Camshaft Timing Chain, Removing From Camshafts: Notes

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Tools, Preparing

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The camshafts are secured with the : T40264/2A in "TDC".

-- If only one :T40264/2 is available, the lower bar -arrow- must be separated from the :T40264/2 .

Tools, Preparing:

Fig 1: Crankshaft Adapter T03003

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-- When only the tool Crankshaft Adapter:T03003 is available the pins must be separated so that it can be placed on the vibration damper.

Procedure

-- Remove the noise insulation. Refer to NOISE INSULATION, REMOVING AND INSTALLING .

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

-- Remove the camshaft adjustment valves. Refer to Camshaft Adjustment Valve 1 -N205- / .

-- Remove the crankcase ventilation module. Refer to CRANKCASE VENTILATION MODULE, REMOVING AND INSTALLING .

-- Turn the crankshaft in the direction of engine rotation -arrow- to "TDC" using the :T03003A .

Fig 2: Turning Crankshaft To TDC

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The notch -1- in the :T03003A is positioned vertically to the oil pan sealing surface.
The marking -2- on the vibration damper is positioned opposite the marking -3- on the sealing flange.

-- Release and remove the plug -arrow- counter-clockwise from the camshaft housing.

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The threaded holes -arrows- in the camshafts must be visible.

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TIP:

If the threaded hole is not visible, turn the crankshaft one additional turn.

-- Insert the : T40264/2A on the cylinder head and tighten to 12 Nm -arrows-, to do so turn the crankshaft slightly back and forth if necessary.

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-- Remove the locking bolt -arrow- for the "TDC" marking from the cylinder block.

Fig 3: "TDC" Locking Bolt- Marking- Tightening Specification

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-- Install the :T40069 in the groove and tighten to 15 Nm. If necessary, move the crankshaft back and forth slightly to center the bolt.

Fig 4: Identifying Locking Pin T40069

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-- Push the chain tensioner piston for the camshaft timing chain inward all the way with a screwdriver and lock the chain tensioner with : T40011 .

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CAUTION:

Risk of damaging the camshafts.

Do not use the :T40264/2A to counterhold when loosening the camshaft adjuster bolt.

-- To counterhold, attach the :T40297 to the relevant camshaft adjuster and loosen the bolts -1-.

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-- Mark the installation position of the camshaft adjuster with paint for installation later.

CAUTION:

Risk of destroying the engine.

To prevent small parts from accidentally entering the engine through the opening in the timing chain case, seal the opening with a clean cloth.

-- Remove the bolts -1 and 2- and remove both of the camshaft adjusters.

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