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Timing Chain Component Overview






Timing Chain Component Overview






1 Control Housing

Removal and installation, refer to => [ Camshafts ] Service and Repair

Disassembling and assembling, refer to => [ Disassembling and Assembling Control Housing ] Valvetrain Component Overview

Check screen for dirt, refer to => [ Control Housing Screen, Cleaning ] Valvetrain Component Overview

Lightly lubricate contact surfaces of oil seals before installing

2 Bolt

Replace

8 Nm

3 Camshaft Timing Chain

Before removing, mark direction of rotation with paint, refer to => [ Identify Timing Chain Direction of Rotation ]

Remove from camshafts, refer to => [ Camshaft Timing Chain ] Camshaft Timing Chain

Removal and installation, refer to => [ Timing Mechanism Drive Chain and Camshaft Timing Chain ] Timing Mechanism Drive Chain and Camshaft Timing Chain

4 Camshaft Adjuster, Exhaust Side

Identification: "32A"

Removal and installation, refer to => [ Camshaft Timing Chain ] Camshaft Timing Chain

5 Intermediate Shaft

6 Thrust Washer

7 Bolt

Insert with locking compound; Locking compound.

8 Nm

8 Timing Chain Tensioning Rail

Remove to remove and install timing chain upper and lower covers

9 Mounting Pin

10 Camshaft Timing Chain Tensioner

Removal and installation, refer to => [ Camshaft Timing Chain ] Camshaft Timing Chain

40 Nm

11 Seal

Replace if leaking or damaged

12 Timing Mechanism Drive Chain Sprocket

Removal and installation, refer to => [ Timing Mechanism Drive Chain and Camshaft Timing Chain ] Timing Mechanism Drive Chain and Camshaft Timing Chain

13 Camshaft Timing Chain Sprocket

Removal and installation, refer to => [ Timing Mechanism Drive Chain and Camshaft Timing Chain ] Timing Mechanism Drive Chain and Camshaft Timing Chain

14 Bolt

Use Counterhold (T10069) on vibration damper to loosen and tighten

Replace

60 Nm plus an additional 90° (1/4) turn.

15 Chain Tensioner with Tensioning Rail

For drive chain

Before installation release the locking device in the chain tensioner with a small screwdriver and press the tensioning plate against the chain tensioner

16 Drive Sprocket

Integral part of crankshaft

17 Power Take-Off Drive Chain

Before removing, mark direction of rotation with paint, refer to => [ Identify Timing Chain Direction of Rotation ]

Removal and installation, refer to => [ Timing Mechanism Drive Chain and Camshaft Timing Chain ] Timing Mechanism Drive Chain and Camshaft Timing Chain

18 Timing Mechanism Drive Chain Guide Rail

Removal and installation, refer to => [ Timing Mechanism Drive Chain and Camshaft Timing Chain ] Timing Mechanism Drive Chain and Camshaft Timing Chain

19 Pin

For guide rail

10 Nm

20 Mounting Pin

18 Nm

21 Bolt

23 Nm

22 Camshaft Adjuster, Intake Side

Identification: "24E"

Removal and installation, refer to => [ Camshaft Timing Chain ] Camshaft Timing Chain

23 Bolt

To loosen and tightening, counterhold with open-end spanner on camshaft hex head, refer to => [ Camshaft Timing Chain ] Camshaft Timing Chain

Replace

Contact surface of sensor wheel at screw head must be dry when installing

60 Nm plus an additional 90° (1/4) turn.

24 Camshaft Timing Chain Guide Rail

Removal and installation, refer to => [ Camshaft Timing Chain ] Camshaft Timing Chain

25 Camshaft Adjustment Valve 1 (N205)

For intake camshaft

Mark the electrical connector before disconnecting

26 Camshaft Adjustment Valve 1 (exhaust) (N318)

For exhaust camshaft

Mark the electrical connector before disconnecting

27 Camshaft Timing Chain Guide Rail

Clipped in at control housing

Identify Timing Chain Direction of Rotation





- Mark timing chain running direction with arrows using paint - arrows - for reinstallation.

Risk of damaging timing chain.

Do not mark chain with punch, notch or something similar.

Markings on Control Housing with MPI Engines





- A - Flywheel-side view

- B - Vibration damper-side view

Notches - arrows - are reference points for markings on camshaft adjusters.