Camshaft Timing Chain, Removing And Installing: Removing

-- 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 .

• Pay attention to the direction of rotation: the control valves have left-hand threads - risk of damaging the threads.

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-- Remove the left and right control valves in direction of -arrow-.

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

• Central Valve Assembly Tool: T10352 
• Assembly Tool: T10352/1A 
• Assembly Tool : T10352/2 
• Assembly Tool: T10352/3 
• Assembly Tool: 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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-- For the following turning of the crankshaft, only turn it in the direction of engine rotation -arrow-.

-- Remove the bolts -1 to 6- and carefully remove the bearing bracket, do not tilt.

-- Turn the crankshaft using the : T40263  , : T40314  and the 24 mm socket until the vibration damper is at "TDC".

• The markings -3- from the camshaft chain sprockets -2 and 4- must point upward respectively.

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• The notch -arrow- on the vibration damper -1- and the arrow marking -5- on the lower timing chain cover must be align.

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

-- Check the "TDC point" again.

-- Press the tension spring wire clip in the direction of -arrow- and secure it with a : T40011  .

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-- Remove the bolt -1- and 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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-- Remove the bolt -arrow-.

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

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

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

• This will push back the chain tensioner.

TIP:

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

-- Lock the chain tensioner with the : T40267  .

-- Remove the : T40243  .

-- Install the : T40271/2  on the cylinder head.

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-- Push the camshaft positioning tool in the splines of the chain sprocket in direction of -arrow B-.

-- If required, turn the intake camshaft with the : T40266  or : T10567  slightly back and forth in direction of -arrows A-.

-- 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 using the : T40266  or Adapter: T10567  . Remove the guide pin -1- and remove the tensioning rail -2- downward.

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

-- Remove bolts -arrows- and remove guide rail -1-.

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-- Remove the guide pin -1- and the glide rail -2-.

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