Overview - Camshaft Timing Chains

Left Camshaft Timing Chain

Fig 1: Overview Of Camshaft Timing Chains

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 FROM CAMSHAFTS .
4. Camshaft Adjuster for 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. Left Camshaft Timing Chain Tensioner
   • Removing and installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
9. Drive Chain Sprocket Bearing Plate
10. Bolt
    • 8 Nm +45° turn
    • Replace
11. Left Camshaft Timing Chain Drive Sprocket
12. Mounting Pin for the Drive Chain Sprocket
    • For the left camshaft control chain
13. Bolts
    • Tightening specification

      Refer to "OVERVIEW - TIMING MECHANISM DRIVE CHAIN" -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° turn
   • 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° turn
   • Replace
4. Camshaft Adjuster for 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 "OVERVIEW - TIMING MECHANISM DRIVE CHAIN" -item  15- Bolt (See Figure).

6. Mounting Pin for the Drive Chain Sprocket
   • For the right camshaft timing chain
   • Asymmetrical version
   • Installed position. Refer to Figure
7. Right Camshaft Timing Chain Drive Sprocket
   • 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. Drive Chain Sprocket Thrust Washer
   • For the right camshaft timing chain
   • Asymmetrical version
   • Installed position. Refer to Figure
10. Right Camshaft Timing Chain Tensioner
    • Removing and installing. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .
11. Glide
12. Bolt
    • 9 Nm