Lower Timing Chain Cover, Removing And Installing: Installing

WARNING: This page is about a different car, the 2023 Volkswagen Atlas. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Note the expiration date of the silicone sealant.

The cover must be installed within five minutes after applying the silicone sealant.

Replace the bolts that are being tightened with an additional turn.

Replace gasket and O-ring.

Risk of contaminating the lubricating system. Cover open engine components.

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

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

-- Make sure both alignment bushings for centering the cover -arrows- are present.

Fig 1: Centering Cover Alignment Bushings

Courtesy of AUDI OF AMERICA, LLC

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

Fig 2: Cut Tube Nozzle At Front Marking

Courtesy of AUDI OF AMERICA, LLC

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

Fig 3: Identifying Silicon Sealing Compound

Courtesy of AUDI OF AMERICA, LLC

Sealant bead thickness: 2 to 3 mm

-- Immediately attach the cover and tighten the bolts.

Fig 4: 15 Bolts Timing Chain Cover Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Tighten the bolts -3- and -6- with an additional turn after installing the vibration damper. The bolts must be removed again to install the vibration damper. Note the different tightening specifications for steel bolts and aluminum bolts.

Step	Steel bolts	Tightening specification/additional turn for steel bolts
1.	-1 to 15-	8 Nm
2.	-1 to 15-	45°

Step	Aluminum bolts	Tightening specification/additional turn for aluminum bolts
1.	-1 to 15-	4 Nm
2.	-1 to 15-	45°

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

-- Install the Oil Pressure Regulation Valve -N428-. Refer to Oil Pressure Regulation Valve -N428-, REMOVING AND INSTALLING .

-- Install the ribbed belt tensioner. Refer to SUB-ASSEMBLY BRACKET, REMOVING AND INSTALLING .

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

-- Install the right front wheel housing liner. Refer to FRONT WHEEL HOUSING LINER, REMOVING AND INSTALLING .

-- Fill with engine oil and then check the level. Refer to => Engine; Draining; Oil Filter, Replacing and Engine Oil, Filling.

Tightening Specifications

Fig 5: Engine Support - Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC