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Home >> Audi >> 2021 >> S5 Premium Plus, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 491 (Cylinder Head, VALVETRAIN (Servicing 8-Cylinder 4.0L 4V TFSI Engine Ea825)) >> 15 Cylinder Head, VALVETRAIN >> Timing Chain Cover >> Overview - Timing Chain Cover

Overview - Timing Chain Cover

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Fig 1: Exploded View Of Timing Chain Cover
GWWA15-12022Courtesy of AUDI OF AMERICA, LLC
  1. Bolt
    • Replace after removing
    • Tightening Specifications and Sequence. Refer to Fig 4.
  2. Seal
  3. Alignment Sleeve
    • Quantity: 2
  4. Lower Timing Chain Cover
  5. Bank 2 Cylinder Head Gasket (Left)
  6. Cylinder Bank 2 Upper Timing Chain Cover (Left)
  7. Bolt
    • Tightening Specifications and Sequence. Refer to Fig 3.
  8. Alignment Sleeve
    • Quantity: 2
  9. Sleeve
    • For the transmission bolted connections
    • Not required for reinstallation
  10. Bolt
    • 9 Nm
  11. Heat Shield
  12. Exhaust Camshaft Adjustment Valve
    • Exhaust Camshaft Adjustment Valve 1 -N318- Cylinder Bank 1 (right)
    • Exhaust Camshaft Adjustment Valve 2 -N319- Cylinder Bank 2 (left)
  13. Seal
    • Replace after removing
  14. Alignment Sleeve
    • Quantity: 2
  15. Cylinder Bank 1 Upper Timing Chain Cover (Right)
  16. Bolt
    • Tightening Specifications and Sequence. Refer to Fig 2.
  17. Bank 1 Cylinder Head Gasket (Right)
  18. Alignment Sleeve
    • Quantity: 2
  19. Seal
    • Replace after removing
  20. Intake Camshaft Adjustment Valve
    • Camshaft Adjustment Valve 1 -N205- Cylinder Bank 1 (right)
    • Camshaft Adjustment Valve 2 -N208- Cylinder Bank 2 (left)
  21. Bolt
    • 9 Nm

Cylinder Bank 1 Timing Chain Cover (Right) - Tightening Specification and Sequence

Fig 2: Cylinder Bank 1 Timing Chain Cover (Right) - Tightening Sequence
GWWA15-11164Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts -1 to 8- to 9 Nm in the sequence shown.

Cylinder Bank 2 Timing Chain Cover (Left) - Tightening Specification and Sequence

Fig 3: Cylinder Bank 2 Timing Chain Cover (Left) - Tightening Sequence
GWWA15-11978Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts -1 to 8- to 9 Nm in the sequence shown.

Lower timing chain cover, tightening specifications and sequence

Fig 4: Lower Timing Chain Cover, Tightening Sequence
GWWA15-12164Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in steps as shown:

Step Bolts Tightening Specifications
1. -arrows- 3 Nm
2. -1 to 17- 3 Nm
3. -arrows- 10 Nm
4. -1 to 17- 9 Nm
5. -arrows- 25°