10 Nm

2

Stud bolts for
the nuts -1,
and 21 and 2

3

1 and 2

9 Nm

4

1 and 2

Tighten 90° additional turn

5

3, 4 and 5

6

3 and 4

9 Nm

7

56

23 Nm

104

Tightening specification/additional turn

Install all the way in by hand.

Install all the way in by hand.

Audi A7 Reference Specification Book

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September 2013

Exhaust System, Emission Controls – 3.0L
CPNB (TDI)
Fastener Tightening Specifications

NOx sensor control module 2 with NOx sensor 2
- Bolt
- Nut
Particulate filter with catalytic converter nut 1) 2)
Particulate sensor
- Bolt
- Nut
Pressure line for the differential pressure sensor
Pressure pipe for differential pressure sensor
Reducing agent metering system control module to base
plate bolt
Suspended mount bolt
Selective Catalytic Reduction (SCR) - catalytic converter
to front exhaust pipe nut
Tank For the reducing agent bolt
1)
2)

Nm
5
23
23
9
2
9
9
35
45
9
30 plus an
additional 90°
(¼ turn)
50
2
23
45
2
45
45
4.5
23
23
20

Replace fastener(s).
Coat the thread with hot bolt paste.

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September 2013

105

Engine –
3.0L CPNB (TDI)

Component
Clamp for front exhaust pipe to reducing agent injector
bolt
Clamping sleeve nut
Connection to EGR cooler bolt
Coolant connection bolt
Cover for the reducing agent tank to tank
EGR cooler bolt
EGR motor to connection bolt
EGR temperature sensor
- Aluminum exhaust gas recirculation radiator bolt
- Steel exhaust gas recirculation radiator bolt
Engine coolant temperature sensor bolt
Exhaust manifold bolt 1) 2)

Exhaust Manifold - Tightening
Specification and Sequence

Replace the nuts. Coat the thread on the nut with hot bolt paste.
Refer to the Parts Catalog. Tighten the nuts in 3 steps according to
the tightening sequence:
Step

Bolts

1
2

Stud bolts for
the nuts -1,
and 21 and 2

3

1 and 2

106

Tightening specification
Install all the way in by hand.
15 Nm
25 Nm

Audi A7 Reference Specification Book

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September 2013

Replace the nuts. Coat the thread on the nut with hot bolt paste.
Refer to the Parts Catalog. Tighten the nuts in 3 steps according to
the tightening sequence:
Step

Bolts

Tightening specification

1

2 and 3

2

1

3

2 and 3

Turn them by hand until the bolt heads are
touching
Position using the tab on the EGR pipe tightening
specification.
• Part number 059 131 548 C: 5 Nm
• Part number 059 131 548 D: 3.5 Nm
5 Nm

4

2 and 3

Tighten 90° additional turn

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September 2013

107

Engine –
3.0L CPNB (TDI)

EGR Pipe at the Turbocharger - Tightening
Specification and Sequence

Exhaust Gas Recirculation (EGR) Pipe at the Intake
Manifold - Tightening Specification and Sequence

The flange at the EGR pipe must not be wavy or bent. Attach the
EGR pipe with the seals and the screw-type clamps. Coat the thread
on the bolts with hot bolt paste; for the correct hot bolt paste refer to
the Parts Catalog.
Step

Bolts

1

1 and 2

2

3

3

1 and 2

108

Tightening specification
Turn them by hand until the bolt heads are
touching
Position them as shown in the illustration
2.5 Nm
9 Nm

Audi A7 Reference Specification Book

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September 2013

Multiport Fuel Injection – 3.0L CPNB (TDI)
Fastener Tightening Specifications

Wiring guide to intake manifold bolt
1)
2)

Nm
70
1.5
9
9
4
9
2.5
9
4.5
22
25
2
25
22
9
5
3.5
2
55
2
9

Engine –
3.0L CPNB (TDI)

Component
Adapter to high pressure pump bolt
Air guide bolt
Air guide pipe to intake flap motor bolt
Bracket for the air guide pipe bolt
Bracket for the connector to intake manifold bolt
Clamp the high pressure line bolt
Counter pin
- On camshaft bearing
- On cylinder head
Differential pressure sensor
Fuel rail bolt
Fuel return hose to fuel rail banjo bolt
Fuel temperature sensor
High pressure line
High pressure pump bolt
Intake flap motor to intake manifold bolt
Intake manifold mounting pins to cover bolt
Mass airflow sensor bolt
NOx sensor control module with NOx sensor nut
Oxygen sensor 2)
Particle sensor nut
Pipe for the exhaust gas recirculation to air guide pipe
bolt
Pressure line for exhaust pressure sensor 1)
Tensioning Claw 1)
- First tightening
- Second tightening

45
6
Tighten 90°
additional turn
4

Replace
Coat threads with hot bolt paste

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September 2013

109

Intake Manifold - Tightening
Specification and Sequence

Tighten the bolts in 3 steps as follows:
Step

Bolts

1

1 through 4,
arrows
1 through 4

Install all the way in by hand.

1 through 4
and arrows

9 Nm in any sequence

2
3

110

Tightening specification

5 Nm in sequence shown

Audi A7 Reference Specification Book

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September 2013

Engine –
3.0L CPNB (TDI)

Fuel Pressure Regulator Valve -N276- Tightening Specification

Align the Fuel Pressure Regulator Valve -N276- such that connecting
the harness connector -arrow- does not cause the electrical wiring to
be placed under tension. Counterhold the housing hex bolt to tighten
union nut on regulator valve in four stages as follows:
Step

Tightening specification

1

Install all the way in by hand.

2

60 Nm

3

Turn back 90°

4

85 Nm

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September 2013

111

Fuel Pressure Sensor -G247Tightening Specifications

Tighten the Fuel Pressure Sensor -G247- in four steps:
Step

Tightening specification

1

Install all the way in by hand.

2

60 Nm

3

Turn back 180°

4

85 Nm

Ignition – 3.0L CPNB (TDI)
Fastener Tightening Specifications
Component
Camshaft Position (CMP) sensor
Engine Speed (RPM) sensor
Glow Plug

112

Audi A7 Reference Specification Book

Nm
9
9
12

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September 2013

Automatic Transmission – 0BK
General, Technical Data – 0BK

Auto Trans. – 0BK

Transmission Identification

The transmission code letters are located on the data plate
under the transmission. Type plate installed location (Æ).

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September 2013

113

Transmission Identification (cont’d)

1 - Transmission serial number
2 - Parts list number
3 - Manufacturer transmission identification: 8HP-55
4 - Example of a transmission code: MNX
Note: The transmission code letters are also
included on the vehicle data labels.

114

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September 2013

Automatic Transmission
0BK AWD
Transmission Identification
NEU, NNT, NXT
NPV, PTT
codes
Torque
Identification
Y137
N140
converter
codes
Allocation
Type Audi A7 from MY 2011
Audi A6 from MY
2011 RS6
Engine
3.0L TFSI - 228 kW
4.0L TFSI - 412 kW
Primary drive
25:27 = 0.862
27 : 29 = 0.931
Gear wheel, front axle
31:29 = 1.069
31 : 29 = 1.069
Front axle bevel gear
34:11 = 3.091
34 : 11 = 3.091
2.848
3.076
Complete front axle ratio =
primary drive x drive wheel
x bevel gear
Rear axle bevel gear
43:13 = 3.308
43 : 13 = 3.308
Complete rear axle ratio =
2.851
3.080
rear axle bevel gear x
primary drive
Oil system, front final drive/
Separated
transfer case
Refer to the Parts Catalog for the following information:
• Production time period.
• Transmission fluid specification
• Driveshaft flange allocation
Automatic Transmission
0BK AWD
Transmission
Identification codes
PDC
Torque
Identification codes
F166
converter
Allocation
Type
Audi A7 from MY 2011
Engine
3.0L TDI - 176 kW
Primary drive
27 : 33 = 0.818
Gear wheel, front axle
30 : 31 = 0.968
Front axle bevel gear
35 : 11 = 3.182
Complete front axle ratio =
2.519
primary drive x drive wheel x bevel gear
Rear axle bevel gear
37 : 12 = 3.083
Complete rear axle ratio =
2.523
rear axle bevel gear x primary drive
Oil system, front final drive/transfer case
Separated
Refer to the Parts Catalog for the following information:
• Production time period.
• Transmission fluid specification
• Driveshaft flange allocation
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September 2013

115

Auto Trans. – 0BK

Code Letters, Transmission Allocations,
Ratios and Equipment

Controls, Housing – 0BK
Securing Transmission to Engine

Item
1
2
through
6
7
8, 11
9
10
A
1)

2)

Bolt
M10 x 50 1)
M12 x 100 2)
M12 x 125
M10 x 60 2)
M10 x 75 2)
M10 x 95 2)