Balance Shaft, Intake Side

Balance Shaft, Intake Side

Special tools, testers and auxiliary items required

• Torque wrench 5-50 Nm (VAG 1331)

CAUTION!
Always replace the intermediate shaft sprocket. Otherwise the backlash will not adjust itself and it could result in engine damage. The new intermediate shaft sprocket has an anti-friction coating that wears off after a short period of use, which automatically adjusts the backlash.

Removing

- Remove the coolant pump toothed belt. Refer to --> [ Coolant Pump Toothed Belt ] Coolant Pump Toothed Belt.

- Remove upper timing chain cover. Refer to --> [ Upper Timing Chain Cover ] Upper Timing Chain Cover.

- Remove the lower timing chain cover. Refer to--> [ Lower Timing Chain Cover ] Lower Timing Chain Cover.

- Remove the camshaft timing chain. Refer to --> [ Camshaft Timing Chain ] Camshaft Timing Chain.

- Remove the balance shaft timing chain. Refer to --> [ Balance Shaft Timing Chain ] Balance Shaft Timing Chain.

- Remove the intermediate shaft sprocket bolt - 1 - and sprocket.





- Remove the intake side balance shaft bolt - 2 - and shaft.





Installing

• Tightening specifications, refer to --> [ Balance Shaft Timing Chain Assembly Overview ] Balance Shaft Timing Chain Assembly Overview.

- Lubricate the balance shaft bearing with engine oil.

- Install the intake side balance shaft.

- Replace the O-ring - 1 - and lubricate with engine oil.





- Lubricate the mounting pin with engine oil and insert it. The alignment pin - arrow - for the mounting pin must engage in the hole in the cylinder block.

- Mark the tooth face on the intermediate shaft sprocket - arrows -.





- Install the intermediate shaft sprocket; the marking on the balance shaft must be between the markings on the tooth faces.

- Tighten the intermediate shaft sprocket bolt - 1 -:





• Tightening specifications, refer to --> [ Intermediate Shaft Sprocket Bolt Tightening Specification ] Balance Shaft Timing Chain Assembly Overview.

- Check the markings on the intermediate shaft and balance shafts - arrow -.

• Due to the ratio, the marking align only in every 7th turn.

The rest of the installation is basically a reverse of the removal sequence; when doing this, note the following:

- Replace the coolant pump drive seal. Refer to --> [ Coolant Pump Drive Gear Seal ] Coolant Pump Drive Gear Seal.