Overview - Camshaft Timing Chains

Cylinder Bank 1 (Right) Camshaft Timing Chain 

Fig 1: Exploded View Of Cylinder Bank 1 (Right) Camshaft Timing Chain

Courtesy of AUDI OF AMERICA, LLC

1. Guide Pin
   • 5 Nm +45°
   • Replace after removing.
2. Guide Rail
3. Gear
   • With the chain sprocket for the camshaft timing chain
4. Camshaft Timing Chain
   • Removing from the camshafts. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
   • Do not separate from the tensioning rail. Refer to -item 5-  OVERVIEW - CAMSHAFT TIMING CHAINS
   • Removing and Installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING .
5. Tensioning Rail
   • Do not separate from the camshaft timing chain -item 4-  OVERVIEW - CAMSHAFT TIMING CHAINS
6. Mounting Pin
   • 23 Nm
7. Bolt
   • 9 Nm
8. Chain Tensioner
   • Removing and Installing. Refer to CHAIN TENSIONER, REMOVING AND INSTALLING .
9. Seal
   • Replace after removing.
10. Control Valve
    • For the camshaft adjuster
    • Tightening Specifications and Sequence. Refer to Installing .
11. O-Ring
    • Replace after removing.
12. Camshaft Adjuster
    • For the exhaust camshaft
    • Allocation.
    • After removal replace the friction disc (diamond disc) -item 13-  OVERVIEW - CAMSHAFT TIMING CHAINS
    • Removing and Installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
13. Friction Disc (Diamond Disc)
    • Replace after removing.
    • For the connection security between the camshaft adjuster and camshaft end
    • Bring the new friction disc (diamond disc) without kinking into its installation position
14. Camshaft Adjuster
    • For the intake camshaft
    • Allocation.
    • After removal replace the friction disc (diamond disc) -item 15-  OVERVIEW - CAMSHAFT TIMING CHAINS
    • Removing and Installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
15. Friction Disc (Diamond Disc)
    • Replace after removing.
    • For the connection security between the camshaft adjuster and camshaft end
    • Bring the new friction disc (diamond disc) without kinking into its installation position
16. O-Ring
    • Replace after removing.
17. Control Valve
    • For the camshaft adjuster
    • Tightening Specifications and Sequence. Refer to Installing .
18. Gliding Piece
    • Replace after removing.
19. Guide Pin
    • 5 Nm +45°
    • Replace after removing.
20. Guide Pin
    • 5 Nm +45°
    • Replace after removing.

Cylinder Bank 2 (Left) Camshaft Timing Chain

Fig 2: Exploded View Of Cylinder Bank 2 (Left) Camshaft Timing Chain

Courtesy of AUDI OF AMERICA, LLC

1. Mounting Pin
   • 23 Nm
2. Tensioning Rail
3. Camshaft Timing Chain
   • Mark the running direction with paint for reinstallation
   • Removing from the camshafts. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
   • Removing and Installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING .
4. Chain Tensioner
   • Removing and Installing. Refer to CHAIN TENSIONER, REMOVING AND INSTALLING .
5. Bolt
   • 9 Nm
6. Seal
   • Replace after removing.
7. Gliding Piece
   • Replace after removing.
8. Control Valve
   • For the camshaft adjuster
   • Tightening Specifications and Sequence. Refer to Installing .
9. O-Ring
   • Replace after removing.
10. Camshaft Adjuster
    • For the intake camshaft
    • Allocation.
    • After removal replace the friction disc (diamond disc) -item 11-  OVERVIEW - CAMSHAFT TIMING CHAINS
    • Removing and Installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
11. Friction Disc (Diamond Disc)
    • Replace after removing.
    • For the connection security between the camshaft adjuster and camshaft end
    • Bring the new friction disc (diamond disc) without kinking into its installation position
12. Friction Disc (Diamond Disc)
    • Replace after removing.
    • For the connection security between the camshaft adjuster and camshaft end
    • Bring the new friction disc (diamond disc) without kinking into its installation position
13. Camshaft Adjuster
    • For the exhaust camshaft
    • Allocation.
    • After removal replace the friction disc (diamond disc) -item 12-  OVERVIEW - CAMSHAFT TIMING CHAINS
    • Removing and Installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
14. O-Ring
    • Replace after removing.
15. Control Valve
    • For the camshaft adjuster
    • Tightening Specifications and Sequence. Refer to Installing .
16. Guide Rail
17. Bolt
    • 9 Nm
18. Gear
    • With the chain sprocket for the camshaft timing chain