Overview - Turbocharger, Part 2

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 9 Nm
2. O-Ring
   • Replace after removing
3. Washer
   • Installed, depending on the version
4. Nut
   • Replace after removing
   • Coat the threaded pins with hot bolt paste. Refer to the Parts Information.
   • Tightening specification and sequence. Refer to Figure.
5. Locking Plate
   • Quantity: 2
   • Replace after removing
   • Installing. Refer to Fig 2.
6. Bolt
   • 9 Nm
7. Bolt
   • 9 Nm
8. Bolt
   • 9 Nm
9. Coolant Return Line
10. Threaded Pin
    • 9 Nm
11. Nut
    • 10 Nm
12. Oil Supply Line
13. Coolant Supply Line
14. Bolt
    • 9 Nm
15. Seal
    • Replace after removing
16. Threaded Pin
    • Screw-in depth and tightening specification. Refer to Fig 1.
17. Bolt
    • 9 Nm
18. Turbocharger
    • There are different versions. Refer to the Parts Information.
    • Removing and Installing. Refer to TURBOCHARGER, REMOVING AND INSTALLING .

Check the screw-in depth of the threaded pin

Fig 1: Check the screw-in depth of the threaded pin

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the threaded pin -1- to 23 Nm.

-- Measure the dimension -a- of the sealing surface of the cylinder head to the collar on the threaded pin.

• At dimension -a- less than or equal to 2.4 mm: tightening specification 23 Nm OK
• At dimension -a- more than 2.4 mm: tightening specification 27 Nm.

Install the locking plates

Fig 2: Install the Locking Plates

Courtesy of AUDI OF AMERICA, LLC

• Pay attention to distortion of the sprockets.

The locking plates are pressed onto the nuts using the following tools:

• Pry bar
• ¹ /₂ "-Socket 14 mm
• Hammer
• Wrench - 14 mm

-- Press on the locking plates for easy accessible nuts using the ¹ /₂ "- Socket - 14mm and the hammer.

-- Press on the locking plates for difficult accessible nuts using the Wrench - 14 mm and the pry bar, at the same time support the pry bar on the turbocharger.