Crankshaft at "TDC", Positioning

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

-- Remove the ignition coils with power output stages cylinder 1. Refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

-- Remove the cylinder 1 spark plug.

Adjusting the position of the crankshaft by installing the bolt:

-- Insert a screwdriver carefully in the spark plug opening in the direction of -arrow -, length of the shaft minimum 250 mm, so that the it contacts the piston crown.

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-- Turn the crankshaft in the direction of engine rotation to "BDC" for cylinder 1.

-- Turn the crankshaft in the direction of engine rotation again, so that the screwdriver in the direction of -arrow- is pushed upward and out 35 mm.

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-- Remove the plug for the "TDC" hole in the cylinder block. Refer to Tightening Specifications For Hole In The Rear Cylinder Block .

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-- Remove the plug for the "TDC" hole in the cylinder block.

If the :T10340 cannot be installed all the way, then the crankshaft is not in the correct position.
In this case, proceed as follows:
Remove the locking pin.
Turn the crankshaft 90° in the direction of engine rotation.
Install the :T10340 all the way into the cylinder block and tighten to 30 Nm.
Continue to turn the crankshaft in the direction of engine rotation until it stops.

-- Install the :T10340 all the way into the cylinder block and tighten to 30 Nm.

-- Turn the crankshaft all the way in direction of engine rotation.

The locking pin is touching the crankshaft counterweight.

NOTE:

The :T10340 locks the crankshaft only in direction of engine rotation.

-- Remove the oil pan upper section. Refer to OIL PAN UPPER SECTION, REMOVING AND INSTALLING .

-- Remove the Engine Speed Sensor -G28- -1-. Refer to Engine Speed Sensor -G28-, REMOVING AND INSTALLING .

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-- Remove the bolts -1 through 6-.

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-- Remove the bolts -1 through 3-.

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NOTE:

The bolts -4 and 5- are already removed.

NOTE:

The sealing flange and the sensor wheel are removed from the crankshaft together.

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-- Install the three M 6 x 35 bolts -arrows- into the sealing flange alternating from side to side maximum ¹ /₂ turn.

-- Remove the sealing flange -1- and the sensor wheel.

Sealing Flange with Sensor Wheel, Installing

NOTE:

The sealing flange with PTFE-seal is equipped with a sealing lip support ring -2-. This support ring serves the same function of a guide sleeve and must not be removed before installation.

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The sealing flange and sensor wheel -1- may not be separated or rotated after being removed from the replacement part packaging.

The sensor wheel -1- retains the installation position via being located on the locating pin of the :T10134 . Refer to Locating Pin .

The sealing flange and seal are one unit and may only be replaced together with the sensor wheel.

The :T10134 retains the installation position to the crankshaft via a guide pin, which is guided into the hole of the crankshaft. Refer to Guide Pin for Gasoline Engines (Red Handle) .

Overview of the :T10134 .

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A - Tension Surface

B - Nut

C - Assembly Bell

D -