Camshaft Timing Chain, Removing from Camshafts: Installing

• The vibration damper is at the "TDC" point.
• The notch -1- on the vibration damper must align with the arrow marking -2- on the lower timing chain cover.

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• Camshaft chain sprockets fixed with -T40271/1- and - T40271/2-.
• The markings -arrow- previously made on the camshaft chain sprockets are flush to the camshaft locks.

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• Position the markings on the chain links -arrows- at the chain sprockets -1- to mount the camshaft timing chain.
• Install the upper guide rail -2-.

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With Wrench Clearance: 

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

• Turn the exhaust camshaft in direction of -arrow 1-, slide the - T40271/1- out of the chain sprocket splines in direction of -arrow 2-.

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• Carefully release the camshaft, until the camshaft timing chain is laying on the upper guide rail. Hold the camshaft in this position.
• Bring the camshaft timing chain tensioning rail into the installation position, and tighten the bolt -A-.
• Remove the -T40271/1-.

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Without Wrench Clearance: 

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

• Turn the exhaust camshaft with the -T10172A- slightly in the direction of -arrow A- and push the -T40271/1- from the chain sprocket splines direction of -arrow B-.
• Release the camshaft carefully in direction -C-, until the camshaft timing chain touches the guide rail -1-. Hold the camshaft in this position.
• Bring the camshaft timing chain tensioning rail -2- into the installation position, and tighten the bolt -3-.

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All Versions: 

• Turn the intake camshaft in direction of -arrow 1-, slide the - T40271/2- out of the chain sprocket splines in direction of -arrow 2- and release the camshaft.
• Remove the -T40271/2-.

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• Check the valve timing. The camshaft timing chain and cylinder head -arrows- must align with the markings on the chain sprockets -1-.
• The markings for the camshaft timing chain and the camshaft timing chain guide rail -2- must align.
• The notch on the vibration damper must align with the marking on the lower timing chain cover -3-. -

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• Lubricate the hole -arrow- with engine oil.

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  • Carefully mount the bearing bracket without tilting it.
• Mount the bearing bracket and the bolts -arrows- hand-tight.
• Depending on the version, remove either the -T40011- or the -T40267-.
• Tighten the bearing bracket bolts -arrows-. Refer to Overview - Camshaft Timing Chains .
• Install the bolt -arrow-.
• Install the control valve -item 6-. Tightening specifications: 35 Nm

Further installation is performed in reverse order of removal, while noting the following:

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

There are additional procedures depending on the model. Refer to Camshaft Timing Chain, Removing from Camshafts .