Fastener Tightening Specifications

Component	Bolt Size	Nm
Balance Shaft, Exhaust Side²	-	9
Balance Shaft, Intake Side²	-	9
Bearing Bracket^{1, 2}
	-	9
	M6	8 + 90°
	M8	20 + 90°
Camshaft Adjuster Actuator	-	5
Camshaft Position Sensor	-	9
Camshaft Timing Chain Guide Rail, Guide Pins	-	20
Chain Tensioner⁴	-	9
Chain Tensioner³	-	65
Control Valve	-	35
Engine Lifting Eye	-	25
Guide Rail for Timing Chain, Guide Bolts	-	20
Heat Shield^{5, 6}
	-	9
	-	20
Mounting Plate	-	9
Oil Dipstick Guide Tube	-	9
Retaining Plate	-	9
Sealing Plugs	-	5
Tensioning Rail for Timing Chain, Guide Bolts	-	20
Timing Chain Tensioning Rail, Guide Bolts	-	20
¹ For bolt tightening clarification, refer to CAMSHAFT TIMING CHAIN OVERVIEW and see items -5 and 7- ² Always replace ³ For bolt tightening clarification, refer to BALANCE SHAFT TIMING CHAIN OVERVIEW and see items -4- ⁴ For bolt tightening clarification, refer to CAMSHAFT TIMING CHAIN OVERVIEW and see items -2- ⁵ For bolt tightening clarification, refer to CYLINDER HEAD OVERVIEW and see items -13, 15 and 16- ⁶ For bolt tightening clarification, refer to CYLINDER HEAD OVERVIEW WITH AVS and see items -16, 18 and 19-

Intermediate Shaft Sprocket Tightening Sequence

Fig 1: Identifying Intermediate Shaft Sprocket

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

Always replace the intermediate shaft sprocket. Otherwise the backlash will not adjust itself and it could result in engine damage.

The new intermediate shaft sprocket has an anti-friction coating that wears off after a short period of use, which automatically adjusts the backlash.

-- Tighten with a new bolt as follows:

-- Tighten to 10 Nm using a torque wrench.

-- Rotate the intermediate shaft sprocket.

The intermediate shaft sprocket must not have any play. Loosen and tighten it again if necessary.

-- Tighten to 25 Nm using a torque wrench.

-- Tighten further 90° using a rigid wrench.

Crankcase Ventilation, Tightening Sequence

Fig 2: Identifying Crankcase Ventilation - Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

NOTE:

The bolts are self-tapping. Only use original bolts when replacing the cylinder head, since the cylinder head is delivered without a thread for the installing the crankcase ventilation.

It is not permitted to cut the thread with a thread cutter.

-- Tighten the crankcase ventilation bolts to 11 Nm in sequence -1 to 10-.

Cylinder Head with AVS Tightening Sequence

Fig 3: Cylinder Head Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the cylinder head bolts in sequence -1 to 10-.

1. Tighten to 40 Nm using a torque wrench.

2. Tighten further 90° using a rigid wrench.

3. Tighten further 90° using a rigid wrench.

4. Tighten the bolts -arrows- to 8 Nm.

5. Tighten the bolts -arrows- 90° further using a rigid wrench.

Cylinder Head without AVS Tightening Sequence

Fig 4: Cylinder Head Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the cylinder head bolts in sequence -1 to 5-.

1. Tighten to 40 Nm using a torque wrench.

2. Tighten further 90° using a rigid wrench.

3. Tighten further 90° using a rigid wrench.

4. Tighten the bolts -arrows- to 8 Nm.

5. Tighten the bolts -arrows- 90° further using a rigid wrench.

Upper Timing Chain Cover - Tightening Sequence

Fig 5: Identifying Upper Timing Chain Cover - Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in the sequence shown -1 through 5- :

1. Tighten the bolts to 9 Nm.

Lower Timing Chain Cover Tightening Sequence

Fig 6: Timing Chain Lower Cover Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts -1 through 15- in 2 stages in the sequence shown:

1. Tighten the bolts to 8 Nm.

2. Tighten the bolts an additional 45°.

Cylinder Head Cover with AVS Tightening Sequence

Fig 7: Cylinder Head Cover Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Replace the bolts.

1. Hand-tighten bolts in several stages in sequence -1 to 6-.

2. Tighten the bolts in sequence -1 to 6- to 8 Nm using a torque wrench.

3. Tighten the bolts an additional 90° using a rigid wrench in the sequence -1 to 6-.

Cylinder Head Cover without AVS Tightening Sequence

Fig 8: Cylinder Head Cover Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Replace bolts

1. Hand-tighten bolts in several stages in sequence -1 to 6-.

2. Tighten the bolts in sequence -1 to 6- to 8 Nm using a torque wrench.

3. Tighten the bolts an additional 90° using a rigid wrench in the sequence -1 to 6-.