Specifications (cont’d)

Steps 3 to 6:
Step
3
4

Bolts
1 to 20
1 to 20

5
6

1 to 6
1 to 20

Tightening Specification/Additional Turn
3 Nm
3 Nm - this measurement takes into account the
lower timing chain cover shrinkage.
8 Nm
Tighten 90° additional turn

Audi A7 Reference Specification Book

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September 2013

89

Lower Timing Chain Cover Tightening
Specifications (cont’d)

Steps 7 to 9:
Step
7
8
9

90

Bolts
1, 2, 3,
and 4
1, 2, 3,
and 4
1, 2, 3,
and 4

Tightening Specification/Additional Turn
Remove the steel bolts M6x20
Insert the aluminum bolts and tighten to 3 Nm
Turn the aluminum bolts 90° further

Audi A7 Reference Specification Book

•

September 2013

Engine –
3.0L CPNB (TDI)

Upper Timing Chain Cover Tightening Specifications

Tighten the bolts in five steps in the sequence shown.
Replace any bolts that were tightened with an additional turn.
Step
1
2
3
4

Bolts
1, 2, and 3
4 to 7
1 to 7
1 to 7

5

1 to 7

Tightening Specification/Additional Turn
Install all the way in by hand.
Install all the way in by hand.
8 Nm
8 Nm - this measurement takes into account the
timing chain guard shrinkage.
Tighten 90° additional turn

Audi A7 Reference Specification Book

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September 2013

91

Cylinder Bank 1 (right) Bearing Cap Tightening Specification and Sequence

Step
1
2
1)

Bolts
1 to 12
1 to 12

Tightening Specification/Additional Turn
Install all the way in by hand.
9 Nm

Replace fastener(s) except bolt 3.

92

Audi A7 Reference Specification Book

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September 2013

Engine –
3.0L CPNB (TDI)

Cylinder Bank 2 (left) Bearing Cap Tightening Specification and Sequence

NOTE: The left cylinder head is shown.
The right cylinder head is identical.
Step
1
2

Bolts
1 to 12
1 to 12

Tightening Specification/Additional Turn
Install all the way in by hand.
9 Nm

Audi A7 Reference Specification Book

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September 2013

93

Cylinder Head, Loosening Bolts

Loosen the cylinder head bolts in the sequence -1 to 8

94

Audi A7 Reference Specification Book

•

September 2013

Engine –
3.0L CPNB (TDI)

Cylinder Head - Tightening
Specification and Sequence

Tighten the bolts in five steps in the sequence shown. Replace
any bolts that were tightened with an additional turn.
Step
1

Bolts
1 to 8

Tightening Specification/Additional Turn
Install all the way in by hand.

2
3

1 to 8
1 to 8

35 Nm
70 Nm

4

1 to 8

an additional 90° (¼ turn)

5

1 to 8

an additional 90° (¼ turn)

Audi A7 Reference Specification Book

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September 2013

95

Left Cylinder Head Cover Tightening Specification

Tighten the bolts in three steps in the sequence shown.
Replace any bolts that were tightened with an additional turn.
Step
1
2
3

96

Bolts
1 to 7
1 to 7
1 to 7

Tightening Specification/Additional Turn
Install all the way in by hand.
8 Nm
Tighten 90° additional turn

Audi A7 Reference Specification Book

•

September 2013

Engine –
3.0L CPNB (TDI)

Right Cylinder Head Cover Tightening Specification

Tighten the bolts in three steps in the sequence shown.
Replace any bolts that were tightened with an additional turn.
Step
1
2
3

Bolts
1 to 7
1 to 7
1 to 7

Tightening Specification/Additional Turn
Install all the way in by hand.
8 Nm
Tighten 90° additional turn

Audi A7 Reference Specification Book

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September 2013

97

Lubrication – 3.0L CPNB (TDI)
Fastener Tightening Specifications
Component
Chain sprocket for the oil pump to input shaft bolt 1)
Coolant shut-off valve to mounting plate bolt
Cover to oil filter housing
Engine oil cooler to mounting plate
Guide tube for the oil dipstick to engine bolt
Intake line to oil pump bolt
Mounting plate for the engine oil cooler bolt
Oil baffle bolt 1)
Oil drain plug
Oil filter housing bolt
Oil pan upper section drain plug 2)
Oil pressure regulation valve to oil pan upper section bolt
Oil pressure switch
Oil pump to oil return pipe bolt
Oil return pipe to oil pump bolt
Reduced oil pressure switch
Vacuum line from the vacuum pump
- Bolt
- Bolt 1)

1)
2)
3)

Nm
30 plus an
additional 45°
(⅛ turn)
9
35
9
9
9
9
3 plus an
additional 90°
(¼ turn)
30
9
25
9
20
9
9
20
9
3 plus an
additional 45°
(⅛ turn)

Replace fastener(s).
For Top Dead Center (TDC) marking
For bolt tightening clarification, refer to ElsaWeb, Oil Pan Upper Section Overview
and see items -19 and 21.

98

Audi A7 Reference Specification Book

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September 2013

Engine –
3.0L CPNB (TDI)

Upper Oil Pan Section Tightening Specifications

Step

Bolts

1

1 to 12

2 Nm

Tightening specification/additional turn

2

1 to 12

5 Nm

3

1 to 12

Tighten 90° additional turn

Audi A7 Reference Specification Book

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September 2013

99

Lower Oil Pan Tightening Specifications

Tighten the bolts in three steps in the sequence shown.
Replace any bolts that were tightened with an additional turn.
Step

Bolts

1

1 to 15

2 Nm

2

1 to 15

5 Nm

3

1 to 15

Tighten 90° additional turn

100

Tightening specification/additional turn

Audi A7 Reference Specification Book

•

September 2013

Engine –
3.0L CPNB (TDI)

Oil Pump with Vacuum Pump - Tightening
Specification and Sequence

Tighten the bolts in three steps in the sequence shown.
Replace any bolts that were tightened with an additional turn.
Step

Bolts

Tightening specification/additional turn

1

1 to 3

Install all the way in by hand.

2

1 to 3

8 Nm

3

1 to 3

Tighten 90° additional turn

Audi A7 Reference Specification Book

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September 2013

101

Cooling System – 3.0L CPNB (TDI)
Fastener Tightening Specifications
Component
Bracket for coolant auxiliary cooler bolt
- Bolt
- Nut
Bracket to coolant auxiliary cooler bolt
Check valve bolt
Coolant connection bolt
Coolant fan control module to fan shroud bolt
Coolant pipes 2)
- Bolt
- Banjo Bolt
Coolant pump to engine bolt 1)

Nm
20
8
3.5
9
9
2.5
9
12
3 plus an
additional 90°
(¼ turn)
23
9
9
9
5
9

Coolant pump ribbed belt pulley to coolant pump bolt
Coolant shut-off valve to mounting plate bolt
Engine coolant temperature sensor bolt
Engine temperature control sensor bolt
Fan shroud to coolant fan bolt
Front coolant pipe bolt
Left rear coolant pipe bolt 3)
- Bolt
- Bolt
Radiator bracket 4)
- Bolt
- Bolt
Upper coolant pipe bolt
1)
2)

3)

4)

9
20
4.5
5
9

Tighten diagonally in steps
For bolt tightening clarification, refer to ElsaWeb, Coolant Pipes Overview, items 13,
15 and 16.
For bolt tightening clarification, refer to ElsaWeb, Coolant Pipes Overview, items 22
and 24.
For bolt tightening clarification, refer to ElsaWeb, Radiator Overview items 18 and
20.

102

Audi A7 Reference Specification Book

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September 2013

Fuel Supply – 3.0L CPNB (TDI)
Fastener Tightening Specifications
Nm
8
2.1
20
1.6
2
1.5
110
20
2.5

Engine –
3.0L CPNB (TDI)

Component
Accelerator pedal module to bracket bolt
Fuel filter bracket nut
Fuel filler neck to fender bolt
Fuel pump control module bolt
Heat shield to fuel tank bolt
Locking flange cover screw
Locking ring
Mounting strap to body bolt
Reducing agent filler tube bolt

Turbocharger, G-Charger – 3.0L CPNB
(TDI)
Fastener Tightening Specifications
Component
Bracket for connector and engine cover to turbocharger
Bracket for turbocharger bolt 1)
Bracket for turbocharger stud bolt 2)
Charge air cooler
Charge air pressure sensor/intake air temperature
sensor bolt
Clamp 13 mm wide
Clamp 9 mm wide
Connection to turbocharger bolt
Right air guide pipe bolt
1)
2)

Nm
9
23
10
7
5
5.5
3.4
9
9

Tighten last to 23 Nm diagonally and in steps.
Replace nuts after each time they are loosened.

Audi A7 Reference Specification Book

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September 2013

103

Turbocharger - Tightening
Specification and Sequence

Tighten the bolts and nuts in seven steps in the sequence shown.
Replace the stud bolts and nuts.
Step

Bolts

1