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 12 and 23 - in the => [ Cylinder Head and Cover Overview ] Cylinder Head and Cover Overview.
Cylinder Head Cover Bolt Tightening Sequence and Specification
- Tighten the bolts, working from the inside toward the outside - 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, starting from the inside and working toward outside - 1 through 20 -, as follows:
1 - Tighten the bolts to 15 Nm
2 - Tighten the bolts to 30 Nm
3 - Tighten the bolts an additional 90° (1/4) turn
4 - Tighten the bolts and additional 90° (1/4) turn
Sealing Flange to Cylinder Block Bolt Tightening Sequence and Specification
- Tighten the bolts in 3 steps as follows:
1 - Tighten the bolts - 1 - to 5 Nm
2 - Tighten the bolts - 2 - to 23 Nm
3 - Tighten the bolts - 1 - to 10 Nm
Camshaft Bearing Cap Nut Tightening Sequence and Specification
Intake Camshaft - A -
- 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 cap 7 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.
Exhaust Camshaft - B -
- 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 cap 8 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.