Overview - Balance Shaft Drive Chain

WARNING: This page is about a different car, the 2023 Volkswagen Atlas. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

After performing work on the chain drive the adaptation value in the engine control module must be adapted. To do so, turn on the ignition and select the following menu items on the Vehicle Diagnostic Tester:

Engine control module, functions

0001 - Adaptation after repair work on chain drive

Fig 1: Balance Shaft Drive Chain

Courtesy of AUDI OF AMERICA, LLC

Guide Pin
- 20 Nm
Tensioning Rail
- For the timing chain
Balance Shaft
- Exhaust side
- Must be replaced after removing
- Lubricate the bearing with engine oil
- Replacing. Refer to EXHAUST SIDE BALANCE SHAFT, REMOVING AND INSTALLING .
Guide Pin
- 20 Nm
Guide Rail
- For the timing chain
Chain Tensioner
- 85 Nm
- Install with locking fluid. Refer to the => Parts Information.
Seal
Cylinder Block
O-Ring
- Coat with engine oil
Mounting Pin
- Lubricate with engine oil
- Installation position. Refer to Fig 2.
Intermediate Sprocket
- The intermediate sprocket must be replaced if the bolt OVERVIEW - BALANCE SHAFT DRIVE CHAIN => List Item:Bolt is loosened.
Thrust Washer
Bolt
- Replace
- The intermediate sprocket OVERVIEW - BALANCE SHAFT DRIVE CHAIN => List Item:Intermediate Sprocket must be replaced if the bolt is loosened.
- Tightening sequence. Refer to Fig 3.
Guide Rail
- For the balance shaft timing chain
Guide Pin
- 20 Nm
Balance Shaft
- Intake side
- Must be replaced after removing
- Lubricate the bearing with engine oil
- Replacing. Refer to INTAKE SIDE BALANCE SHAFT, REMOVING AND INSTALLING .
Three Stage Chain Sprocket
- Installation position. Refer to Figure.
Balance Shaft Drive Chain
- Removing and Installing. Refer to BALANCE SHAFT DRIVE CHAIN, REMOVING AND INSTALLING .

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 sequence

Fig 3: Identifying Intermediate Shaft Sprocket

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Always replace the intermediate sprocket. Otherwise the backlash will not adjust itself and it could result in engine damage.

The new intermediate sprocket has an anti-friction coating that wears off after a short period of use, which automatically adjusts the backlash.

-- Tighten with a new bolt as follows:

-- Partially tighten to 10 Nm using a torque wrench.

-- Turn the intermediate sprocket.

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

-- Tighten to 25 Nm using a torque wrench.

-- Turn another 90° using a rigid wrench.