Cylinder Head, Valvetrain - Fastener Tightening Specifications

Fastener Tightening Specifications






• 1 Always replace

• 2 Install using liquid locking fluid (D 000 600 A2)

• 3 For bolt clarification, see - items 8 and 19 - in the => [ Cylinder Head Overview ] Cylinder Head Overview.

Cylinder Head Cover Bolt Tightening Sequence and Specification






- Tighten the cylinder head cover bolts in sequence - 1 through 17 - to 10 Nm.

Cylinder Head Bolt Tightening Sequence and Specification

Always Replace Head Bolts





- Tighten the cylinder head bolts in the specified sequence - 1 through 20 -, starting from the inside and working toward the outside, as follows:

- Tighten all the bolts to 15 Nm.

- Tighten all the bolts to 30 Nm.

- Tighten all the bolts an additional 90° (1/4) turn.

- Tighten all the bolts an additional 90° (1/4) turn

Camshaft Bearing Cap Nut Tightening Sequence and Specification






A - Intake Camshaft

- Install and tighten the nuts for bearing caps 5 and 9 alternately and in a diagonal sequence to 5 Nm + an additional 45° (1/8) turn.

- Install and tighten the nuts for bearing caps 1 and 13 to 5 Nm + an additional 45° (1/8) turn.

- Install and tighten the nuts for bearing caps 7 and 13 to 5 Nm + an additional 45° (1/8) turn.

- Install and tighten the nuts for bearing caps 3 and 11 to 5 Nm + an additional 45° (1/8) turn.

B - Exhaust Camshaft

- Install and tighten the nuts for bearing caps 6 and 10 alternately and in a diagonal sequence to 5 Nm + an additional 45° (1/8) turn.

- Install and tighten the nuts for bearing caps 2 and 14 to 5 Nm + an additional 45° (1/8) turn.

- Install and tighten the nuts for bearing caps 8 and 13 to 5 Nm + an additional 45° (1/8) turn.

- Install and tighten the nuts for bearing caps 4 and 12 to 5 Nm + an additional 45° (1/8) turn.