Chain Drive Overview
Chain Drive Overview
I - => [ Chain Drive Overview ]
II - => [ Timing Chain Assembly Overview ]
III - => [ Oil Pump Drive Chain Assembly Overview ]
Chain Drive Overview
1 Exhaust Camshaft Sprocket
2 Timing Chain Tensioner
• At the top with a sliding insert.
3 Timing Chain
4 Tensioning Rail
• For the timing chain tensioner.
• Secured to the cylinder block.
5 Oil Pump Drive Chain Tensioner
• With tensioning rail.
6 Crankshaft Sprocket
• Component of the crankshaft.
7 Oil Pump Drive Chain Guide Rail
• Secured to the upper oil pan.
8 Oil Pump Sprocket
• Removing and installing, refer to => [ Oil Pump ] Service and Repair.
9 Oil Pump Drive Chain Guide Rail
10 Oil Pump Drive Chain
• From MY 2008 the roller chain has been changed to a toothed chain.
11 Double Chain Sprocket (Drive Wheel)
12 Timing Chain Guide Rail
13 Intake Camshaft Adjuster
• With sprocket.
Timing Chain Assembly Overview
1 Intake Camshaft Adjuster
• With sprocket.
• Do not disassemble.
2 Exhaust Camshaft Sprocket
• Not pressed on the camshaft.
• When removing, lightly pry off if necessary.
3 Cylinder Head
4 Tensioning Rail
• For the timing chain tensioner.
• Secured to the cylinder block.
• Oil before installing on the pin.
5 Double Chain Sprocket (Drive Wheel)
• Securing, refer to => [ Oil Pump Drive Chain Assembly Overview ].
6 Timing Chain
• Removing:
- Work procedure same as for => [ Valve Timing, Adjusting ] Adjustments.
- Remove vacuum pump. Refer to => [ Brake Booster Vacuum Pump ] Brake Booster Vacuum Pump.
- Mark direction of travel.
• Note when installing:
- Install in original direction of rotation.
- Chain must lie correctly in tensioning and guide rails.
- Adjust the valve timing. Refer to => [ Valve Timing, Adjusting ] Adjustments.
7 Strainer
• Replace
8 Bolt
• 10 Nm
9 Timing Chain Tensioner
• Secure with locking pin (T03006).
10 Gasket
• Replace
11 Guide Rail
• Oil before installing on the pin.
12 Bolt
• Replace
• 60 Nm + 90° (1/4) additional turn.
13 Bolt
• Replace
• 60 Nm + 90° (1/4) additional turn.
Oil Pump Drive Chain Assembly Overview
1 Cylinder Block
2 Guide Rail
• Secured to the upper oil pan.
• Oil before installing on the pin.
3 Oil Pump Drive Chain Tensioner
• Secure with locking pin (T10115).
4 Bolt
• 10 Nm
5 Oil Pump Sprocket
• Removing and installing, refer to => [ Oil Pump ] Service and Repair.
6 Oil Pump Drive Chain
• From MY 2008 the roller chain has been changed to a toothed chain.
• Removing:
- Remove the engine.
- Remove the control housing cover.
- Remove the timing chain.
- Remove the chain tensioner - item 3 -.
- Mark direction of travel.
• Note when installing:
- Install in original direction of rotation.
- Chain must lie correctly in tensioning and guide rails.
- Adjust the valve timing. Refer to => [ Valve Timing, Adjusting ] Adjustments.
7 Bolt
• Replace
• 20 Nm + 90° (1/4) additional turn.
8 Guide Rail
• Oil before installing on the pin.
9 Bolt
• 10 Nm
10 Axial Bearing Disc
• Engages in the groove in the double chain sprocket (drive wheel) - item 12 -.
11 Bolt
• Replace
• 60 Nm + 90° (1/4) additional turn.
12 Double Chain Sprocket (Drive Wheel)
• Oil the journal before installing.
• Lubricate the axial bearing disc - item 10 - groove.
13 Double Chain Sprocket (Drive Wheel) Journal
14 Tensioning Rail Pin
• 40 Nm
• For the timing chain tensioner.