Overview - Cylinder Head
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2018 Audi A3 Quattro, 2017 Audi S3, 2017 Audi A3 Quattro, 2017 Audi A3, and 2016 Audi S3. However, it is still accessible from the selected car via links, so may be relevant.
- Alignment Pin
- Quantity: 2
- Cylinder Head Gasket
- Replacing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
- Installed position: the part number faces the cylinder head
- Change the coolant and engine oil after replacing
- Perform the adaptation after replacing using the Vehicle Diagnostic Tester 01 - Engine electronics, functions , 01 - Chain length diagnostic adaptation
- Cylinder Head
- Removing and Installing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
- Checking for distortion. Refer to Fig 5.
- Do not rework the upper sealing surface
- Only replace the cylinder head and cylinder head cover together
- Change the coolant and engine oil after replacing
- Cap installation and installation position. Refer to Fig 6.
- Perform the adaptation after removing or replacing using the Vehicle Diagnostic Tester 01 - Engine electronics, functions , 01 - Chain length diagnostic adaptation
- Bolt
- Heat Shield
- Equipped on some models
- Bolt
- 9 Nm
- Bolt
- 9 Nm
- Heat Shield
- There are different versions. Refer to the Parts Information for the allocation.
- Bolt
- 9 Nm
- Bolt
- 9 Nm
- Connection
- For coolant hose
- O-Ring
- Replace after removing
- Coat with coolant
- Bolt
- O-Ring
- Replace after removing
- Coat with coolant
- Connection
- For coolant hose
- Bolt
- 9 Nm
- Mount
- For the engine cover
- Engine Lifting Eye
- Bolt
- 10 Nm +90°
- Replace after removing
- Partition Plate
- Ball Pin
- For the engine cover
- Engine Lifting Eye
- Bolt
- 10 Nm +90°
- Replace after removing
- Alignment Pin
Loosening the Cylinder Head
-- Remove the bolts -arrows-.
-- Loosen and remove the cylinder head bolts in the sequence -1 to 10-.
Cylinder Head - Tightening Specifications and Sequence
- Replace bolts that were tightened with an additional turn after removing them.
- Bolt differences:
- Bolt without collar
- Bolt with collar -arrow-
-- Tighten the bolts in the steps in the sequence shown:
| Step | Bolts | Tightening Specification/Additional Turn |
|---|---|---|
| 1. | -1 through 10- | Install all the way by hand |
| 2. | -1 through 10- | "Without the collar" 40 Nm "With the collar" 50 Nm; refer to OVERVIEW - CYLINDER HEAD - Bolt differences: for the difference |
| 3. | -1 through 10- | 90° additional turn |
| 4. | -1 through 10- | 90° additional turn |
| 5. | -arrows- | 10 Nm |
| 6. | -arrows- | 90° additional turn |
Cylinder Head, Checking for Distortion
-- Check the cylinder head at several locations for distortion using a Straight Edge - 500mm: VAS 6075 and a feeler gauge.
- Maximum permitted distortion: 0.05 mm
Cap Installation and Installation Position
-- Before removing, determine the press-in depth -a-.
-- Coat the cap -1- all around with sealant. Refer to Parts Information.
-- Position the cap -1- parallel to the cylinder block and using a suitable thrust piece (for example the socket) -2- drive in to the previously determined press-in depth -a-.