Cylinder Head Assembly: Specifications

SERVICE DATA AND SPECIFICATIONS (SDS)

Cylinder Head

CYLINDER HEAD

VALVE DIMENSIONS

VALVE GUIDE

VALVE SEAT

VALVE SPRING

Cylinder Head Torque & Sequence

Arrow Indicates Engine front

Install cylinder head, and tighten cylinder head bolts in numerical order as shown in the figure with the following procedure.

a. Apply new engine oil to threads and seating surface of mounting bolts.

b. Tighten all cylinder head bolts.

c. Turn all cylinder head bolts 100 degrees clockwise (angle tightening).

CAUTION:

Check and confirm the tightening angle by using an angle wrench [SST: KV10112100 (BT8653-A)] (A) or protractor.
Never judge by visual inspection without the tool.

d. Completely loosen.

CAUTION:
In this step, loosen cylinder head bolts in reverse order that indicated in the figure.

e. Tighten all cylinder head bolts.

f. Turn all cylinder head bolts 95 degrees clockwise (angle tightening).
g. Turn all cylinder head bolts 95 degrees clockwise again (angle tightening).

Re-usability

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 a new one.

If reduction of outer diameter appears in a position other than (d2), use it as (d2) point.

Camshaft Bearing Cap Torque & Sequence

Arrow Indicates Engine front

Tighten mounting bolts of camshaft brackets in the following steps, in numerical order as shown in the figure.

There are two types of mounting bolts. Refer to the following for locating bolts.

Tighten mounting bolts in numerical order.

INTAKE MANIFOLD

Specifications

EXHAUST MANIFOLD

Torque & Sequence

Camshaft Gear/Sprocket

Specifications