Overview - Camshaft Timing Chains

Left Camshaft Timing Chain

Fig 1: Camshaft Timing Chains Overview

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 80 Nm +90°
   • Replace
2. Bolt
   • 80 Nm +90°
   • Replace
3. Camshaft Chain Sprocket
   • For the exhaust camshaft
   • Removing and installing, refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
4. Camshaft Adjuster
   • For the intake camshaft
   • Identification "Intake"
   • Removing and installing, refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
     NOTE:

     Depending on the version the camshaft adjuster has three or four notches. The illustration shows a camshaft adjuster with four notches.

5. Left Camshaft Timing Chain
   • Mark the running direction with paint for reinstallation
   • Remove from the camshafts, refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
   • Removing and installing, refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING .
6. Bolt
   • 9 Nm
7. Glide
8. Chain Tensioner
   • For the left camshaft control chain
   • Removing and installing, refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
9. Bearing Plate
   • For the drive chain sprocket
10. Bolt
    • Tightening specification, refer to -item  10- Bolt (See Figure).
11. Drive Chain Sprocket
    • For the left camshaft control chain
12. Mounting Pin
    • Left camshaft timing chain drive sprocket
13. Bolts
    • Tightening specification, refer to -item  3- Bolt (See Figure).

Right Camshaft Timing Chain

Fig 2: Identifying Right Timing Chain Overview

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 80 Nm +90°
   • Replace
2. Camshaft Chain Sprocket
   • For the exhaust camshaft
   • Removing and installing, refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
3. Bolt
   • 80 Nm +90°
   • Replace
4. Camshaft Adjuster
   • For the intake camshaft
   • Identification "Intake"
   • Removing and installing, refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
     NOTE:

     Depending on the version the camshaft adjuster has three or four notches. The illustration shows a camshaft adjuster with four notches.

5. Bolt
   • Tightening specification, refer to -item  15- Bolt (See Figure).
6. Mounting Pin
   • For the right camshaft timing chain drive sprocket
   • Asymmetrical version
   • Installed position, refer to Figure
7. Drive Chain Sprocket
   • For the right camshaft timing chain
   • Installed position, refer to Figure
8. Right Camshaft Timing Chain
   • Mark the running direction with paint for reinstallation
   • Remove from the camshafts, refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
   • Removing and installing, refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING .
9. Thrust Washer
   • For the right camshaft timing chain drive sprocket
   • Asymmetrical version
   • Installed position, refer to Figure
10. Chain Tensioner
    • For the right camshaft timing chain
    • Removing and installing, refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
11. Glide
12. Bolt
    • 9 Nm