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Home >> Audi >> 2013 >> S8 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 4.0L - Cylinder Head & VALVETRAIN - Engine Code(S): CEUA, CGTA, CTFA & CTGA >> 15 Cylinder Head, VALVETRAIN >> Timing Chain Cover >> Timing Chain Cover, Removing And Installing >> Right Timing Chain Cover, Removing And Installing >> Installing

Right Timing Chain Cover, Removing And Installing: Installing

NOTE:

Replace the O-rings.

Secure all hose connections with hose clamps of the same type as those equipped by the factory.

-- Remove any old sealant from the surfaces.

CAUTION:

Risk of contaminating the lubricating system.

  • Cover open parts of engine.
Fig 1: Cleaning Sealing Surfaces
GWWA17-10940Courtesy of AUDI OF AMERICA, LLC
WARNING:

Danger of eye injury.

  • Wear protective eyewear.

-- Remove the sealant residue on the timing chain cover -1- and cylinder head using a rotating plastic brush, for example.

-- Clean any oil or grease off the sealing surfaces.

-- Cut the tube nozzle at the front marking (nozzle diameter: about 2 mm (0.0787 in.)).

NOTE:

Note the expiration date of the sealing compound.

Fig 2: Cut Tube Nozzle At Front Marking (Nozzle Diameter Approx. 1 Mm)
GWWA17-0081Courtesy of AUDI OF AMERICA, LLC

-- Remove the intermediate pipe -2- from the right timing chain guard with the needle bearing drift.

-- Install the O-rings -1- in the intermediate pipe.

-- Insert the intermediate pipe into the right timing chain cover.

CAUTION:

The lubrication system could be plugged with excess sealant.

  • Do not apply sealant bead thicker than indicated.
NOTE: The timing chain cover must be installed within 5 minutes after applying the sealant.

-- Apply a sealant bead -arrow- to the clean sealing surfaces of the right timing chain cover as shown.

-- Position the right timing chain cover and tighten the bolts, refer to Figure.

The rest of the installation is performed in reverse order of removal, noting the following:

-- Install the upper rear coolant pipe, refer to OVERVIEW - COOLANT PIPES .

-- Install the vacuum pump, refer to VACUUM PUMP, REMOVING AND INSTALLING .

-- Connect the coolant hoses with the connector coupling, refer to Fig 4.

Fig 4: Connecting Coolant Hose Coupling
GWWA19-10572Courtesy of AUDI OF AMERICA, LLC
NOTE: Do not reuse used coolant.

-- Fill with coolant, refer to COOLANT, DRAINING AND FILLING .