Upper Timing Chain Cover

Special tools and workshop equipment required

Hose Clip Pliers VAS 6362
Hand drill with plastic brush attachment
Protective eyewear
Sealant

Removing

Fig 1: Identifying Air Filter Housing Component Location

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Wire routing and mounting in the engine compartment. Refer to LINES, ROUTING AND SECURING .

-- Remove the air filter housing. Refer to Removal and Installation .

-- Disconnect the connectors -1 and 2-.

Fig 2: Locating Knock Sensor Connectors, Nuts And Bolts -Arrows-

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-- Remove the nuts and bolts -arrows- and lay the mount for the connector to the side.

-- Remove the front coolant pipes. Refer to FRONT COOLANT PIPES .

-- Remove the left coolant pipe. Refer to LEFT COOLANT PIPE .

-- Disconnect the connector -2- from the engine coolant temperature sensor -G62-.

Fig 3: Disconnecting Engine Coolant Temperature Sensor Connector

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-- Loosen the clamp -3- and remove the coolant hose.

-- Remove the nut -arrows- and lay the coolant support along with sealed coolant hose -1- off to the side.

-- Remove the bolts -arrows- and remove the bracket -1-.

Fig 4: Identifying Bracket & Bolts

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-- Remove the bolts in descending order from -12 to 1-, then carefully loosen the timing chain guard upper section from the bonding.

Fig 5: Identifying Upper Timing Chain Cover, Tightening Sequence

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-- Drive out the seal from the timing chain guard upper section, refer to UPPER TIMING CHAIN COVER SEAL .

Installing

CAUTION:

Risk of contaminating lubricating system.

Cover open parts of engine.

WARNING:

Danger of eye injury.

Wear protective goggles.

-- Remove any sealant residue on the timing chain cover, cylinder block and cylinder head, for example, using a rotating plastic brush.

Fig 6: Identifying Rotating Plastic Brush To Remove Sealant Residue From Sealing Flange, Cylinder Block And Upper Part Of Oil Pan

Courtesy of AUDI OF AMERICA, LLC

-- Press in the new seal for the timing chain guard upper section. Refer to UPPER TIMING CHAIN COVER SEAL .

-- Clean the sealing surfaces; they must be free of oil and grease.

NOTE:

Note the expiration date of the sealing compound.

-- Cut the tube nozzle at the front marking (nozzle diameter approximately 1.5 mm).

Fig 7: Cutting Tube Nozzle At Front Marking (Nozzle Diameter Approx. 1.5 mm)

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Fig 8: Applying Sealant Bead As Depicted On To Clean Sealing Surface Of Chain Case Cover

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CAUTION:

The lubrication system could be plugged with excess sealant.

Do not apply sealant bead thicker than indicated.

-- Apply the sealant bead -A- to the clean sealing surfaces on the timing chain guard upper section as shown in the illustration.

Thickness of sealant bead: 1.5 to 2.0 mm.

NOTE:

The timing chain guard upper section must be installed within 5 minutes after applying the sealant.

-- Install the timing chain guard upper section and tighten the bolts. Refer to Figure.

Fig 9: Identifying Upper Timing Chain Cover, Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal paying attention to the following:

-- Install coolant supports. Refer to COOLANT PIPES OVERVIEW .

-- Install the left coolant pipe. Refer to LEFT COOLANT PIPE .

-- Install the front coolant pipes. Refer to FRONT COOLANT PIPES .