Removing Actuator For Camshaft (Camshaft Controller)

→ Never turn the crankshaft against the rolling direction or when the chain tensioner is removed.

→ Proceed carefully with your work.

→ Only turn the engine at the crankshaft.

→ After working on the camshaft, re-set the valve timing.

→ Observe general warning notes and working regulations.

Fig 1: Identifying Camshaft Actuator

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1. Screw, M12 Tighten Fully After Setting Timing  . Always use a new screw.
2. Camshaft controller with integrated hexagon for countering
3. Hydraulic valve for camshaft control
4. Screw, M5 x 12

1. Turn the crankshaft at the vibration balancer using Socket-Wrench Insert 9714  so that the staking bore of the vibration balancer -2-  is approx. 45 degrees in front of the lower staking point on the timing-case cover -1-  .
   Fig 2: Identifying Crankshaft Staking Bore Angle

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2. Remove chain tensioner. → 153519 REMOVING AND INSTALLING TIMING CHAINS ON V6 DFI ENGINES 
3. Loosen all four screws on the camshafts (sprockets and camshaft controllers) by one to two turns. Counter at the respective hexagon.
   Fig 3: Loosening Camshafts Bolts

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   Information 

   • Move the camshafts carefully. Do not force  .
   • Turn in the other direction if necessary  .

   Information 

   A data matrix coding is shown on the staking dihedron of the camshafts. This is a square black/white dotted marking used for electronic identification purposes during the production process. This marking can be used as an aid when inserting the camshafts into the cylinder head. All four camshafts press against the valves the least when the data matrix coding is facing upwards during installation.

4. Turn all four camshafts so that all the data matrix codings at the adjustment edges are pointing upwards almost simultaneously (this enables the camshafts to exert the minimum amount of pressure on the valve lifters) → Camshaft position for cylinders 1 to 4 → Camshaft position for cylinders 5 to 8  . The camshafts are turned at their hexagon using an appropriate open-ended wrench → Hexagon at camshaft  . Observe identical information on assembling the camshafts.
   Fig 4: Identifying Camshaft Position (Cylinders 1 To 4)

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   Fig 5: Identifying Camshaft Position (Cylinders 5 To 8)

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   Fig 6: Turning Camshaft

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5. Loosen timing chain.
   NOTE: Small parts falling into the timing case

   • Risk of engine damage

   → Make sure that no small parts fall into the timing case.

6. Remove screw for the respective camshaft controller -1-  (counter at the hexagon) and carefully take out the camshaft controller with both hands under the timing chain → Removing camshaft controller from chain  . Carefully loosen the camshaft controller from behind using a rubber hammer if necessary → Loosening camshaft controller  .
   Fig 7: Identifying Camshaft Controller Screw

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   1. Screw, M12 Tighten Fully After Setting Timing  . Always Use A New Screw.
   2. Camshaft Adjuster With Integrated Hexagon For Countering
   3. Hydraulic Valve For Camshaft Control
   4. Screw, M5 x 12
   Fig 8: Loosening Camshaft Controller

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   Fig 9: Removing Camshaft Controller From Chain

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