Chain Drive, Assembly Overview

Chain drive, assembly overview

Chain drive, assembly overview:

1 - Control housing
^ Lightly oil contact surfaces of camshaft and control housing seals before installing
^ Check control housing strainer for soiling before installation

2 - 8 Nm
^ Replace

3 - Camshaft roller chain
^ Mark direction of rotation before removing (installation position)

4 - Exhaust camshaft adjuster
^ Identification: 32A
^ Only rotate engine with camshaft adjuster installed

5 - Intermediate shaft
6 - Thrust washer
^ Not installed on all engines

7 - 8 Nm
^ Insert using 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 - Seal
^ Replace if damaged or leaking

12 - Chain sprocket
13 - Chain sprocket
14 - 60 Nm plus an additional 1/4 turn (90°)
^ Replace
^ Use counter-holder tool T10069 to tighten and loosen

15 - Chain tensioner with tensioning rail
^ Before installation release locking device in chain tensioner with a small screwdriver and press tensioning plate against 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

17 - Roller chain
^ Mark direction of rotation before removing (installation position)

18 - Guide rail
^ Remove and install together with roller chain

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

23 - 60 Nm plus an additional 1/4 turn (90°)
^ Replace
^ Contact surface of wheel sensor must be dry around bolt head when assembling
^ To remove and install, counter-hold at camshaft using an open-end spanner (32 mm) Camshafts, removing and installing, removing and installing camshaft

24 - Guide rail
25 - Camshaft Adjustment Valve 1 (exhaust) N318
^ For exhaust camshaft
^ Before disconnecting, mark allocation of connector to component

26 - Camshaft Adjustment Valve 1 N205
^ For intake camshaft
^ Before disconnecting, mark allocation of connector to component

27 - Guide rail
^ Clipped in at control housing





Marking roller chains
- Mark roller 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!