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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> External Pages >> Different car >> Section 50 (4.2L - Cylinder Head & VALVETRAIN - Engine Code: Bar) >> 15 Cylinder Head, VALVETRAIN >> Description And Operation >> Timing Mechanism Drive Chain Overview

Timing Mechanism Drive Chain Overview

WARNING: This page is about a different car, the 2010 Audi Q7, 2009 Audi Q7, 2008 Audi Q7, and 2007 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Timing Mechanism Drive Chain, Assembly Overview
GWWA13-10348Courtesy of AUDI OF AMERICA, LLC
  1. Guide Rail
  2. Bolt
    • 17 Nm plus an additional 90° turn
    • Replace
  3. Bolt
  4. Thrust Washer for Drive Sprocket
  5. Drive Sprocket for Left Timing Chain
  6. Bolt
    • 17 Nm plus an additional 90° turn
    • Replace
  7. Power Take-Off Drive Chain
  8. Guide rail
  9. Bolt
    • 17 Nm plus an additional 90° turn
    • Replace
  10. Bolt
  11. Mounting Bracket for Drive Sprocket
    • For right camshaft timing chain
  12. Thrust Washer
  13. Drive Sprocket for Right Timing Chain
  14. Pivot Pin for Drive Sprocket
    • Asymmetrical version
    • Installed location, refer to Figure
  15. Bolt
  16. O-ring
    • Replace
  17. Chain Tensioner
  18. Bolt
    • 5 Nm plus an additional 90° turn
    • Replace
  19. Crankshaft
  20. Bolt
    • 17 Nm plus an additional 90° turn
    • Replace