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° turn
   • Replace
2. Bolt
   • 80 Nm + 90° turn
   • Replace
3. Camshaft Chain Sprocket
   • For the exhaust camshaft
   • Removing and installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING 
4. Camshaft Adjuster
   • For the intake camshaft
   • Identification "Intake"
   • Removing and installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING 
     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 CHAINS, 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 CHAINS, REMOVING FROM CAMSHAFTS 
9. Bearing Plate
   • For the drive chain sprocket
10. Bolt
    • Tightening specification -item 10-  OVERVIEW - TIMING MECHANISM DRIVE CHAIN.
11. Drive Chain Sprocket
    • For the left camshaft control chain
12. Mounting Pin
    • Left camshaft timing chain drive sprocket
13. Bolts
    • Tightening specification -item 3-  OVERVIEW - TIMING MECHANISM DRIVE CHAIN.

Right Camshaft Timing Chain

Fig 2: Identifying Right Timing Chain Overview

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 80 Nm + 90° turn
   • Replace
2. Camshaft Chain Sprocket
   • For the exhaust camshaft
   • Removing and installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING 
3. Bolt
   • 80 Nm + 90° turn
   • Replace
4. Camshaft Adjuster
   • For the intake camshaft
   • Identification "Intake"
   • Removing and installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING 
     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 -item 15-  OVERVIEW - TIMING MECHANISM DRIVE CHAIN.
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 CHAINS, 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 AND INSTALLING .
11. Glide
12. Bolt
    • 9 Nm