise (angle tightening).

CAUTION:
Check the tightening angle by using the angle wrench (SST). Avoid judgment by visual inspection without SST.

Check tightening angle indicated on the angle wrench indicator plate.

Turn all cylinder head bolts 90 degrees clockwise again (angle tightening).





After installing cylinder head, measure distance between front end faces of cylinder block and cylinder head (left and right banks).
Standard 14.1 - 14.9 mm (0.555 - 0.587 in)
If measured value is out of the standard, re-install cylinder head.

Cylinder Head Bolts Outer Diameter





Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between "d1" and "d2" exceeds the limit, replace them with new one.
Limit ("d1" - "d2") 0.11 mm (0.0043 in)
If reduction of outer diameter appears in a position other than "d2", use it as "d2" point.