Removing Camshaft Actuator

WARNING: This page is about a different variant/trim than selected.

NOTE: 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 gap 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 centre.

→ The opposite cylinder must be at ignition TDC.

NOTE: Dirt and contamination

Risk of damage to units or components
→ Protect components from dirt and contamination.

→ Clean or replace dirty components.

Information

It may be necessary for a second mechanic to carefully position the camshafts at the actuators using > T90001 - counter-hold tool and > VAS 261 001 - ring spanner socket, a/f 41 .

Turn the crankshaft until the marking on the vibration damper -1- is positioned at TDC (top dead center) -2- .

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TDC marking on vibration damper
The markings on the camshaft actuators (cylinder bank 1) -1 and 2- must be aligned with the reference points -Arrows- on the camshaft housing. Turn the crankshaft further by one turn if necessary.

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Markings on camshaft actuator (cylinder bank 1)
The markings on the camshaft actuators (cylinder bank 2) -1 and 2- must be aligned with the reference points -Lines- on the camshaft housing.

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Markings on camshaft actuator (cylinder bank 2)
Remove stoppers on camshafts -1- .

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Stoppers on camshafts
1. 4.1 Releasing and disconnecting quick connector -3- .
2. 4.2 Move vacuum hoses -4- aside so that the stoppers on the camshafts -1- are accessible.
3. 4.3 Unscrew screws -2- .
4. 4.4 Remove stoppers -1- .
Screw in and tightern adapter T40331/2 -1- from > T40331 - camshaft clamp tool kit into the camshaft housing on cylinder bank 1.
Tightening torque: 9 Nm (6.5 ftlb.)

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Adapter on camshaft housing, cylinder bank 1
Screw in and tighten adapter T40331/3 -1- from > T40331 - camshaft clamp tool kit into the camshaft housing on cylinder bank 2.
Tightening torque: 9 Nm (6.5 ftlb.)

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Adapter on camshaft housing, cylinder bank 2

Information

The camshaft clamp must be easy to insert and must not be fitted using a striking tool.

Information

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

Insert > T40331 - camshaft clamp .

Cylinder bank 1

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Camshaft clamp on cylinder bank 1

1	T40331/1 - The letter "A" must be facing you.
2	T40331/9 - Screws
3	T40331/2 - Sleeves
4	T40331/5 - Exhaust camshaft
5	T40331/4 - Intake camshaft

7.1 Screw in T40331/9 screws -2- by hand.
7.2 Tighten screws on the camshaft clamps -Arrows- .

Tightening torque 9 Nm (6.5 ftlb.)

Insert > T40331 - camshaft clamp .

Cylinder bank 2

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Camshaft clamps on cylinder bank 2

1	T40331/1 - The letter "B" must be facing you.
2	T40331/9 - Screws
3	T40331/3 - Sleeves
4	T40331/5 - Exhaust camshaft
5	T40331/8 - Intake camshaft

8.1 Screw in T40331/9 screws -2- by hand.
8.2 Tighten screws on the camshaft clamps -Arrows- .

Tightening torque: 9 Nm (6.5 ftlb.)

Secure the crankshaft.

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Securing crankshaft
1. 9.1 Unscrew screw plug -1- from bore -2- .
2. 9.2 Screw > T40069 - locking pin into the bore -2- by hand.
  Turn the crankshaft back and forth slightly to do this, if necessary.
3. 9.3 Tighten > T40069 - fastening screw as well.
  Tightening torque 20 Nm (14.75 ftlb)
> VAS 261 001 - Ring spanner insert, a/f 41 with > T90001 - counterhold tool must be fitted on the camshaft actuators.
The > T90001 - counterhold tool can only be inserted at one position. To do this, the markings -1 and 2- on the camshaft actuator and chain housing must be aligned.

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Special tool T90001 on camshaft actuator
Release camshaft actuator -1- .

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Camshaft actuator
1. 11.1 Counter the camshaft actuator -1- using > VAS 261 001 - ring spanner insert a/f41-3- and > T90001 - counterhold tool-2- and loosen using > T90000 - socket E24 .
  Do not unscrew the nut of the camshaft actuator -1- from the camshaft.
2. 11.2 Mark camshaft actuator -1- and camshafts for re-installation using a coloured marker.
  Information
  
  The chain tensioner piston is oil-damped and can only be pressed back slowly and with constant pressure.
Lock the chain tensioner in place.

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Securing chain tensioner
1. 12.1 Push the piston of the chain tensioner -1- as far as it goes using a suitable tool.
2. 12.2 Fix the chain tensioner -1- in place using > T03006 - locking pin-3- .
Unscrew control valves and remove camshaft actuator from the camshaft and out of the control chain.
The control chain must not fall into the chain housing!
Secure the control chain to prevent it from falling down.