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Home >> Audi >> 2009 >> Q7 4.2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (3.0L - Cylinder Head & VALVETRAIN - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB) >> 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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Fig 1: Chamfer Alignment Bushing With File
GWWA13-10053Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal. Note the following:

NOTE:

Replace any bolts that were tightened with an additional turn.

-- Remove the right upper alignment bushing from the cylinder block.

-- Grind the alignment bushing down at an angle as shown in the illustration.

-- Insert the alignment bushing in the cylinder block so the angled side faces up.

NOTE:

Because of the chamfer, the lower timing chain cover can be positioned more easily when the cylinder head is installed.

CAUTION:

Risk of contaminating the lubricating system.

  • Cover open parts of engine.
Fig 2: Cleaning Remaining Sealant With Rotating Plastic Brush
GWWA13-0590Courtesy of AUDI OF AMERICA, LLC
WARNING:

Danger of eye injury.

  • Wear protective eyewear.

-- Remove any sealant residue still on the timing chain guard lower section, cylinder block and cylinder head with a rotating plastic brush.

-- 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.

-- Clean old sealant out of the holes -arrow- in the cylinder head seals.

Fig 3: Cleaning Old Sealant From Holes In Cylinder Head Gaskets
GWWA13-10054Courtesy of AUDI OF AMERICA, LLC
NOTE:

With cylinder head installed, holes in cylinder head seal are only half visible.

CAUTION:

The cylinder head seal could be damaged.

  • Only bend ends of cylinder head seals slightly, do not kink.
NOTE:

A kinked cylinder head seal must be replaced.

-- Bend the end of the cylinder head seals down slightly in direction of -arrows- until the upper sealing surface of the seals and the cylinder head can be cleaned.

-- Clean the upper and lower cylinder head gaskets; they must free from oil and grease.

Fig 4: Bending Cylinder Head Gasket Ends Down
GWWA13-10140Courtesy of AUDI OF AMERICA, LLC
NOTE:

Note the expiration date of the sealing compound.

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

Fig 5: Cut Tube Nozzle At Front Marking
GWWA17-0081Courtesy of AUDI OF AMERICA, LLC

-- Lightly the coat top and bottom cylinder head seal sealing surfaces with lubricant by bending the seals down slightly again in direction of -arrows-.

Fig 6: Bending Cylinder Head Gasket Ends Down
GWWA13-10140Courtesy of AUDI OF AMERICA, LLC

-- Use a flat object such as a feeler gauge to coat the surface between the cylinder head and seal.

-- Fill the cleaned cylinder head seal holes -arrow- with sealant.

Fig 7: Cleaning Old Sealant From Holes In Cylinder Head Gaskets
GWWA13-10054Courtesy of AUDI OF AMERICA, LLC
NOTE:

Refer to Installing .

Fig 8: Identifying Second Sleeve
GWWA15-11304Courtesy of AUDI OF AMERICA, LLC
CAUTION:

There is a risk of sealant entering the hole for connecting the transmission.

  • Before positioning the lower timing chain cover, a sleeve -1- must be installed.
  • The sleeve should extend -a- = 3 mm above the sealing surface.
NOTE:

Do not replace the sleeve -1- with sleeve -2-. The diameter of the sleeves is different.

CAUTION:

The lubrication system could be plugged with excess sealant.

  • Do not apply sealant beads thicker than indicated.

-- Apply sealant beads -1 through 4- on the clean lower timing chain cover sealing surfaces as shown in the illustration.

Fig 9: Applying Sealant Beads (Version 2)
GWWA15-11299Courtesy of AUDI OF AMERICA, LLC
NOTE:

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

-- Insert the seals -arrows- in the grooves on the lower timing chain cover.

-- Position the lower timing chain cover, guiding it diagonally from below to the sealing surface on the cylinder block and cylinder head.

Fig 10: Identifying Lower Timing Chain Cover Bolt Loosening And Tightening Sequence
GWWA15-10503Courtesy of AUDI OF AMERICA, LLC

-- When positioning, ensure the cylinder head seals are not damaged.

-- Tighten the bolts. Refer to Figure.

Install in reverse order of removal. Note the following:

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

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

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

-- Install the upper coolant pipe. Refer to UPPER COOLANT PIPE, REMOVING AND INSTALLING .

-- Install the oil filter housing. Refer to OIL FILTER HOUSING, REMOVING AND INSTALLING .

-- Install the compressor. Refer to SUPERCHARGER, REMOVING AND INSTALLING .

-- Fill the engine oil and check the oil level. Refer to Maintenance, Diagnosis .