Overview - Balance Shaft Drive Chain

Fig 1: Balance Shaft Drive Chain Exploded View

Courtesy of AUDI OF AMERICA, LLC

1. Three Stage Chain Sprocket
   • Installation position. Refer to Figure.
2. Guide Pin
   • 20 Nm
3. Tensioning Rail
   • For balance shaft drive chains
4. Balance Shaft Drive Chain
   • Removing and Installing. Refer to BALANCE SHAFT DRIVE CHAIN, REMOVING AND INSTALLING .
5. Guide Pin
   • 20 Nm
6. Exhaust Side Balance Shaft
   • Overview. Refer to OVERVIEW - BALANCE SHAFT .
7. Chain Tensioner
   • 85 Nm
   • Replace after removing
8. Seal
   • Not available separately, included in the delivery package -item  : Chain Tensioner
9. Cylinder Block
10. Intake Side Balance Shaft
    • Overview. Refer to OVERVIEW - BALANCE SHAFT .
11. O-Ring
    • Replace after removing
    • Lubricate with engine oil
12. Mounting Pin
    • Lubricate with engine oil
    • Installation position. Refer to Fig 2.
13. Intermediate Sprocket
    • The intermediate sprocket must be replaced if the bolt -item  : Bolt is loosened.
14. Thrust Washer
15. Bolt
    • Replace after removing
    • The intermediate sprocket -item  : Intermediate Sprocket must be replaced if the bolt is loosened.
    • Tightening Specifications and Sequence. Refer to Fig 3.
16. Guide Rail
    • For balance shaft drive chains
17. Guide Pin
    • 12 Nm
18. Guide Rail
    • For the balance shaft timing chain
19. Guide Pin
    • 20 Nm

Mounting Pins - Installation Position

Fig 2: Bearing Pins Installation Position

Courtesy of AUDI OF AMERICA, LLC

-- Coat the new O-ring -1- before installing with engine oil.

• The alignment pin -arrow- for the bearing pins must engage in the hole in the cylinder block.

-- Coat the bearing pin with engine oil.

Intermediate Sprocket - Tightening Specifications and Sequence

Fig 3: Identifying Intermediate Shaft Sprocket

Courtesy of AUDI OF AMERICA, LLC

• Replace bolts that were tightened with an additional turn after removing them.

-- Tighten the bolt in steps: