Overview - Balance Shaft Drive Chain

Fig 1: Exploded View Of Balance Shaft Drive Chain

Courtesy of AUDI OF AMERICA, LLC

1. Guide Pin
   • 20 Nm
2. Tensioning Rail
   • For the timing chain
3. Balance Shaft
   • Exhaust side
   • Lubricate the bearing with engine oil
   • Replace in pairs only. Refer to BALANCE SHAFT, REMOVING AND INSTALLING, EXHAUST SIDE .
4. Guide Pin
   • 20 Nm
5. Guide Rail
   • For the timing chain
6. Chain Tensioner
   • Replace after removing
   • 85 Nm
7. Seal
   • Not available separately, included in the delivery package -item  : Chain Tensioner
8. Cylinder Block
9. O-Ring
   • Lubricate with engine oil
10. Mounting Pin
    • Lubricate with engine oil
    • Installation position. Refer to Fig 2.
11. Intermediate Sprocket
    • The intermediate sprocket must be replaced if the bolt -item  : Bolt is loosened.
12. Thrust Washer
13. 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.
14. Guide Rail
    • For the balance shaft timing chain
15. Guide Pin
    • 20 Nm
16. Balance Shaft
    • Intake side
    • Lubricate the bearing with engine oil
    • Replace in pairs only. Refer to BALANCE SHAFT, REMOVING AND INSTALLING, EXHAUST SIDE .
17. Three Stage Chain Sprocket
    • Installation position. Refer to Figure.
18. Balance Shaft Drive Chain
    • Removing and Installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING .
    • After working on the chain drive, the adaptation must be performed using the Vehicle Diagnostic Tester ADAPTING AFTER REPLACING COMPONENTS .

Mounting Pins - Installation Position 

Fig 2: Bearing Pins Installation Position

Courtesy of AUDI OF AMERICA, LLC

• Replace and lubricate the O-Ring -1-.
• The alignment pin -arrow- for the bearing pins must engage in the hole in the cylinder block.
• Lubricate the bearing pins

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 -1- in steps: