Camshaft Timing Chain, Removing And Installing: Installing

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Requirements: 

• The crankshaft is at "TDC" ; the V-shaped cut-out on the three-layer chain sprocket points in an imaginary vertical line -arrows- centered between the camshaft chain sprockets.
• Three-layer chain sprocket locked with the :T10531/2  .

• Camshaft chain sprockets locked at "TDC" using the :T40271/1  and :T40271/2  .

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• The marks -arrows- must be positioned opposite each other.

-- Engage the camshaft timing chain with the painted links -arrows- on the camshaft pins as shown.

Fig 1: Camshaft Timing Chain And Camshaft Sprocket

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-- Camshaft timing chain on intake camshaft; mount the exhaust camshaft and the three-layer chain sprocket.

Fig 2: Camshaft Timing Chain And Intake Camshaft

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• The painted chain links must align with the markings on the chain sprockets -arrows-.

-- Insert the guide rail -2- and tighten the guide pin -1-.

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-- Insert the guide rail -1- and tighten the bolts -arrows-.

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NOTE:

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

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-- Reduce the pretension of the exhaust camshaft using the :T40266  or :T10567  in the direction of -arrow A- and pull the :T40271/1  off the chain sprocket splines in direction of -arrow B-.

-- Remove the exhaust camshaft in the direction of -arrow C- until the timing chain touches the guide rail -3-.

-- Hold the camshaft in this position, insert the tensioning rail -1- and tighten the guide pin -2-.

-- Remove the :T40271/1  .

-- Reduce the intake camshaft pretension using the :T40266  or :T10567  in the direction of -arrow A-, pull the :T40271/2  off the chain sprocket splines in direction of -arrow B- and bring the camshaft into its resting position.

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-- Remove the :T40271/2  .

-- Install the screws -arrows- and tighten. Tightening specification -item 4-  OVERVIEW - CYLINDER HEAD - List Item:Bolt.

Fig 3: Identifying Bolts

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-- Coat the holes -arrows- with engine oil.

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-- Check if the adapter sleeve -1- is installed.

Fig 4: Loosening Sequence Of Control Valve

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-- Attach the bearing mount and install the bolts -1 to 6- all the way by hand.

-- Remove the :T40267  .

Fig 5: Securing Chain Tensioner With T40267

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-- Tighten the bearing bracket bolts. Refer to Figure.

-- Install the oil pump chain.

Fig 6: Identifying Chain Tensioner

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-- Insert the chain tensioner -2- and tighten the guide pin -1-.

-- Remove the :T40011  . At the same time wire clip must make contact in the opening on the oil pan upper section -arrow-.

-- Checking Adjustment: 

Fig 7: Identifying Painted Chain Links Must Line Up With Markings On Chain Sprockets

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• The painted chain links must align with the markings on the chain sprockets -arrows-.

-- Install the control valves -item  ) OVERVIEW - CAMSHAFT TIMING CHAINS - CONTROL VALVE.

Fig 8: Identifying Assembly Tool - Turning Over Tool T10531/3

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-- Install the :T10531/4  and the :T10531/3  .

-- Turn the engine twice in the direction of engine rotation.

-- Remove the knurled nut and the turning over tool.

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

-- Remove 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 .

-- If work is performed on the chain drive, perform the "01 - mechanical engine, functions" listed adaptation. Refer to Vehicle Diagnostic Tester.