Bearing Bracket, Removing And Installing, Engine With Two Camshaft Adjusters: Removing

Preliminary work may be required depending on the model. Refer to Chain Drive ; Bearing Bracket, Removing and Installing.

-- If not already removed, remove the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

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

• Pay attention to the direction of rotation: the control valves have left-hand threads - risk of damaging the threads.
  Fig 1: Identifying Assembly Tool T10352/2

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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 

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

-- To do so, use the Wrench - 21mm:T40263  , Adapter:T40314  and 24 mm socket to counterhold the crankshaft at the vibration damper.

Fig 2: Using T40263 & T40314

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-- Remove the bolts -arrows-.

Fig 3: Identifying Bolts

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• Carefully remove the bearing bracket without tilting - risk of damage.

-- Remove the bearing mount.

-- Remove the plug -arrow-.

Fig 4: Identifying Plug

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-- Remove the bolts -arrows-.

Fig 5: Identifying Bolts

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-- Remove the bolt -arrow-.

Fig 6: Identifying Bolt

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-- Install the Chain Tensioner Lever:T40243  on the cylinder head -lower arrows-.

Fig 7: Identifying Version 2

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• A second technician is required for the following steps.

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

-- Slowly press and hold the Chain Tensioner Lever: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 Tensioner Locking Tool:T40267  .

Fig 8: Securing Chain Tensioner

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-- Remove the Chain Tensioner Lever:T40243  .