Camshaft, Removing And Installing: Removing

• The cylinder head cover sealing surfaces on the cylinder head must not be worked on.
• During installation, all cable ties must be installed at the same location.
• During installation, all heat shield boots must be installed at the same location.

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Free up the wires on the heat shield -1-.

Fig 1: Heat Shield For Vehicles With Particulate Filter

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-- Remove the nuts -arrows- and bolts -2- and remove the heat shield.

Version with Catalytic Converters and Particulate Filter:

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-- Disconnect the connector -1-.

-- Remove the bolts -arrows- and move the Particulate Filter Differential Pressure Sensor -G1037- with the bracket to the side.

-- Free up the connector -1- for the Dual Exhaust Temperature Sensor 1 -GX41-.

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Continuation for All Vehicles:

-- Remove the bolts -2- and move the bracket to the side.

-- Remove the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

-- Remove the upper timing chain cover. Refer to UPPER TIMING CHAIN COVER, REMOVING AND INSTALLING .

-- Remove the air filter housing. Refer to AIR FILTER HOUSING, REMOVING AND INSTALLING .

-- Disconnect the connector -2- for the Oxygen Sensor 1 After Catalytic Converter -GX7- -1- and free up the wires (example photo).

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-- Disconnect the connectors and free up the wires.

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1 -  For the Turbocharger Recirculation Valve -N249-

3 -  For Charge Air Pressure Control Module -GX34-

-- Press the release buttons on both sides and remove the crankcase ventilation hose -4-.

-- Disconnect the connectors and free up the wires.

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1. For the Camshaft Position Sensor 3 -G300-
2. Tank Ventilation Pressure Sensor 1 -G950- (for version)
3. For the Oxygen Sensor 1 Before Catalytic Converter -GX10- (remove from the bracket to do so)
4. For the EVAP Canister Purge Regulator Valve 1 -N80-

-- Remove the ignition coils. Refer to IGNITION COILS, REMOVING AND INSTALLING .

-- Remove the oil separator. Refer to OIL SEPARATOR, REMOVING AND INSTALLING .

-- Remove the high pressure pump. Refer to HIGH PRESSURE PUMP, REMOVING AND INSTALLING .

-- Remove the vacuum pump. Refer to VACUUM PUMP, REMOVING AND INSTALLING .

-- Open the heat shield boot.

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-- Loosen the hose clamp -arrow- and remove the coolant hose.

-- Disconnect the connector -2- from the cam adjustment actuator.

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-- Free up the vacuum hose -1- and the wires.

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-- Release the catches in direction of -arrows-, remove the wiring duct -2- with the wiring harness and move to the side.

-- Loosen the hose clamp -2- and disconnect the hose for the EVAP system.

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-- Lift the clip -3-, disconnect the coolant line -2- and free up from the cylinder head and push it toward the side.

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-- Remove the vacuum hose -4-, disconnect the vacuum line -1- for the Intake Manifold Runner Control Valve -N316- and free it up at the cylinder head.

-- Remove the camshaft timing chain. Refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING .

-- Apply the oil pump drive chain.

-- Install the Vibration Damper Assembly Tool - Turning Over Tool:T10531/3  . In the "TDC point" the flat area -1- points upward. Install the Vibration Damper Assembly Tool - Knurled Nut:T10531/4  . Turn the crankshaft with a 32 mm open end wrench 90° counter-clockwise out of "TDC".

Fig 2: Identifying Assembly Tool - Turning Over Tool T10531/3

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-- Reduce the intake camshaft pretension using the Assembly Tool:T40427  in the direction of -arrow B-, pull the Camshaft Lock:T40271/3  out of the chain sprocket splines -arrow A-, and bring the intake camshaft into its resting position.

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-- Reduce the exhaust camshaft pretension using the Assembly Tool:T40427  in the direction of -arrow B-, pull the Camshaft Lock:T40271/4  out of the chain sprocket splines in direction of -arrow A-, and bring the exhaust camshaft into its resting position.

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-- Remove the cylinder head cover bolts in -1 to 6- sequence.

Fig 3: Cylinder Head Cover Bolt Loosening Sequence

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-- Carefully loosen the cylinder head cover -2- from the bonding with a screwdriver -1- and remove it together with the camshafts.

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• Pay attention that the camshafts do not fall out of the cylinder head cover.

-- Remove the camshaft and cover the open engine components.

-- If necessary for continuing work: mark the roller rocker lever and hydraulic lifter for reinstallation, remove them and place on a clean surface.