Timing Chains and Adjusters Assembly Overview

Timing Chains and Adjusters Assembly Overview

Note:
^ Engine is to be secured to engine and transmission holder VAS 6095 for performing assembly work.
^ If large quantities of metal particles or abraded material are detected during engine repairs, it may be an indication for a damaged crankshaft or rod bearings. To prevent further damage, perform the following steps after the repair.
^ Carefully clean oil passages
^ Replace oil check valve
^ Replace oil injection jets
^ Replace oil cooler
^ Remove and install oil filter





1. Control housing
^ Oil contact surface of sealing rings before installing
^ Check control housing strainer for contamination before installation
2. 8 Nm
^ Insert using locking fluid D 000 600 A2
3. Camshaft timing chain
^ Mark direction of rotation before removing (installation position)
4. Exhaust camshaft adjuster
^ Identification: 32A
5. Seal
^ Replace
6. Oil pump
7. 8 Nm
^ Replace
8. Tensioning rail
9. Chain tensioner, 40 Nm
^ Only rotate engine with chain tensioner installed
10. Seal
^ Replace if damaged or leaking
11. Pivot pin, 18 Nm
12. Chain sprocket
13. Chain sprocket
14. 60 Nm + 1/4 turn (90 degree)
^ Only use bolts with strength category 10.9
^ Replace
15. Chain tensioner with tensioning rail
^ Before installation release the locking device in the chain tensioner with a small screwdriver and press the tensioning plate against the chain tensioner.
^ Only rotate engine with chain tensioner installed.
16. Drive gear
^ Integral part of crankshaft
17. Timing Chain
^ Mark direction of rotation before removing (installation position)
18. Guide rail
^ Remove and install together with timing chain
19. Locating pin without collar, 10 Nm
20. 10 Nm
21. 23 Nm
22. 60 Nm + 1/4 turn (90 degree)
^ Replace
^ Contact surface of sensor wheel at bolt head must be dry when installing
^ To remove and install, counter-hold at camshaft using an open-end wrench (27 mm).
23. Guide rail
24. Drive gear
25. Intake camshaft adjuster
^ Identification: 24E
26. Camshaft adjustment valve 1 (exhaust) N318
^ For exhaust camshaft
^ Before disconnecting, mark allocation of connector to component
27. Camshaft adjustment valve 1 N205
^ For intake camshaft
^ Before disconnecting, mark allocation of connector to component
28. Guide rail
^ clipped in at control housing





Identifying the Timing Chain
- Mark the timing chains before removing (e.g. with paint, arrow pointing in direction of rotation).

Note:
^ Do not mark chain using a center punch or similar means!