Two Different Chain Tensioners May Be Installed Depending on the Version:

Version 1: 

• Install the -T40243- -arrows-.
• Lift up the locking wedge for the chain tensioner by inserting a scriber or a suitable screwdriver into the chain tensioner opening in direction of -arrow 1-. Slowly press and hold the - T40243- in direction of -arrow 2-.

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TIP: 

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

• Secure the chain tensioner using the -T40011-.

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Version 2: 

• Install the -T40243- -arrows-.
• Press the chain tensioner circlip -1- together and hold it.
• Slowly press and hold the -T40243- in direction of -arrow-.

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TIP: 

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-.

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All Versions: 

• Remove the -T40243-.
• Bolt the -T40271/2- to the cylinder head and into the splines on the chain sprocket in the direction of the -arrow 2-. If necessary, turn the intake camshaft with a wrench in the direction of the -arrow 1-.

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With Wrench Clearance: 

• Install the -T40271/1- on the cylinder head. Counterhold the camshaft with a wrench in a clockwise direction -arrow-.

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

• Remove the bolt -A- and slide the tensioning rail down. At the same time continue counterholding the camshaft.
• Turn the exhaust camshaft clockwise in direction of -arrowuntil the -T40271/1- can be slid into the chain sprocket splines.

Without Wrench Clearance: 

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

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

• Hold the exhaust camshaft securely with the -T10172A- in direction of -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-.

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All Versions: 

• Remove the upper guide rail -arrow- by unlocking the latch with a screwdriver and pushing the guide rail forward.
• Remove the bolts -1- and remove the guide rail -2-.

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• Remove the timing chain.