Camshaft Timing Chain, Removing From Camshafts: Removing

WARNING: This page is about a different car, the 2015 Audi S7, 2015 Audi RS 7, 2014 Audi S7, 2014 Audi RS 7, and 2013 Audi S7. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The camshaft timing chains stay on the engine in the following description.

-- Remove the timing chain guard, refer to TIMING CHAIN COVER, REMOVING AND INSTALLING .

Cylinder Bank 1 (Right):

-- Remove the right drive axle from the transmission flange shaft, refer to Drive Axle .

-- Remove the bolts -arrows- and the right heat shield -1-.

Fig 1: Identifying Subframe Heat Shield Bolts

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-- Remove the bolts -arrows- and remove the right drive axle heat shield.

Fig 2: Drive Axle Heat Shield Bolts

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-- Remove the air filter, refer to => 411.

-- Loosen the hose clamps to disconnect the hose for the EVAP canister system -1-.

Fig 3: Identifying Release Ring To Disconnect Fuel Line -2-

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-- Free up the hose.

NOTE:

The illustration shows the Installed position on an Audi S6/S7.

Ignore item -2-.

-- Disconnect the connector -1- from the EVAP Canister Purge Regulator Valve 1 -N80-.

Fig 4: Identifying Electrical Connector And Bolt

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-- Remove the bolt -arrow-.

-- Remove the nuts -1, 2- and the bolt -3-, free up the guide wire and move them to the side.

Fig 5: Remove The Nuts & Bolt

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-- Remove the double bolt -arrow- and then remove the shield -1-.

Fig 6: Remove Double Bolt & Shield

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-- Free up the turbocharger vacuum actuator hoses.

Fig 7: Identifying Vacuum Hose And Bolts

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-- Disconnect the vacuum hose -1-.

NOTE:

Do not remove ball head item -2-.

The illustration shows the Installed position on an Audi S6/S7.

Ignore -items 3 and 4-.

-- Disconnect the connectors -1, 2- and push the wires aside.

Fig 8: Locating Connectors

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-- Release and remove the sealing plug from the right camshaft housing -arrows- by turning it to the left.

Fig 9: Identifying Sealing Plug

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Cylinder Bank 2 (Left):

Fig 10: Identifying Cylinder Bank 2 Bolts

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-- Remove the ignition coil for cylinder "7", refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

-- Release and remove the sealing plug from the left camshaft housing -arrows- by turning it to the left.

Continuation for Both Cylinder Banks:

Fig 11: Identifying Crankshaft Turning Tool T40272

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Audi S6/RS6/RS7:

-- Remove the radiator, with the fan shroud, refer to RADIATOR, REMOVING AND INSTALLING .

Audi S7:

-- Remove the fan shroud, refer to FAN SHROUD, REMOVING AND INSTALLING .

Continuation for All Vehicles:

-- Position the Crankshaft Turning ToolT40272 onto the Wrench - 21mm T40263.

-- Attach the adapter to the bolts on the vibration damper.

The semi-round countersink -arrow A- on the Crankshaft Turning ToolT40272 must face the semi-round countersink -arrow B- on the vibration damper.

NOTE:

Ignore the notch on the Crankshaft Turning ToolT40272.

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

The threaded holes -arrows- in the camshaft must be visible through the openings in the camshaft housing that were previously sealed with the sealing plug.

Fig 12: Identifying Sealing Plug
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NOTE:

The right camshaft housing is shown in the illustration.

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

Cylinder Bank 1 (Right):

Fig 13: Identifying Cylinder Bank 1 Bolts

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-- If necessary, turn the crankshaft slightly back and forth to insert the camshaft locating tool T40264/1 into the right cylinder head and tighten -arrows-.

Tightening specification 12 Nm.

Cylinder Bank 2 (Left):

Fig 14: Identifying Cylinder Bank 2 Bolts

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-- If necessary, turn the crankshaft slightly back and forth to insert the Camshaft Locating ToolT40264/2 into the left cylinder head and tighten -arrows-.

Tightening specification 12 Nm.

Continuation for Both Cylinder Banks:

Fig 15: Identifying Camshaft Locating ToolT40264/3

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-- If necessary, turn the crankshaft slightly back and forth to insert the Camshaft Locating ToolT40264/3 by hand into the vibration damper opening and all the way into the cylinder block.

Cylinder Bank 1 (Right):

Fig 16: Identifying Locking PinT40071 And Screwdriver

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-- Press the right camshaft timing chain tensioner guide rails in as far as the stop using a screwdriver -1- and secure the chain tensioner with a Locking PinT40071.

NOTE:

The toothed belt tensioner is lubricated with oil and should only be compressed slowly by applying constant pressure.

Cylinder Bank 2 (Left):

Fig 17: Identifying Locking PinT40071 And Screwdriver Screwdriver

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-- Press the left camshaft timing chain tensioner guide rails in as far as the stop using a screwdriver -1- and secure the chain tensioner with a Locking PinT40071.

NOTE:

The toothed belt tensioner is lubricated with oil and should only be compressed slowly by applying constant pressure.

Continuation for Both Cylinder Banks:

Fig 18: Identifying Camshaft Locating ToolsT40264/1 and T40264/2 And Wrench - CamshaftT40269

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CAUTION:

The camshafts can get damaged.

The Camshaft Locating ToolsT40264/1 and T40264/2 must never be used as a counterholder to loosen the camshaft adjuster bolt or camshaft chain sprocket.

-- To counterhold, attach the Wrench - CamshaftT40269 to the relevant camshaft adjuster and loosen the bolt -1-.

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

CAUTION:

Danger of causing damage to the engine.

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

Cylinder Bank 1 (Right):

Fig 19: Identifying Camshaft Adjusters Bolts

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

-- Remove the camshaft timing chain from the gliding piece.

Cylinder Bank 2 (Left):

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

-- Remove the camshaft timing chain from the gliding piece.

Fig 20: Removing Bolts -1 And 2- By Counterholding With Wrench And Wrench - CamshaftT40269

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