Cylinder Head Assembly: Specifications

Cylinder Head Bolts
Replace cylinder head bolts





Tighten bolts in 4 stages in - 1 to 20 - sequence as follows:
The longer cylinder head bolts must be inserted in the middle holes of cylinder head.
Tighten bolts by hand
Tighten bolts to 30 Nm
Tighten bolts to 50 Nm
Tighten an additional 180° (1/2 turn)

Checking Cylinder Head for Distortion





Check cylinder head at multiple points for distortion, using straight edge and feeler gauges.
Max. permissible distortion 0.05 mm

Camshafts - Tightening Specifications and Tightening Sequence





Tighten nuts on intake camshaft - A - in 5 stages as follows:

1. Install bearing cap 5 and 9 nuts alternately and diagonally as far as stop.

2. Tighten the bearing cap nuts 5 and 9 to 5 Nm plus an additional 45° (1/8 turn).

3. Tighten the bearing cap nuts 1 and 13 to 5 Nm plus an additional 45° (1/8 turn).

4. Tighten the bearing cap nuts 7 to 5 Nm plus an additional 45° (1/8 turn).

5. Tighten the bearing cap nuts 3 and 11 to 5 Nm plus an additional 45° (1/8 turn).

Tighten nuts on exhaust camshaft - B - in 5 stages as follows:

1. Install bearing cap 6 and 10 nuts alternately and diagonally as far as stop.

2. Tighten the bearing cap nuts 6 and 10 to 5 Nm plus an additional 45° (1/8 turn).

3. Tighten the bearing cap nuts 2 and 14 to 5 Nm plus an additional 45° (1/8 turn).

4. Tighten the bearing cap nuts 8 to 5 Nm plus an additional 45° (1/8 turn).

5. Tighten the bearing cap nuts 4 and 12 to 5 Nm plus an additional 45° (1/8 turn).

Intake Manifold Torque & Sequence
Please refer to Intake Manifold for fastener tightening information Specifications

Exhaust Manifold Torque & Sequence
Please refer to Exhaust Manifold for fastener tightening information Specifications

Camshaft Gear/Sprocket Torque
Please refer to Camshaft Gear/Sprocket for tightening information Specifications