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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (3.0L - Cylinder Head & VALVETRAIN - Engine Code: CATA) >> 15 Cylinder Head, VALVETRAIN >> Timing Chain Guards >> Timing Chain Covers Overview

Timing Chain Covers Overview

WARNING: This page is about a different car, the 2011 Audi Q7, 2010 Audi Q7, and 2009 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Vehicles built through 05.10 

Fig 1: Timing Chain Covers Overview (Vehicles Built Through 05.10)
GWWA15-10565Courtesy of AUDI OF AMERICA, LLC
  1. Crankshaft Shaft Seal, Transmission Side
  2. Timing Chain Cover Lower Section
  3. Alignment Sleeve
    • Quantity: 2
  4. Bolt
    • Replace
    • Tightening specification and sequence, refer to Fig 3.
  5. Bolt
    • 9 Nm
  6. Cover
  7. O-Ring
    • Replace
  8. Bolt
    • Replace
    • Tightening specification and sequence, refer to Fig 3.
  9. Left Timing Chain Cover
  10. Seal
    • Replace
  11. Bolt
    • Replace
    • Tightening specification and sequence, refer to Fig 4.
  12. Bolt
    • Tightening specification: 9 Nm. .
  13. Vacuum Pump
  14. O-Rings
    • Replace
  15. Right Timing Chain Cover
  16. Seal
    • Replace
  17. Bolt
    • Replace
    • Tightening specification and sequence, refer to Fig 4.
  18. Alignment Sleeve
    • Quantity: 2
  19. Seal
    • Quantity: 2
  20. Bolt
    • Tightening specification and sequence, refer to Fig 5.

Vehicles built from 06.10 

Fig 2: Timing Chain Cover Overview (Vehicles Built From 06.10)
GWWA15-11064Courtesy of AUDI OF AMERICA, LLC
  1. Bolt
    • Tightening specification and sequence, refer to Fig 5.
  2. Sensor Wheel
    • For the Engine Speed Sensor -G28-.
  3. Crankshaft Shaft Seal, Transmission Side
  4. Timing Chain Cover Lower Section
  5. Alignment Sleeve
    • Quantity: 2
  6. Bolt
    • Replace
    • Tightening specification and sequence, refer to Fig 3.
  7. Bolt
    • 9 Nm
  8. Cover
  9. O-Ring
    • Replace
  10. Bolt
    • Replace
    • Tightening specification and sequence, refer to Fig 3.
  11. Left Timing Chain Cover
  12. Seal
    • Replace
  13. Bolt
    • Replace
    • Tightening specification and sequence, refer to Fig 4.
  14. Bolt
    • Tightening specification: 9 Nm. .
  15. Vacuum Pump
  16. O-Rings
    • Replace
  17. Right Timing Chain Cover
  18. Seal
    • Replace
  19. Bolt
    • Replace
    • Tightening specification and sequence, refer to Fig 4.
  20. Alignment Sleeve
    • Quantity: 2
  21. Seal
    • Quantity: 2
  22. Cover
    • For the starter
  23. Cover
    • For the Engine Speed Sensor -G28-
  24. Bolt
  25. Engine Speed Sensor -G28-
    • Removing and Installing.

Left Timing Chain Cover Tightening Sequence And Torque Specification: 

Fig 3: Left Timing Chain Cover Bolts
GWWA15-11174Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in 4 steps as follows:

Stage Bolts Tightening Specification
1. -1- 3 Nm
2. -2- 9 Nm
3. -1- 9 Nm
4. -3- 9 Nm diagonally

Right Timing Chain Cover Tightening Sequence And Torque Specification: 

Fig 4: Right Timing Chain CoverBolts
GWWA15-11175Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in 4 steps as follows:

Stage Bolts Tightening Specification
1. -1- 3 Nm
2. -2- 9 Nm
3. -1- 9 Nm
4. -3- 9 Nm diagonally

Lower Timing Chain Cover Tightening Sequence And Torque Specification: 

Fig 5: Lower Timing Chain Cover Bolts
GWWA13-10000Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts in three steps and in the sequence shown:

Stage Bolts Tightening Specification
1. -1 to 9- 5 Nm from the inside toward the outside and diagonally
2. -1 to 7- 9 Nm from the inside toward the outside and diagonally
3. -8- and -9- 23 Nm