Timing Components: Service and Repair

Toothed belt drive

Note: Before removing toothed belt, note direction of rotation with chalk or felt-tip marker. Reversing the direction of rotation of a run-in belt can destroy the belt.

1. 45 Nm
^ Self-locking
^ Always replace
2. Washer
3. 45 Nm
4. Tensioner roller
5. Tensioning lever
^ Insert shim item 6 -
6. Washer
^ for tensioner lever
7. Toothed belt
^ Before removing, note direction of rotation using chalk or felt-tip marker
^ Check for wear
^ Removing, Refer to Timing Belt, Service and Repair.
^ Install (adjust timing), Refer to Timing Belt, Service and Repair.
8. 45 Nm
9. Exhaust camshaft, toothed belt gear
^ for cylinder bank 1 fright)
^ with vibration damper with camshaft adjuster
^ Identification " Exhaust"
10. Intake camshaft, toothed belt gear
^ for cylinder bank 1 (right)
^ with camshaft adjuster
^ Identification " Intake"
11. 10 Nm
^ Self-locking
^ Always replace
12. Bracket for idler roller
13. 10 Nm
^ Self-locking
^ Always replace
14. Toothed belt guard, rear right
15. Idler roller
16. 10 Nm
17. 10 Nm
18. Mechanical coolant pump
^ removing and installing, Refer to Water Pump, Service and Repair.
19. Gasket
^ Always replace
20. Intake camshaft, toothed belt gear
^ for cylinder bank 2 (left)
^ with camshaft adjuster
^ Identification "Intake"
21. Toothed belt guard, rear left
22. 10 Nm
^ Self-locking
^ Always replace
23. Exhaust camshaft, toothed belt gear
^ for cylinder bank 2 (left)
^ with vibration damper with camshaft adjuster
^ Identification " Exhaust"
24. 100 Nm
^ Use T40030 camshaft adjuster gauge when loosening or tightening
25. O-ring
^ Always replace
26. Cap
27. Snap ring
28. Diamond disc
^ for toothed belt gear
^ Replace after removing toothed belt
29. Eccentric pulley
30. 45 Nm
31. Toothed belt gear for crankshaft
^ Replace diamond disc item 28 after removal
^ Contact surface between toothed belt gear, diamond disc and crankshaft must be free of oil.
^ Installation only possible in one position
^ Version dependent with/without thrust washer. Observe note, Refer to Harmonic Balancer - Crankshaft Pulley, Service and Repair.
32. Turn central lock 200 Nm + 180° (1/2 additional turn)
^ Always replace
^ Do not oil additionally
^ Use T40026 locking pin when loosening or tightening
^ Thread in T40026 locking pin, Refer to Timing Belt, Service and Repair.
33. Toothed belt tensioner
34. 10 Nm