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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> External Pages >> Different car >> Section 41 (3.0L - Cylinder Head & VALVETRAIN - Engine Code: CNRB) >> 15 Cylinder Head, VALVETRAIN >> Chain Drive >> Lower Timing Chain Cover, Removing And Installing >> Installing

Lower Timing Chain Cover, Removing And Installing: Installing

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-- Remove old sealant form the grooves in the timing chain guard lower section as well as from the sealing surfaces.

CAUTION:

Risk of contaminating the lubricating system.

  • Cover open parts of engine.
WARNING:

Danger of eye injury.

  • Wear protective eyewear.

-- Remove any remaining sealant on the lower timing chain cover -1- and cylinder block using, for example, a rotating plastic brush.

Fig 1: Cleaning Sealing Surfaces
GWWA17-10940Courtesy of AUDI OF AMERICA, LLC

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

-- Clean the threaded holes in the cylinder block for connecting the engine and transmission using a thread tap before installing the transmission.

NOTE:

Pay attention to the expiration date of the sealant.

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

Fig 2: Cut Tube Nozzle At Front Marking
GWWA17-0081Courtesy of AUDI OF AMERICA, LLC

-- Insert the sealing piece -arrows- without sealant.

Fig 3: Timing Chain Cover Sealant Location
GWWA15-11715Courtesy of AUDI OF AMERICA, LLC
CAUTION:

The lubrication system could be plugged with excess sealant.

  • Do not apply sealant bead thicker than indicated.

-- Apply sealant beads to the clean sealing surface of the lower timing chain cover as shown in the illustration.

NOTE:

The timing chains cover must be installed within 5 minutes after applying the sealant

-- Check whether the 2 alignment bushings are present in cylinder block, install if necessary.

-- Install the lower timing chain cover and tighten the bolts. Refer to Figure.

Fig 4: Lower Timing Chain Cover, Tightening Specifications and Sequence
GWWA15-11008Courtesy of AUDI OF AMERICA, LLC

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

-- Install the crankshaft seal on the transmission side. Refer to CRANKSHAFT SEAL, REPLACING, TRANSMISSION SIDE .

-- Install the upper timing chain covers. Refer to TIMING CHAIN GUARD UPPER SECTION, REMOVING AND INSTALLING .

-- Install the turbocharger bracket. Refer to OVERVIEW - TURBOCHARGER .

-- Install the left exhaust manifold. Refer to LEFT EXHAUST MANIFOLD, REMOVING AND INSTALLING .

-- Install the right exhaust manifold. Refer to RIGHT EXHAUST MANIFOLD, REMOVING AND INSTALLING .

-- Install the turbocharger. Refer to TURBOCHARGER, REMOVING AND INSTALLING .

-- Install the drive plate. Refer to DRIVE PLATE, REMOVING AND INSTALLING .

-- Clean the threaded holes in the cylinder block for connecting the engine and transmission using a thread tap before installing the transmission.