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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (4.2L - Crankshaft & Cylinder Block - Engine Code: Bar) >> 13 Crankshaft, Cylinder Block >> Description And Operation >> Generator Ribbed Belt Drive Overview

Generator Ribbed Belt Drive 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: Generator Ribbed Belt Drive, Assembly Overview
GWWA13-10278Courtesy of AUDI OF AMERICA, LLC
  1. Bolt
    • 22 Nm
  2. Tensioning Device for Ribbed Belt
  3. Ribbed Belt
    • Check for wear
    • Do not kink
    • Before removing, mark direction of rotation using chalk or felt-tip marker
    • Removal and installation, refer to RIBBED BELT 
    • When installing, make sure it is seated correctly on the pulleys
  4. Cap
  5. Bolt
    • Tightening specifications: 65 Nm.
  6. Generator
    • Removal and installation, refer to GENERATOR
  7. Bolt
    • M8 - 22 Nm
    • M10 - 46 Nm
  8. Alignment Bushing
    • For generator bracket
    • 2 pieces
  9. Generator Bracket
    • Illustration does not correspond to version in vehicle
  10. Bolt
    • 9 Nm
  11. Bracket
    • For idler pulley
  12. Idler Roller for Ribbed Belt
  13. Bolt
    • 22 Nm
  14. Vibration Damper
  15. Bolt
    • Replace
    • Tightening order, refer to Fig 2
  16. Alignment Bushing
    • 2 pieces
  17. Bracket
    • For ribbed belt tensioner
  18. Bolt
    • Note bolt lengths
    • 9 Nm
Fig 2: Identifying Mounting Bolts On Vibration Damper
GWWA13-10305Courtesy of AUDI OF AMERICA, LLC

-- Tighten bolts -arrow- in diagonal sequence in 3 stages as follows:

-- Tighten the bolts to 15 Nm.

-- Tighten the bolts to 22 Nm.

-- Tighten the bolts an additional 90°.