Left Timing Chain Cover, Removing And Installing

WARNING: This page is about a different car, the 2011 Audi Q7, 2010 Audi Q7, and 2009 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Hand drill with plastic brush attachment
Protective eyewear
Sealant.

Removal

Fig 1: Identifying Hose Clamps -1 & 2-, EGR Cooler Switch-Over Valve -3- And Bolts -Arrows-

Courtesy of AUDI OF AMERICA, LLC

-- Remove the left intermediate pipe. Refer to LEFT INTERMEDIATE PIPE, REMOVING AND INSTALLING .

-- Remove the EGR Cooler Switch-Over Valve 2 -N381- -3-.

-- Remove the bolts -arrows-.

-- Push the left rear coolant pipe to the side and remove the coolant hose -2-.

NOTE:

Ignore -item 1-.

-- Remove the bolts -3- and -4- and remove the exhaust gas recirculation pipes.

Fig 2: Exhaust Gas Recirculation Pipes And Bolts

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Ignore -items 1 and 2-.

-- Remove the bolts -1 through 4- and remove the left timing chain cover.

Fig 3: Identifying Bolts -1 Through 4- And Left Timing Chain Cover

Courtesy of AUDI OF AMERICA, LLC

Installation

Tightening specifications, refer to TURBOCHARGER OVERVIEW and EXHAUST GAS RECIRCULATION OVERVIEW .

NOTE:

Replace the bolts for the left timing chain cover.

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

CAUTION:

Risk of contaminating lubricating system.

Cover open parts of engine.

Fig 4: Cleaning Remaining Sealant With Rotating Plastic Brush

Courtesy of AUDI OF AMERICA, LLC

WARNING:

Danger of eye injury.

Wear protective eyewear.

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

-- 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 5: Cut Tube Nozzle At Front Marking

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

The lubrication system could be plugged with excess sealant.

Do not apply sealant bead thicker than specified.

-- Apply a sealant bead to the clean sealing surface of the left timing chain cover as shown in the illustration.

Fig 6: Appling Sealant Bead To Timing Chain Cover -1-

Courtesy of AUDI OF AMERICA, LLC

The groove -1- of sealing surface must be completely filled with sealant.
The sealant bead must be 1.5 to 2.0 mm above the sealing surface.

-- Install the seal -2-.

NOTE:

Note the expiration date of the sealing compound.

-- Cut the tube nozzle at the front marking (nozzle diameter: approximately 3 mm).

Fig 7: Cut Tube Nozzle At Front Marking

Courtesy of AUDI OF AMERICA, LLC

-- Apply a sealant bead with a 3 mm diameter to the transitions between the cylinder head and lower timing chain cover -arrows- as illustrated.

Fig 8: Applying Sealant Bead At -Arrow-

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

The lubrication system could be plugged with excess sealant.

Do not apply sealant bead thicker than specified.

NOTE:

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

-- Position the left timing chain cover and tighten the bolts, refer to Fig 9.

Fig 9: Left Timing Chain Cover Bolts

Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal. Note the following:

-- Install the left rear coolant pipes, refer to LEFT REAR COOLANT PIPE, REMOVING AND INSTALLING .

-- Install the left intermediate pipe, refer to LEFT INTERMEDIATE PIPE, REMOVING AND INSTALLING .