Camshaft, Removing And Installing: Removing

• The cylinder head cover sealing surfaces on the cylinder head must not be worked on.
• The camshaft bearings are integrated in the cylinder head or cylinder head cover. Before removing the cylinder head cover the tension from the camshaft timing chain must be released.
• During installation, all cable ties must be installed at the same location.

-- Remove the noise insulation. Refer to NOISE INSULATION, REMOVING AND INSTALLING .

-- 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 .

-- Versions with particulate filter: disconnect the connector -2- for the Exhaust Pressure Sensor 1 -G450-.

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-- Disconnect the connectors:

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1. For EVAP Canister Purge Regulator Valve 1 -N80-
2. For Turbocharger Recirculation Valve -N249-
3. For Camshaft Position Sensor 3 -G300-

-- Remove the ignition coils. Refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

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

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-- Free up the fuel hose -1- and the wire.

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-- Release the catches -arrows- and remove the wiring duct with the wiring harness and move to the side.

-- Remove the wiring duct -3- upward from the bracket to do so release the catch.

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-- Remove the bolts -arrows- and carefully pivot the coolant pipe slightly toward the rear.

-- Remove the upper coolant pipe. Refer to UPPER COOLANT PIPE, 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 .

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

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

-- Lock the intake camshaft pretension using the : T40266  or : T10567  in the direction of -arrow 1-, pull the : T40271/2  from the chain sprocket splines in direction of -arrow 2- and bring the camshaft into the rest position.

-- Lock the exhaust camshaft pretension using the : T40266  or : T10567  in the direction of -arrow 1-, pull the : T40271/1  from the chain sprocket splines in direction of -arrow 2- and bring the camshaft into the rest position.

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

-- Pry up the cylinder head cover -2- using a tool for example a screwdriver -1- starting at the chain side.

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-- Remove the cylinder head cover together with the camshafts.

• 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.