Overview - Cylinder Head: Notes

WARNING: This page is about a different car, the 2016 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The cylinder head for cylinder bank 2 (left) is shown in the illustration.

Fig 1: Exploded View Of Cylinder Head

Courtesy of AUDI OF AMERICA, LLC

Cylinder Head Gasket
- Always replace:
  - Vehicles with a turbocharger..
- Identification. Refer to appropriate service information.
- Installed position: the part number faces the cylinder head
- Change the coolant and engine oil after replacing
Cylinder Head
- Only set the removed cylinder head down on a foam pad. Otherwise the glow plugs can be damaged.
- Removing:
  - Vehicles with a turbocharger.
- Installing. Refer to CYLINDER HEAD, INSTALLING, ALL ENGINES .
- Check for distortion. Refer to appropriate service information.
- It is not permitted to re-work the cylinder heads on TDI engines
- Change the coolant and engine oil after replacing
Bolt
- 23 Nm
Bracket
Engine Lifting Eye
Bolt
- 23 Nm
O-rings
- Always replace
Banjo Bolt
- Tightening specification -Item 13- OVERVIEW - COOLANT PIPES .
Coolant Lines
Bolt
- Tightening specification -Item 15- OVERVIEW - COOLANT PIPES .
Banjo Bolt
- Tightening specification -Item 16- OVERVIEW - COOLANT PIPES .
O-rings
- Always replace
Bolt
- 23 Nm
Engine Lifting Eye
Bolt
- Tightening specification and sequence. Refer to OVERVIEW - CYLINDER HEAD .
- Always replace
- Loosen the cylinder head bolts in the sequence -1 to 8-.

Courtesy of AUDI OF AMERICA, LLC

-- Check the cylinder head at several locations for distortion using a Straight Edge - 500mm :VAS6075 and a feeler gauge.

Maximum permissible distortion: 0.1 mm.

NOTE:

It is not permitted to re-work the cylinder heads on TDI engines

Courtesy of AUDI OF AMERICA, LLC

Part number
Holes

NOTE:

Depending on piston projection, varying cylinder head gasket thicknesses can be installed. Refer to PISTON PROJECTION, MEASURING AT TOP DEAD CENTER (TDC) . If replacing the cylinder head gasket, make sure the new cylinder head gasket with the same identification.

The cylinder head gaskets for the left and right cylinder head cannot be interchanged because they each have a different shape.