Part I: Chain drive, assembly overview: Notes

1 - Control housing

• Lightly lubricate contact surfaces of oil seals before installing
• Removing and installing, refer to Camshafts, removing and installing 
• Disassembling and assembling Disassembling and assembling control housing  under Assembly overview 
• Before installing control housing strainer check for contamination Check the control housing screen for contamination  under Assembly overview 

2 - 8 Nm

• Replace

3 - Camshaft roller chain

• Mark direction of rotation before removing (installation position) Marking roller chains 
• Installing, refer to Valve timing, adjusting 

4 - Exhaust camshaft adjuster

• Identification: 32A
• Only rotate engine with camshaft adjuster installed
• Installing, refer to Valve timing, adjusting 

5 - Intermediate shaft

6 - Thrust washer

7 - 8 Nm

• Insert with locking fluid "D 000 600 A2"

8 - Tensioning rail

9 - Pivot pin, 18 Nm

10 - Chain tensioner, 40 Nm

• Only rotate engine with chain tensioner installed

11 - Oil seal

• Replace if damaged or leaking

12 - Chain sprocket

• Installing, refer to Valve timing, adjusting 

13 - Chain sprocket

• Installing, refer to Valve timing, adjusting 

14 - 60 Nm + ¹ / ₄ turn (90 ° )

• Replace
• Use counter-holder tool T10069 to tighten and loosen, refer to Valve timing, adjusting 

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
• Ground down tooth aligned with main bearing joint = TDC cyl. 1, refer to Valve timing, adjusting 

17 - Roller chain

• Mark direction of rotation before removing (installation position) Marking roller chains 
• Installing, refer to Valve timing, adjusting 

18 - Guide rail

• Remove and install together with roller chain, refer to Valve timing, adjusting 

19 - Locating pin without collar, 10 Nm

20 - 18 Nm

21 - 23 Nm

22 - Intake-camshaft adjuster

• Identification: 24E
• Only rotate engine with camshaft adjuster installed
• Installing, refer to Valve timing, adjusting 

23 - 60 Nm + ¹ / ₄ turn (90 ° )

• Replace
• Contact surface of sender wheel must be dry around bolt head when assembling
• To remove and install, counter-hold at camshaft using an open-end wrench (32 mm), refer to Camshafts, removing and installing 

24 - Guide rail

25 - Camshaft adjustment valve 1 (exhaust) N318

• For exhaust camshaft
• Before disconnecting, mark allocation of connector to component

26 - Valve 1 for camshaft adjustment N205

• For intake camshaft
• Before disconnecting, mark allocation of connector to component

27 - Guide rail

• For camshaft roller chain
• Clipped in at control housing