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.