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Home >> Audi >> 2017 >> S7 Premium Plus >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine System (Cylinder Head & VALVETRAIN - Service Information - 4.0L - CEUC, CRDB, CTGE, CWUB, CWUC) >> Cylinder Head, VALVETRAIN >> Cylinder Head >> Overview - Cylinder Head >> Tightening Specifications

Tightening Specifications

Cylinder Head Bank 1 (Right) 

Fig 1: Cylinder Head Bank 1 Tightening Sequence (Right)
GWWA15-12128Courtesy of AUDI OF AMERICA, LLC

Cylinder Head Bank 2 (Left) 

Fig 2: Cylinder Head Bank 1 Tightening Sequence (Left)
GWWA15-12127Courtesy of AUDI OF AMERICA, LLC
NOTE:

Replace any bolts that were tightened with an additional turn.

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

Step Bolts Tightening Specification/Additional Turn
1. -1 through 10- Install all the way in by hand.
2. -1 through 10- 30 Nm
3. -1 through 10- 60 Nm
4. -1 through 10- Tighten an additional 90°
5. -1 through 10- Tighten an additional 90°
6. -Arrows- 10 Nm
7. -Arrows- Tighten an additional 90°
GWWA15-10931

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

GWWA15-0169

Resurfacing cylinder head (face grinding) is only permissible to minimum dimension -a-.