Balance Shaft Timing Chain Overview

Fig 1: Balance Shaft Timing Chain Component Overview

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 9 Nm
   • Replace
2. Balance Shaft
   • Exhaust side
   • Replace after removing
   • Lubricate the bearing with engine oil
   • Removing and installing, refer to EXHAUST CAMSHAFT BALANCE SHAFT 
3. Pipe for the Balance Shaft
   • Installed position, refer to Fig 2
4. Chain Tensioner
   • 65 Nm
5. Cylinder Block
6. Balance Shaft
   • Intake side
   • Replace after removing
   • Lubricate the bearing with engine oil
   • Removing and installing, refer to INTAKE CAMSHAFT BALANCE SHAFT 
7. O-ring
   • Lubricate with engine oil
8. Mounting Pin
   • Lubricate with engine oil
   • Installed position, refer to Fig 3
9. Intermediate Shaft Sprocket
   • For the balance shaft
   • The intermediate shaft sprocket must be replaced if the bolt BALANCE SHAFT TIMING CHAIN OVERVIEW  is loosened.
10. Bolt
    • 9 Nm
    • Replace
11. Washer
12. Bolt
    • The intermediate shaft sprocket must be replaced if the bolt BALANCE SHAFT TIMING CHAIN OVERVIEW  is loosened.
    • Tightening sequence, refer to Fig 4
13. Guide Rail
    • For timing chain
14. Guide Bolt
    • 20 Nm
15. Tensioning Rail
    • For timing chain
16. Guide Bolt
    • 20 Nm
17. Timing Chain
    • Removing, refer to BALANCE SHAFT TIMING CHAIN 
18. Chain Sprocket
    • Installed position, refer to Figure
19. Guide Rail
    • For the balance shaft timing chain
20. Guide Bolt
    • 20 Nm

Fig 2: Identifying Pipe For Balance Shaft - Installation Position

Courtesy of AUDI OF AMERICA, LLC

• The pin from the balance shaft pipe must fit into the groove -arrow-

Fig 3: 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

Fig 4: Identifying Intermediate Shaft Sprocket

Courtesy of AUDI OF AMERICA, LLC

-- Tighten with a new bolt as follows:

-- Tighten to 10 Nm using a torque wrench.

-- Rotate the intermediate shaft sprocket.

The intermediate shaft sprocket must not have any play. Loosen and tighten it again if necessary.

-- Tighten to 25 Nm using a torque wrench.

-- Tighten further 90° using a rigid wrench.