Overview - Camshaft Timing Chains

WARNING: This page is about a different car, the 2018 Audi Q3 Quattro, 2018 Audi Q3, 2017 Audi Q3 Quattro, and 2017 Audi Q3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Camshaft Timing Chains Exploded View

Courtesy of AUDI OF AMERICA, LLC

Bolt
- 9 Nm
Chain Tensioner
- Is under tension
- Remove the Locking Pin:T40011 before removing
Timing Chain Tensioning Rail
Guide Pin
- 20 Nm
Bolt
- Tightening Specifications and Sequence. Refer to Fig 2.
Control Valve
- 35 Nm
- Left-hand thread
- Depending on the version, remove with either the Assembly Tool :T10352 or Assembly Tool :T10352/1A
Bolt
- Tightening Specifications and Sequence. Refer to Fig 2.
- Always replace after removing.
Washer
Bearing Bracket
- Removing and installing. Refer to BEARING BRACKET, REMOVING AND INSTALLING .
Camshaft Timing Chain Guide Rail
Camshaft Housing
Camshaft Timing Chain
- Before removing, mark the running direction with paint
Camshaft Timing Chain Guide Rail
Guide Pin
- 20 Nm
Three Stage Chain Sprocket
- Crankshaft
- Installation position. Refer to Fig 3.

Fig 2: Bearing Bracket Tightening Sequence

Replace the bolts that were tightened with an additional turn after removing them.

-- Tighten the bolts in the steps shown in the sequence:

Step	Bolts	Tightening Specification/Additional Turn
1.	-1 to 7-	Install by hand all the way
2.	-1 to 6-	9 Nm
3.	-7-	M6: pretension to 8 Nm M8: pretension to 20 Nm
4.	-7-	90° additional turn

Fig 3: Chain Sprocket Crankshaft

Both surfaces -arrows- must align.