Camshaft Timing Chain, Removing And Installing: Removing

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

-- Depending on the version, remove the control valve in the direction of the -arrow- using either the : T10352  or :T10352/1A  .

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-- Remove the bolts -arrows-.

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-- Remove the bearing mount.

-- Rotate the vibration damper using the :T10355  into the "Top Dead Center (TDC)" position.

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• The notch on the vibration damper and the marking on the lower cover for timing chain must be opposite one another -arrow-.
• The markings -1- on the camshafts must point upward.

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

-- Press the oil pump chain tensioner in the direction of -arrow- and secure it with a :T40011  .

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-- Remove the oil pump chain tensioner -1-.

-- Remove the oil pump drive chain.

-- Remove the bolts -arrows-.

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Two Different Chain Tensioners may be Installed Depending on the Version 

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Version 1 

-- Install the :T40243  -arrows-.

-- Lift the chain tensioner locking wedge by inserting a scriber or a suitable screwdriver into the hole of the chain tensioner in the direction of -arrow 1- and hold it there.

-- Slowly press and hold the :T40243  in the direction of -arrow 2-.

-- Secure the chain tensioner using the :T40011  .

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Version 2 

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-- Install the :T40243  -arrows-.

-- Press the chain tensioner locking ring -1- together and hold it.

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

-- Secure the chain tensioner with the :T40267  .

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All Versions 

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-- Remove the :T40243  .

-- Bolt the :T40271/2  to the cylinder head and push the chain sprocket splines in the direction of -arrow 2-. If necessary, turn the intake camshaft with a wrench in the direction of -arrow 1-.

With Wrench Clearance 

-- Install the :T40271/1  on the cylinder head. Hold the camshaft with a wrench in a clockwise in the direction of -arrow-.

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-- Remove the bolt -A- and remove the tensioning rail while continuing to hold the camshaft.

-- Slide the :T40271/1  into the chain sprocket splines -2-. If necessary, turn the exhaust camshaft clockwise -1- further, until the camshaft locating tool can be pushed in. The camshaft timing chain must be >>loose<< between the chain sprocket.

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Without Wrench Clearance 

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

A second technician is necessary for the following steps.

-- Hold the exhaust camshaft securely with the :T10172 A  in direction of -arrow A-. Remove the bolt -1- and guide the tensioning rail -2- downward.

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

All Versions 

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-- Remove the upper guide track -arrow- by unlocking the latch with a screwdriver and pushing the guide track forward.

-- Remove the bolts -A- and then remove the camshaft timing chain glide track.

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-- Remove the timing chain.