Valve Stem Seals, Removing And Installing, Cylinder Head Removed

WARNING: This page is about a different car, the 2022 Audi SQ5, 2021 Audi SQ5, 2020 Audi SQ5, 2019 Audi SQ5, and 2018 Audi SQ5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Puller - Valve Seal:3365 for intake side
Seal Installer - Valve Stem:3365 for intake side
or (depending on the version/manufacturer of the valve stem seal) Fitting Tool:T40376/1 for intake side
Fitting Tool:T40376/2 for exhaust side
Valve Keeper Tool Kit:VAS5161A with Valve Keeper Tool Kit - Guide Plate V6/V8 TFSI :VAS5161A/38
Engine and Transmission Holder:VAS6095A
Cylinder Head Tensioning Device:VAS6419
Pliers - Valve Seal:VAS6770 for exhaust side

Tools, Preparing

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the M8 hex socket bolt with large bolt head diameter -arrows- (from the tool delivery package) on the bottom of the :VAS5161A/38 as shown.

The guide plate is centered to the cylinder head via the hex socket bolts.

Procedure

-- Mark the allocation of the roller rocker lever and the hydraulic lifter so they can be installed again.

-- Remove the roller rocker lever with the hydraulic lifter and place them on a clean surface.

-- Insert the :VAS6419 in the :VAS6095A .

Courtesy of AUDI OF AMERICA, LLC

-- Tension the cylinder head on the cylinder head tensioning device.

-- Connect the cylinder head tensioning device to compressed air.

-- Slide the air cushion with the lever -arrow- under the combustion chamber onto the valve stem seal that will be removed.

-- Let enough compressed air flow into the air cushion until it contacts the valve plate.

-- Align the :VAS5161A/38 on the cylinder head at the same time pay attention to the marking:

Courtesy of AUDI OF AMERICA, LLC

A - Exhaust side

B - Intake side

-- Tighten the guide plate bolts -arrows- to 9 Nm.

-- Position the Punch :VAS5161/3A on the valve spring plate and loosen the secured valve retainers with a plastic mallet.

-- Install the Retainer :VAS5161/6 with the :VAS5161/5 in the guide plate.

Courtesy of AUDI OF AMERICA, LLC

-- Insert the :VAS5161/8A into guide plate.

-- Engage the :VAS5161/2 at the engaging device and press the installation cartridge downward.

-- At the same time, turn the installation cartridge knurled bolt -arrow- right until points engage in the valve retainers.

-- Move the knurled bolt left and right slightly. This presses the valve retainers apart and captures them in the assembly cartridge.

The knurled bolt slides all the way in the assembly cartridge.

-- Release the pressure fork.

-- Remove the assembly cartridge.

-- For the reinstallation of the valve springs for the exhaust valve mark the installation position with pant.

-- Remove the valve spring and the valve spring retainer.

-- Remove the valve stem seal with the :3364 or the :VAS6770 .

Courtesy of AUDI OF AMERICA, LLC

Intake Side:

-- Use the :3364 for this.

Exhaust Side:

-- Use the :VAS6770 for this. If difficult to move, warm up using the :VAG1416 .

Intake Side:

Courtesy of AUDI OF AMERICA, LLC

-- Lightly oil the valve stem seal sealing lip -3-.

Depending on the version/manufacturer of the valve stem seal, use the :3365 or :T40376/1

-- Insert the valve stem seal in the seal driver -4- and carefully press on over valve stem sleeve -2- on the valve guide -1- all the way.

Exhaust Side:

Courtesy of AUDI OF AMERICA, LLC

-- Lightly oil the valve stem seal sealing lip -3-.

-- Insert the valve stem seal in the :T40376/2 -position 4- and carefully press on over valve stem sleeve -2- on the valve guide -1- all the way.

Continuation:

Fig 1: Identifying Installation Cartridge VAS 5161/8

Courtesy of AUDI OF AMERICA, LLC

If the valve keepers were removed from the assembly cartridge, they must then be inserted into the :VAS5161/18 .

The large diameter of the valve keepers point upward.

-- Press the cartridge from above onto the insertion device and valve keepers.

-- Insert the valve spring and the valve spring retainer:

Intake valve installation position. Refer to Figure.
Exhaust valve installation position. Refer to Figure.

-- Insert the :VAS5161/8A back into the :VAS5161A/38 .

Courtesy of AUDI OF AMERICA, LLC

-- Press the :VAS5161/2 down and pull the knurled screw -arrow- up while turning left and right. This inserts the valve retainers.

-- Release the pressure fork with the knurled bolt still raised.

-- Repeat the procedure on each valve.

Assembling

Assemble in the reverse order of removal. Note the following:

-- Make sure all the roller rocker levers lie correctly on the ends of the valve stems and are clipped onto the respective hydraulic lifters.

-- Install the camshaft housing. Refer to CAMSHAFT HOUSING, REMOVING AND INSTALLING .