Installing (Adjusting Valve Timing)

Fig 1: Locating Guide Rail & Bolts

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• Tightening specifications, refer to TIMING CHAIN COVERS ASSEMBLY OVERVIEW , Figure and TIMING CHAIN COMPONENT OVERVIEW .

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

-- Check again if crankshaft is at "TDC" marking -arrow-.

Fig 2: Identifying Crankshaft At Vibration Damper Securing Bolt In Engine At TDC Cyl. 1

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-- Verify camshaft TDC position:

• Cams -A- of cylinder 1 must face each other.
  Fig 3: Camshaft Lobes For Cylinder Facing Each Other

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• It must be possible to insert camshaft bar T10068 A into both shaft grooves.
  Fig 4: Identifying Camshaft Bar T10068 A Engage In Shaft Grooves

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-- If necessary, turn camshafts at hex head surfaces -arrows- to correct position using open end wrench SW 32.

Fig 5: Locating Counter-Hold Area On Camshaft

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-- If necessary, rotate camshaft at hex head -arrows- with open-end spanner into correct position.

Fig 6: Camshaft Timing Adjusters Positioned On Camshaft Mountings

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-- First install intake side camshaft adjuster:

Fig 7: Identifying Sensor Wheel Turned To Right At Intake Camshaft Adjuster

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-- Rotate sensor wheel -1- clockwise in camshaft adjuster as far as stop -arrow-.

-- Hand tighten intake side camshaft adjuster in this position to intake camshaft.

Fig 8: Identifying Alignment Of Intake Camshaft Adjuster With Left Notch On Control Housing

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• Contact surface of sensor wheel at bolt head must be dry when installing.
• The "24E" marking -1- and the tooth behind it must align with notch -2- in control housing. Markings on control housing Figure.

-- Lay camshaft timing chain in this position tightly against intake side camshaft adjuster sprocket.

-- Starting with the toothed that has the "24E" marking, count exactly 16 rollers to the right on the timing chain. Mark this roller with a color marker.

Fig 9: Identifying Small Offset Between Mark And Notch

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-- Now insert exhaust camshaft adjuster "32A" with tooth at arrow marking -1- into camshaft roller chain so that the exact, previously counted 16 rollers lie between marking "24E" and "32A" and markings -1- and -2- align.

Fig 10: Identifying Alignment Of Mark On Exhaust Camshaft Adjuster With Left Notch On Control Housing

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-- Exhaust camshaft adjuster must be able to be inserted easily on exhaust camshaft and be tightened hand-tight.

-- Check the position of both camshaft adjusters one more time for correct adjustment.

Fig 11: Identifying Small Offset Between Mark And Notch

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-- Remove T10068 A.

Fig 12: Identifying Tools To Loosen Intake Camshaft Adjuster Bolt

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-- Tighten bolt on camshaft adjuster intake side by counter-holding with open-end spanner on camshaft hex head.

-- Tighten bolt on camshaft adjuster exhaust side by counter-holding with open-end wrench on camshaft hex head.

Fig 13: Identifying Tools To Loosen Exhaust Camshaft Adjuster Bolt

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Fig 14: Identifying Vibration Damper And Counter-Holder Tool T10069

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-- Rotate crankshaft 2 revolutions in direction of engine rotation at vibration damper bolt and place at "TDC" marking -arrow-.

Fig 15: Identifying Crankshaft At Vibration Damper Securing Bolt In Engine At TDC Cyl. 1

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• At the same time, the T10068 A must engage in both shaft grooves.
  Fig 16: Identifying Camshaft Bar T10068 A Engage In Shaft Grooves

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-- If camshaft bar cannot be engaged, adjust timing again.