Procedures

Chain Drive Assembly Overview






1. Control housing
Lubricate contact surfaces of oil seal when installing
Removing and installing, refer to "Camshaft" Service and Repair
Disassembling and assembling, refer to "Disassembling and Assembling Control Housing" Service and Repair
Check screen of control housing for contamination before installing, refer to "Checking Control Housing Screen for Contamination" Service and Repair

2. Bolt
8 Nm
Replace

3. Camshaft roller chain
Mark direction of rotation before removing (installation position), refer to "Marking Roller Chains"
Installing, refer to "Valve Timing, Installing and Adjusting" Valve Timing, Installing and Adjusting

4. Exhaust camshaft timing adjuster
Marking: 32A
Turn engine over only when camshaft timing adjuster is installed
Check camshaft timing adjustment, refer to "Camshaft, Checking Adjustment" Adjustments
Installing, refer to "Valve Timing, Installing and Adjusting" Valve Timing, Installing and Adjusting

5. Intermediate shaft
6. Thrust washer

7. 8 Nm
Insert with Locking Compound -D 000 600 A2-

8. Tensioning plate
For camshaft roller chain

9. Mounting stud, 10 Nm
For tensioning plate

10. Chain tensioner, 40 Nm
For camshaft roller chain
Turn engine over only when chain tensioner is installed

11. Seal
Replace if damaged or leaking

12. Chain sprocket
For roller chain
Installing, refer to "Valve Timing, Installing and Adjusting" Valve Timing, Installing and Adjusting

13. Chain sprocket
For camshaft roller chain
Installing, refer to "Valve Timing, Installing and Adjusting" Valve Timing, Installing and Adjusting

14. 60 Nm plus an additional 1/4 turn (90�)
Replace
Use Counter support -T10069- to loosen and tighten, refer to "Valve Timing, Installing and Adjusting" Valve Timing, Installing and Adjusting

15. Chain tensioner with tensioning rail
For roller chain
Before installation release the locking device in the chain tensioner with a small screwdriver and press the tensioning plate against the chain tensioner
Turn engine over only when chain tensioner is installed

16. Drive sprocket
Integral part of crankshaft
Ground down tooth aligned with main bearing joint = TDC cyl. 1, refer to Valve Timing, Installing and Adjusting Valve Timing, Installing and Adjusting

17. Roller chain
Mark direction of rotation before removing (installation position), refer to Marking Roller Chains
Installing, refer to "Valve Timing, Installing and Adjusting" Valve Timing, Installing and Adjusting

18. Guide rail
For roller chain
Remove and install together with roller chain, refer to "Valve Timing, Installing and Adjusting" Valve Timing, Installing and Adjusting

19. Stud without collar, 10 Nm
For guide rail

20. 10 Nm
For guide rail

21. 23 Nm
For guide rail

22. Intake camshaft timing adjuster
Marking: 24E
Turn engine over only when camshaft timing adjuster is installed
Check camshaft timing adjustment, refer to "Camshaft, Checking Adjustment" Adjustments
Installing, refer to "Valve Timing, Installing and Adjusting" Valve Timing, Installing and Adjusting

23. 60 Nm plus additional 1/4 turn (90�) further
Replace
Contact surface of sensor wheel on bolt head must be dry for assembly
To remove and install, use a 32 mm open jaw spanner on camshaft to counter support, refer to "Camshaft" Service and Repair

24. Guide rail
For camshaft roller chain

25. Camshaft adjustment valve 1 (exhaust) -N318-
Check camshaft timing adjustment, refer to "Camshaft, Checking Adjustment" Adjustments
Mark connector and component before pulling connector off

26. Valve 1 for camshaft adjustment -N205-
For intake camshaft
Check camshaft timing adjustment, refer to "Camshaft, Checking Adjustment" Adjustments
Mark connector and component before pulling connector off

27. Guide rail
For camshaft roller chain
Clipped into control housing

Marking Roller Chains






- Mark roller chains before removing (for example with paint, -arrow- pointing in direction of rotation)

Note: Do not mark chain with a punched mark, notch or similar!


To Loosen and Tighten Securing Bolt, Hold Vibration Damper with Counter Support -T10069-






Note:
Vibration damper securing bolt must be replaced
Tighten securing bolt with torque wrench (150 to 800 Nm) -VAG 1601-