Timing Components: Locations

Toothed belt drive, assembly overview

Toothed Belt Drive, Assembly Overview:

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

8 - 45 Nm

9 - Exhaust camshaft, toothed belt gear
^ For cylinder bank 1 (right) 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

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.

32 - Central bolt, 200 Nm plus an additional 180 ° (1/2 turn)
^ Always replace
^ Do not oil additionally
^ Use T40026 locking pin when loosening or tightening
^ Thread in T40026 locking pin

33 - Toothed belt tensioner

34 - 10 Nm