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Home >> Audi >> 2020 >> Q7 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 71 (Crankshaft, Cylinder Block Servicing (2.9L & 3.0L)) >> 13 Crankshaft, Cylinder Block >> Cylinder Block, Belt Pulley Side >> Overview - Cylinder Block, Belt Pulley Side >> Overview - Cylinder Block, Belt Pulley Side, Belt Drive Generator, 2.9L/3.0L Engine

Overview - Cylinder Block, Belt Pulley Side, Belt Drive Generator, 2.9L/3.0L Engine

WARNING: This page is about a different car, the 2022 Audi S7 and 2022 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Cylinder Block, Belt Pulley Side, Belt Drive Generator, 2.9L/3.0L Engine
GWWA13-11110Courtesy of AUDI OF AMERICA, LLC
  1. Ribbed Belt
    • Check for wear
    • Do not kink
    • Belt path. Refer to Fig 2.
    • Before removing, mark the running direction using chalk or a felt-tip pen.
    • Removing and Installing. Refer to RIBBED BELT, REMOVING AND INSTALLING .
    • When installing, make sure it is seated correctly on the belt pulleys
  2. Bolt
    • 25 Nm
  3. Cover
    • For the idler roller
  4. Idler Roller
    • For the ribbed belt
  5. Bolt
    • Tightening specification -item 4- : Bolt .
  6. Bolt
    • 8 Nm +45°
    • Replace after removing
  7. Tensioner
  8. Bolt
  9. Generator
  10. Bracket
  11. Bolt
    • Tightening Specifications and Sequence. Refer to Fig 3.
  12. Alignment Sleeves
  13. Belt Pulley
    • For the coolant pump
  14. Vibration Damper
  15. Bolt
    • 150 Nm +90°
    • Replace after removing

Generator Belt Path 

Fig 2: Generator Belt Path
GWWA13-11183Courtesy of AUDI OF AMERICA, LLC
  1. Generator
  2. Idler Roller
  3. Coolant Pump
  4. Vibration Damper
  5. Ribbed Belt Tensioner

Generator Bracket - Tightening Specifications and Sequence 

Fig 3: Generator Bracket
GWWA13-11186Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in stages as follows:

Step Bolts Tightening Specification/Additional Turn
1. -arrows- 8 Nm diagonally
2. -arrows- Turn an additional 90° in a diagonal sequence