Camshaft Timing Chain, Removing From Camshafts, Cylinder Bank 1 (Right): Notes

For the following procedure the camshaft timing chain remains on the engine.

Special tools and workshop equipment required 

• Electronic Torque Wrench 3-60Nm:VAS 6583 
  Fig 1: Electronic Torque Wrench 3-60Nm

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• Locking Pins:T03006 
  Fig 2: Locking Pins

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• Crankshaft Locking Pin:T40069  (with the engine removed)
  Fig 3: Crankshaft Locking Pin T40069

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• Wrench - 21mm:T40263 
  Fig 4: Identifying Wrench - 21mm

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• Locking Pin:T10492 
  Fig 5: Identifying Locking Pin

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• Adapter:T40314 
  Fig 6: Adapter T40314

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• Camshaft Positioning Tool:T40331  , not illustrated
• Socket :T90000  , not illustrated
• Counterholder:T90001  , not illustrated
• Counterholder:T90002  , not illustrated
• Socket :VAS 261 001  , not illustrated
• Hazet 6423C (commercially available), not illustrated

Camshaft Locking Device:T40331  , Preparing

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• The lettering "A" on the Camshaft Positioning Tool:T40331/1  points forward.
• The Camshaft Positioning Tool:T40331/6  and :T40331/7  as well as the washers on the bolts :T40331/9  must be positioned using the alignment pins -arrows-.

-- Tighten the bolts hand-tight.

Removing

Preliminary work may be required depending on the model. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .

-- Remove the cylinder bank 1 upper timing chain cover. Refer to UPPER TIMING CHAIN COVERS, REMOVING AND INSTALLING .

-- Remove the right lower air duct pipe on the turbocharger. Refer to AIR DUCT PIPE, REMOVING AND INSTALLING .

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-- Using the Wrench - 21mm:T40263  and Adapter:T40314  , turn the crankshaft -arrow- until the vibration damper is at "TDC".

• The mark -1- or -2- on the camshaft adjusters must align with the corresponding locating tabs -arrows- on the camshaft housing. If necessary turn the crankshaft an additional turn.

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-- Pierce the exhaust camshaft plug -2- in the center with a screwdriver -1- -arrow- and carefully lift, at the same time do not damage the sealing surface.

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-- Repeat the procedure on the intake camshaft plugs.

-- Tighten the Adapter :T40331/2  on the camshaft housing to 9 Nm.

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• It must be easy to insert the Camshaft Lock :T40331/1  .

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• Do not use a hammer to install the camshaft positioning tool.

-- Insert the prepared Camshaft Positioning Tool :T40331/1  all the way in the camshafts. If necessary slightly turn the crankshaft.

• The Camshaft Positioning Tool :T40331/6  engages as shown in the flattened section -1- on the intake camshaft.
• The Camshaft Positioning Tool :T40331/7  engages as shown in the flattened position -2- on the exhaust camshaft.

-- Tighten the bolts -arrows- to 9 Nm.

TIP:

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The Counter Holder:T90001  can only be inserted in one position

-- To counterhold, position the Socket :VAS 261 001  on the corresponding camshaft adjuster using the Counterholder:T90001  and loosen the control valve -1- with the Socket E24:T90000  .

-- For reinstallation mark the camshaft adjuster to the camshafts using paint.

Procedures, where the engine is NOT removed:

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-- Insert the Locking Pin:T10492  on the groove -1- in the vibration damper all the way in the hole -arrow- in the belt pulley side sealing flange. If necessary push the crankshaft slightly back and forth.

Procedure, if the engine is removed due to preliminary work.

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-- Remove the plug.

-- Install the Crankshaft Locking Pin:T40069  in the hole and tighten to 20 Nm. If necessary push the crankshaft slightly back and forth.

Continuation:

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-- Push back the pistons of the chain tensioner -2- using a screwdriver -1- all the way back -arrow- and lock the chain tensioner using the Locking Pins:T03006  .

TIP:

The piston is lubricated with oil and can only be pushed back slowly by applying constant pressure.

-- Remove the control valves -1 and 2- and remove both camshaft adjusters.

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