Removing Camshaft Actuator

NOTIFICATION 

Timing not set correctly 

• Risk of engine damage 
• Rough running engine 
• Loss of engine power 
  • → Do not use force when fitting the staking tool.
  • → Make sure that the aap is equal on both sides.
  • → When inserting the staking tools, do not use force to turn the camshafts against any resistance.
  • → The engine must be exactly at top dead center.
  • → The opposite cylinder must be at ignition TDC.

NOTIFICATION 

Dirt and contamination 

• Risk of damage to units or components 
  • → Protect components from dirt and contamination.
  • → Clean or replace dirty components.

Information 

• Do not clean the camshaft controller in a parts washer. 
• Only the outside can be cleaned using a clean, lint-free cloth. 

1. Turn engine clockwise to ignition TDC of cylinder 1. Check markings on crankshaft and actuators.
2. Secure camshafts.
   1. 2.1  Carefully lever out stoppers on the cylinder head cover using a screwdriver.

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      Stoppers on cylinder head cover

   2. 2.2  Screw adapter -1-  into the camshaft housing and tighten to 9 Nm. 

      Cylinder bank 1: T40331/2 

      Cylinder bank 2: T40331/3 

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      Adapter on camshaft housing (similar to illustration)

      Information 

      It may be necessary for another person to carefully position the camshafts at the actuators using > T90001 - counterhold tool  and > VAS 261 001 - Ring wrench insert, a/f 41  .

   3. 2.3  Insert > T40331 - camshaft clamp  .
      1. 2.3.1 Cylinder bank 1: 

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         Camshaft clamps on cylinder bank 1

         1	T40331/1 - The letter "A" must be facing you
         2	T40331/9
         3	T40331/2
         4	T40331/4 - Outlet camshaft
         5	T40331/6 - Intake camshaft

      2. 2.3.2 Cylinder bank 2: 

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         Camshaft clamps on cylinder bank 2

         1	T40331/1 - The letter "B" must be facing you
         2	T40331/3
         3	T40331/9
         4	T40331/10 - Outlet camshaft
         5	T40331/8 - Intake camshaft

3. Secure the crankshaft.
   1. 3.1  Unscrew stoppers on the crankcase.
   2. 3.2  Secure the crankshaft using > T40069 - locking pin  .

   Information 

   The > T90001 - counterhold tool  can only be inserted at one position. The markings -1 and 2-  must line up.

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   Special tool T90001 on actuator

   Information 

   Never use the camshaft clamps -T40331- as a counterhold tool for loosening and tightening the camshaft controllers.

4. Loosen and unscrew central valves -1-  .

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   Camshaft actuator

   1. 4.1  Fit > T90001 - counter-hold tool-2-  using > VAS 261 001 - ring spanner insert, a/f 41-3-  on the actuators. Loosen central valves -1-  using > T90000 - socket-wrench insert E24  .
5. Fix chain tensioner in place.

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   Securing chain tensioner

   1. 5.1  Press the chain tensioner piston back fully. To do this, actuate the tensioning rail by hand.
   2. 5.2  Fix the chain tensioner -1-  in place using > T03006 - locking pin-3-  .
6. Unscrew central valves and remove actuators from camshafts and from the control chain.

   Secure the control chain to prevent it from falling down.