Camshaft Timing Chain, Removing And Installing, Engine With One Camshaft Adjuster: Removing

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

-- Remove the upper timing chain cover. Refer to TIMING CHAIN COVER, REMOVING AND INSTALLING, ENGINE WITH ONE CAMSHAFT ADJUSTER .

• Pay attention to the direction of rotation: the control valve has left-hand threads - there is a risk of damaging the threads.

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-- Remove the control valve in direction of -arrow-.

Depending on the version of the control valve use one of the tools listed:

• Central Valve Assembly Tool:T10352B 
• :T10352/1A 
• :T10352/2 
• :T10352/3 
• :T10352/4 

-- To do so counterhold the crankshaft on the vibration damper with the :T40263  , :T40314  and the 24 mm socket.

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-- Remove the bolts -arrows-.

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• Carefully remove the bearing mount, without tilting.

-- Remove the bearing mount.

-- Turn the vibration damper in "TDC".

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

TIP: 

The combination of the :T40263  , :T40314  and 24 mm socket are better suited than the :T10355  for positioning the vibration damper.

-- Remove the lower timing chain cover. Refer to LOWER TIMING CHAIN COVER, REPLACING .

-- Check the "TDC point" again.

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

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-- Remove the bolt -1- and remove the chain tensioner -2-.

-- Remove the oil pump chain from the three-layer chain sprocket, pull forward and place at the bottom of the oil pump chain sprocket.

-- Remove the bolts -arrows-.

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-- Install the :T40243  on the cylinder head -arrows lower-.

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

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

• This will push back the chain tensioner.

TIP: 

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The chain tensioner is lubricated with oil and can only be pushed back slowly by applying constant pressure.

-- Secure the chain tensioner with the :T40267  .

-- Remove the :T40243  .

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

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

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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 the arrow -A-. Remove the bolt -1- and guide the tensioning rail -2- downward.

-- Turn the exhaust camshaft clockwise in direction of -arrow A- until the :T40271/1  can be pushed into the chain sprocket splines -C- in direction of -arrow B-.

-- Remove the guide rail -1- by unlocking the latch -arrow- with a screwdriver and pushing the guide rail forward.

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-- Remove the bolts -arrows- and remove the chain tensioner -1-.

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

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-- Remove the camshaft timing chain from the camshaft sprockets and hang it on the camshaft pins -arrows-.

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-- Remove the balance shaft assembly chain tensioner -1-.

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-- Remove the bolts -1- and remove the tensioning rail -2- and guide rails -3- and -4-.

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-- Loosen the adjusting bolt -A- and remove the tensioning pin -B-.

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-- Remove the oil pump drive timing chain to remove the three stage chain sprocket.

-- Remove the camshaft timing chain and drive chain for the balance shaft.