Fastener Tightening Specifications

WARNING: This page is about a different car, the 2008 Volkswagen R32. However, it is still accessible from the selected car via links, so may be relevant.

Component

Fastener Size

Camshaft Actuator Bolt ⁽¹⁾

60 + 90° turn

Camshaft Adjuster Valve Bolt

3.8

Camshaft Roller Chain, Chain Tensioner

Control Housing to Cylinder Head Bolt ⁽²⁾

Cylinder Head Cover to Cylinder Head Bolt/Nut

Fuel Line Bracket to Cylinder Head Cover Bolt

Intermediate Shaft Roller Chain, Chain Tensioner with Tensioning Rail Bolt ⁽²⁾

Lifting Eye to Cylinder Head Bolt

Sealing Flange to Timing Chain Cover Bolt

Wiring Harness Bracket/Timing Chain Cover Bolt/Stud

⁽¹⁾	Always replace

⁽²⁾	Install with locking compound

Cylinder Head Bolt Tightening Sequence and Specification

Fig 1: Identifying Cylinder Head Tightening Sequence

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tighten the cylinder head bolts in the sequence shown, starting from the inside and working toward the outside, as follows:

-- Pre-tighten all the bolts to 30 Nm.

-- Tighten all the bolts to 50 Nm.

-- Tighten all bolts 90° (1/4) additional turn, using a ratchet.

-- Tighten all bolts again 90° (1/4) additional turn, using a ratchet.

Camshaft Bearing Cap Nut Tightening Sequence and Specification

A - Intake Camshaft

Fig 2: Identifying Intake Camshaft And Exhaust Camshaft

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tighten the bearing caps 5 and 9 alternately and diagonally to 5 Nm + 45° (1/8) additional turn.

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

-- Install bearing cap 7 and tighten to 5 Nm + 45° (1/8) additional turn.

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

B - Exhaust Camshaft

Fig 3: Identifying Intake Camshaft And Exhaust Camshaft

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tighten the bearing caps 6 and 10 alternately and diagonally to 5 Nm + 45° (1/8) additional turn.

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

-- Install bearing cap 8 and tighten to 5 Nm + 45° (1/8) additional turn.

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