Cylinder Head Assembly

CYLINDER HEAD




Tighten the cylinder head bolts in the following sequence, using the 4 step torque-turn method. Tighten according to the following torque values:
Step 1: All 61 Nm (45 ft. lbs.)
Step 2: All 88 Nm (65 ft. lbs.)
Step 3: All (again) 88 Nm (65 ft. lbs.)
Step 4: + 90° Turn Do not use a torque wrench for this step.

HEAD BOLT REUSE/REPLACE

The cylinder head bolts must be examined BEFORE reuse. If the threads are necked down the bolts must be replaced.

Bolt torque after 90° turn should be over 122 Nm (90 ft. lbs.) in the tightening direction. If not, replace the bolt.

SURFACE VARIATION - HEAD-to-BLOCK

Deck surface must be within service limit of 0.1 mm (0.004 in.)

Cylinder head must be flat within:
Standard dimension less than 0.05 mm (0.002 inch.)
Service Limit 0.2 mm (0.008 inch.)
Grinding Limit Maximum of 0.2 mm (0.008 inch.) is permitted.

INTAKE MANIFOLD

Intake Manifold Bolts Specifications

EXHAUST MANIFOLD

Exhaust Manifold Bolts Specifications

CAMSHAFT GEAR/SPROCKET

Camshaft Gear/Sprocket Specifications