Camshaft Timing Chain, Removing And Installing: Removing

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

CAUTION:

There is a risk of damaging the threads.

The control valve has left-hand threads.

-- Remove the left and right control valves using the Assembly Tool -1- in the direction of -arrow-.

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Depending On The Version Of The Control Valve Use One Of The Listed Tools:

Central Valve Assembly Tool:T10352
Central Valve Assembly Tool:T10352/1
Assembly Tool :T10352/2
Assembly Tool:T10352/3
Assembly Tool:T10352/4

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

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-- Remove the bolts -1 through 6-.

Fig 1: Loosening Sequence Of Control Valve

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WARNING:

Risk of damaging the bearing bracket.

Carefully remove the bearing bracket without tilting it.

-- Remove the bearing mount.

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CAUTION:

Risk of destroying due to a skipping camshaft timing chain.

Turn the crankshaft only in direction of engine rotation -arrow-.

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

Fig 2: 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-.

This will push back the chain tensioner.

NOTE:

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 .

Fig 3: Securing Chain Tensioner With T40267

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-- 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 Adapter:T40266 or Adapter:T10567 slightly back and forth in direction of -A arrows-.

-- Bolt the :T40271/1 to the cylinder head.

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NOTE:

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

-- Hold the exhaust camshaft in place using the :T40266 or :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 Camshaft Locks: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 guide rail -2-.

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

CAUTION:

Risk of damaging valves and piston crowns.

Do not turn the crankshaft if the camshaft timing chain has been removed.