Overview - Timing Chain Cover

WARNING: This page is about a different car, the 2015 Audi A7 Quattro, 2014 Audi A7 Quattro, 2013 Audi A7, and 2012 Audi A7. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Timing Chain Covers Overview

Courtesy of AUDI OF AMERICA, LLC

Bolt
- Replacing
- Tightening specification and sequence, refer to Fig 4.
Shaft Seal
- For the crankshaft on the transmission side
- Replacing, refer to CRANKSHAFT SEAL, REPLACING, TRANSMISSION SIDE .
Bolt
- Replacing
- Tightening specification and sequence, refer to Fig 4.
Alignment Sleeve
- Quantity: 2
Threaded Pin
- Tightening specification, refer to Fig 4.
Left Cylinder Head Gasket
Bolt
- Replacing
- Tightening specification and sequence, refer to Fig 2.
Bracket
- For heat shield
Left Timing Chain Cover
- Removing and installing, refer to LEFT AND RIGHT TIMING CHAIN COVER, REMOVING AND INSTALLING .
Bracket
- For wiring harness
Bolt
- Replacing
- Tightening specification and sequence, refer to Fig 2.
Bracket
- for the left oxygen sensors electrical connectors
Bolt
- Tightening specification and sequence, refer to Fig 2.
Seals
- Replacing
Bracket
- for the right oxygen sensors electrical connectors
Bolt
- Tightening specification and sequence, refer to Fig 2.
Bolt
- Tightening specification and sequence, refer to Fig 3.
Bracket
- For the connectors
Right Timing Chain Cover
- Removing and installing, refer to LEFT AND RIGHT TIMING CHAIN COVER, REMOVING AND INSTALLING .
Right Cylinder Head Gasket
Bracket
- For heat shield
Bolt
- Replacing
- Tightening specification and sequence, refer to Fig 3.
Alignment Sleeve
- Quantity: 2
Bolt
- Tightening specification and sequence, refer to Fig 4.
Lower Timing Chain Cover
- Removing and installing, refer to LOWER TIMING CHAIN COVER, REMOVING AND INSTALLING .
Engine Speed Sensor -G28-
- Removing and installing, refer to Engine Speed Sensor -G28-, REMOVING AND INSTALLING .
Bolt
- Tightening specification -item 11- OVERVIEW - IGNITION SYSTEM => List Item:Bolt .

Fig 2: Identifying Left Timing Chain Cover Bolt, Tightening/Loosening Sequence

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Replace any bolts that were tightened with an additional turn.

The brackets -arrows A and B- are connected with the left timing chain cover.

-- Tighten the bolts in two steps in the sequence shown.

Step	Bolts	Tightening specification/additional turn
1.	-1 to 8-	5 Nm
2.	-1 to 8-	Tighten an additional 90°

Fig 3: Identifying Right Timing Chain Cover, Tightening Specifications and Sequence

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Replace any bolts that were tightened with an additional turn.

The brackets -arrows A and B- are attached to the right timing chain cover.

-- Tighten the bolts in two steps in the sequence shown.

Step	Bolts	Tightening specification/additional turn
1.	-1 to 8-	5 Nm
2.	-1 to 8-	Tighten an additional 90°

Fig 4: Identifying Lower Timing Chain Cover Bolt, Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Replace any bolts that were tightened with an additional turn.

-- Tighten bolts in stages as follows:

Step	Bolts	Tightening specification/additional turn
1.	-Arrows-	3 Nm
2.	-1 through 10-	3 Nm diagonally
3.	-1, 2, 4, 5 and 7-	Tighten an additional 90°
4.	-Arrows-	9 Nm
5.	-8, 9 and 10-	8 Nm
6.	-8, 9 and 10-	Tighten an additional 90°
7.	-3-	16 Nm
8.	-6-	20 Nm
9.	-6-	180° additional turn