Camshaft Timing Chain, Removing and Installing: Installing

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• Mount the timing chain on the intake camshaft.
• Mount the timing chain on the exhaust camshaft.
• Lay the timing chain on the crankshaft and hold it there.
• Install the guide rail -2- and tighten the bolts -1-.

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• Install the upper guide rail -arrow-.

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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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• Continue to hold the camshaft and install the camshaft timing chain tensioning rail. 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 direction of -arrow A- and push the -T40271/1- from the chain sprocket splines in direction of -arrow B-.
• Remove the -T40271/1-.
• Release the camshaft in the direction -C-, until the timing chain touches the guide rail -1-. Hold the camshaft firmly in this position, install the tensioning rail -2- 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 that the position of the colored chain link is aligned to the markings.

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• Remove the -T40271/2-.
• Check that the position of the colored chain link is aligned to the markings.

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• Install the drive chain for the oil pump and the chain tensioner. Tighten the bolt -1- and remove the -T40011-.

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• Install the bolts -arrows- and tighten them. Tightening specifications. Refer to Cylinder Head - Tightening Specification and Sequence .

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• Lubricate the hole -arrow- with engine oil.

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  • Carefully mount the bearing bracket without tilting it.
• Attach the bearing mount and install the bolts -arrows- all the way by hand.
• Depending on the version, remove either the -T40011- or the -T40267-.
• Tighten the bearing bracket bolts -arrows-. Refer to Overview - Camshaft Timing Chains .

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• 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 -T10531/3-. In the "TDC point" the flat area -1- points upward. Install the -T10531/4-. Turn the crankshaft using a 32 mm open end wrench twice in the direction of engine rotation.

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NOTE: Due to the ratio, the painted chain links no longer match up after the engine has been turned.
• Remove the turning over tool and install the lower timing chain cover. Refer to LOWER TIMING CHAIN COVER, REPLACING .
• Install the upper timing chain cover. Refer to UPPER TIMING CHAIN COVER, REMOVING AND INSTALLING .