Lower Timing Chain Cover, Replacing: Installing

• Replace bolts that were tightened with an additional turn after removing them.
• Replace the lower timing chain cover and seal after removal.

-- Cover the open engine components with a clean cloth.

-- Remove any sealant residue on the cylinder block using a flat blade scraper.

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

-- Check that both alignment pins -arrows- for centering the cover are present.

Fig 1: Centering Cover Alignment Bushings

Courtesy of AUDI OF AMERICA, LLC

• Be sure to check the expiration date of the sealant.
  Fig 2: Cut Tube Nozzle At Front Marking

  Courtesy of AUDI OF AMERICA, LLC

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

Fig 3: Identifying Silicon Sealing Compound

Courtesy of AUDI OF AMERICA, LLC

-- Apply the sealant on the clean sealing surface -arrow 1- and on the edges -arrows 2- of the new cover.

• Sealant bead thickness: 2 to 3 mm.
• The cover must be installed within five minutes after the sealant has been applied.

-- Immediately attach the cover and tighten the bolts. Refer to Figure.

• After installing the cover, allow the sealant to harden for approximately 30 minutes. Only afterward may the engine oil be replenished.

-- Install the vibration damper. Refer to VIBRATION DAMPER, REMOVING AND INSTALLING .

-- Install the ribbed belt tensioner. Refer to RIBBED BELT TENSIONER, REMOVING AND INSTALLING .

-- Fill the engine oil and check the oil level. Refer to ENGINE OIL .

-- Install the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .