Camshaft Timing Chain, Removing From Camshafts: Removing

WARNING: This page is about a different car, the 2015 Audi A6 Quattro, 2014 Audi A6 Quattro, 2013 Audi A6, and 2012 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

There is a risk of injury if the radiator fan turns on by itself.

The coolant fan can come on even when the ignition is turned off, for example, caused by the heat still in the engine compartment.

NOTE:

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

Even when only one cylinder head is worked on, the work procedure must nevertheless be performed on both cylinder banks.

-- Remove the left and right timing chain guards, refer to LEFT AND RIGHT TIMING CHAIN COVER, REMOVING AND INSTALLING .

-- Remove the left and right cylinder head cover, refer to CYLINDER HEAD COVER, REMOVING AND INSTALLING .

-- Remove the noise insulations, refer to FRONT NOISE INSULATION, REMOVING AND INSTALLING .

-- Remove the ribbed belt from the tensioner, refer to RIBBED BELT, REMOVING AND INSTALLING, ACCESSORY RIBBED BELT .

-- Place the Used Oil Collection and Extraction Unit SMN372500 under the engine.

Fig 1: Connecting/Disconnecting Coolant Hoses With Hose Clamps

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-- Remove the bolts -arrows- and lay aside the oil cooler with the coolant hoses -1 and 2- connected.

Fig 2: Disconnecting Connector For Wiring To Air Conditioning Compressor Clutch Solenoid

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WARNING:

Refrigerant can cause serious personal injury.

Do not open the A/C system refrigerant circuit.

-- Remove A/C compressor bolts -arrows-.

CAUTION:

Danger of damaging the refrigerant lines and hoses.

Do not stretch, kink or bend refrigerant lines and hoses.

-- Remove the A/C compressor from the bracket and with the lines still connected to the left longitudinal member, tie it up.

NOTE:

Ignore item -1-.

-- Insert the crankshaft socket T40058 guide pins as follows:

Fig 3: Identifying Guide Pin And Adapter T40058

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The large diameter -arrow 1- faces the engine.
The small diameter -arrow 2- faces the adapter.

-- Rotate the crankshaft in the direction of engine rotation in direction of -arrow- to "TDC" using the Crankshaft Socket T40058 and wrench.

Fig 4: Counter Hold Crankshaft Using Socket T40058

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The threaded holes -arrows- in the camshafts must face upward.

Fig 5: Identifying Camshaft Threaded Holes
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-- Install the Camshaft Clamp T40133 in both cylinder heads and tighten -arrows- to 25 Nm.

Fig 6: Identifying Camshaft Adjuster T40133

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NOTE:

The illustration shows the left cylinder head.

-- Remove the locking bolt -arrow- for the "TDC" marking crankshaft from the cylinder block.

Fig 7: Identifying Locking Bolt

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-- Install the Crankshaft Locking Pin T40069 in the hole and tighten to 20 Nm. Rotate the crankshaft -1- back and forth slightly to center the pin completely, if necessary.

Fig 8: Identifying Crankshaft Holder T40069 In Hole, Removal/Installation

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NOTE:

The chain tensioner for the camshaft timing chain is oil-dampened. Compress it by slowly applying constant pressure.

Fig 9: Identifying Left Timing Chain Tensioning

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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 Pin T40071.

-- 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 Pin T40071.

Fig 10: Identifying Right Timing Chain Tensioning

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For Camshaft Adjusters with Four Notches

Fig 11: Counterholding Affected Camshaft Adjuster (Camshaft Adjusters With Four Notches)

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CAUTION:

The camshafts can get damaged.

Do not use the Camshaft Clamp T40133 to counterhold when loosening the camshaft adjuster bolt or the camshaft sprocket.

-- To counterhold at the affected camshaft adjuster, position the Camshaft Adjuster Key T40079 with the Torque Wrench 1332 40-200 Nm VAG 1332 and Torque Wrench 1332 Insert - Open Ring Wrench - 24mm VAG 1332/9 and loosen the bolt -2-.

NOTE:

Ignore item -1- and -arrow-.

For Camshaft Adjusters with Three Notches

Fig 12: Counterholding Affected Camshaft Adjuster (Camshaft Adjusters With Three Notches)

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CAUTION:

The camshafts can get damaged.

Do not use the Camshaft Clamp T40133 to counterhold when loosening the camshaft adjuster bolt or the camshaft sprocket.

-- To counterhold at the affected camshaft adjuster, position the Wrench - Camshaft T40269 with the Torque Wrench 1332 40-200 Nm VAG 1332 and Torque Wrench 1332 Insert - Open Ring Wrench - 24 mm VAG 1332/9 and loosen the bolt -2-.

NOTE:

Ignore item -1- and -motion arrow-.

Continued for All

Fig 13: Counterhold Exhaust Camshaft With 3212

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-- To counterhold, place the Wrench - Pin Type 3212 on the camshaft chain sprocket and loosen the bolt using the Multipoint Socket T10035.

NOTE:

Ignore item -1- and -motion arrow-.

-- Mark the installation position of the camshaft adjuster and the camshaft chain sprocket in color for installing later.

Fig 14: Identifying Cylinder Cover Bolts -1 And 2-

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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.

-- Remove the bolts -1- and -2- on the left side of the cylinder cover, then remove the camshaft adjuster and the camshaft chain sprocket.

-- Mark the installation position of the camshaft adjuster and the camshaft chain sprocket in color for installing later.

-- Remove the bolts -1- and -2- on the right side of the cylinder cover, then remove the camshaft adjuster and the camshaft chain sprocket.

Fig 15: Identifying Right Camshaft Adjuster And Camshaft Sprocket Bolts

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