Camshaft, Removing And Installing. Engine Codes CXBA, CNSA, CXBB, And CNSB: Removing

WARNING: This page is about a different car, the 2021 Volkswagen GTI, 2020 Volkswagen GTI, 2019 Volkswagen GTI, 2018 Volkswagen Golf, and 2018 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The sealing surfaces of the lower cylinder head cover and on the upper cylinder head must not be reworked.

The camshaft bearings are integrated in the cylinder head or cylinder head cover. The tension must be released from the camshaft timing chain before removing the cylinder head cover.

When installing, secure all cable ties back to same positions.

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

-- Remove the upper coolant pipe. Refer to UPPER COOLANT PIPES, REMOVING AND INSTALLING .

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

-- Free up the connector from the clip -4- and pivot it forward.

Fig 1: Identifying Bolts

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-- Release the retainers in direction of -arrow-, remove the wiring duct upward from the bracket and move it towards the front.

-- Remove bolts -1, 2 and 3-. Carefully swing coolant line slightly toward the rear.

NOTE:

Risk of destroying the coolant pipes through deformation.

Never change the coolant pipe bent shape.

-- Disconnect the connector -1- from the EVAP Canister Purge Regulator Valve 1 -N80-.

Fig 2: Connector And EVAP Canister Purge Regulator Valve 1 -N80

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-- Press the release button on the crankcase ventilation hose -2- and remove the hose.

-- Remove the bolts -arrows- and the crankcase ventilation.

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

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

-- Support the engine in the installation position. Refer to ENGINE, SUPPORTING IN INSTALLED POSITION .

-- Remove the engine mount. Refer to ENGINE MOUNT, REMOVING AND INSTALLING .

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

-- Remove the right wheel housing liner front section. Refer to FRONT WHEEL HOUSING LINER, REMOVING AND INSTALLING .

-- Remove the engine support. Refer to ENGINE SUPPORT, REMOVING AND INSTALLING .

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

NOTE:

To prevent damage from escaping coolant on the oil pressure switch, cover with a cloth.

-- Turn the vibration damper with the : T10355 to the "TDC point".

Fig 3: Identifying Vibration Damper With Counterhold - Vibration Damper T10355

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The markings -1- on the camshaft chain sprockets must be opposite the markings -2 and 3-.
The notch on the vibration damper and the marking on the lower timing chain cover -arrow- must be align.

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

Fig 4: Identifying Assembly Tool T10352 To Remove Control Valve

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NOTE:

The control valve has left-hand threads.

Depending on the version, different control valves can be installed. Use a fitting assembly tool -1-.

-- Remove the left and right control valves using the : T10352/2 or : T10352/4 in the direction of -arrow-.

-- Remove the control valves with the : T10352/2 or : T10352/4 in the direction of -arrow-.

-- Remove the bolts -arrows- and remove the bearing bracket.

Fig 5: Bearing Bracket Bolts

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-- Remove the bolts -arrows-.

Fig 6: Identifying Bolts

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-- Install the : T40243 -arrows-.

Fig 7: Identifying Lever T40243 -Arrows-, Installation

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-- Press the chain tensioner circlip -1- together and hold it.

-- Slowly press and hold the : T40243 in the direction of -arrow-.

-- Secure the chain tensioner with the : T40267 .

Fig 8: Securing Chain Tensioner With T40267

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-- Remove the : T40243 .

-- Bolt the : T40271/2 to the cylinder head and slide into the splines on the chain sprocket in the direction of the -arrow 2-. Turn the intake camshaft using the : T40266 -1- if necessary.

Fig 9: Identifying Camshaft Clamp T40271/2 And Assembly Tool T40266

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-- Install the : T40271/1 on the cylinder head.

Fig 10: Identifying Camshaft Lock - Component 1T40271/1

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The help of a second technician is necessary for the following step.

-- Hold the exhaust camshaft securely with the : T10172A in direction of -arrow A-. Remove the bolt -1- and guide the tensioning rail -2- downward. Turn the camshaft clockwise in direction of -arrow A- until the Camshaft Locks: T40271/1 can be slid, in the direction of the -arrow B-, into the chain sprocket splines -C-

-- Check the installation position -C- of the : T40271/1 .

-- Remove the guide rail -1-. To do so, release the retainer -arrow- with a screwdriver and push the guide rail off toward the front.

Fig 11: Identifying Guide Rail

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-- Press the oil pump chain tensioner bracket in direction of -arrow- and lock with : T40011 .

Fig 12: Identifying Locking Pin T40011

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-- Remove the bolt -1- and remove the chain tensioner.

-- Remove the bolts -1- and remove the glide rail -2-.

Fig 13: Identifying Bolts And Glide Rail

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-- Remove the camshaft timing chain from the camshaft sprockets and guide downward.

-- 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 counter-clockwise out of "TDC".

Fig 14: Identifying Assembly Tool - Turning Over Tool T10531/3

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-- Turn the intake camshaft in the direction of the -arrow 1- using the : T40266 . Slide the : T40271/2 out of the chain sprocket splines in direction of -arrow 2- and bring the camshaft into the rest position.

Fig 15: Identifying Adapter T40266 And Intake Camshaft

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-- Turn the exhaust camshaft using the : T10172A in direction of -arrow A-. Slide the : T40271/1 out of the chain sprocket splines in the direction of -arrow B- and bring the camshaft into the resting position.

Fig 16: Identifying Counterhold - Multiple Use T10172A

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

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-- Remove the cylinder head cover.

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