Valve Stem Seals, Removing And Installing, Cylinder Head Installed: Notes

WARNING: This page is about a different car, the 2018 Audi S6, 2017 Audi S6, and 2016 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Spark Plug Removal Tool :3122B
Puller - Valve Seal :3364
Seal Installer - Valve Stem :3365
Valve Keeper Tool Kit :VAS5161A with Valve Cotter Tool Kit - Guide Plate 19c :VAS5161/19C or as an alternative Valve Cotter Tool Kit - Guide Plate 19B :VAS5161/19B
Valve Cotter Tool Kit - Punch :VAS5161/3
Valve Cotter Tool Kit - Knurled Thumb Screws :VAS5161/12
Valve Keeper Tool Kit - Pressure Fork :VAS5161/2
Guide Forks M6/M8 with Valve Cotter Tool Kit - Threaded Studs :VAS5161/5
Valve Cotter Tool Kit - Retainer :VAS5161/6
Valve Cotter Tool Kit - Assembly Cartridge :VAS5161/8
Valve Keeper Tool Kit - Valve Insertion Device :VAS5161/18
Valve Cotter Tool Kit - Adapter :T40012
Mounting Sleeve. Refer to parts information

Reworking the :VAS5161/19C :

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NOTE:

In place of the :VAS5161/19C , the :VAS5161/19B may also be used. To do this, the following reworking must be completed as follows:

-- Lengthen the long opening to 2 mm as shown in the illustration.

NOTE:

For this application, the guide plate is only attached to the cylinder head with a knurled bolt.

-- Remove all of the left and right camshafts. Refer to CAMSHAFT, REMOVING AND INSTALLING .

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

-- If necessary, remove the roller rocker levers with the hydraulic adjusting elements and place them on a clean surface.

-- Remove spark plugs with :3122B .

-- Set the piston for the respective cylinder to "bottom dead center (BDC)".

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

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-- Place the : VAS5161/19C on the cylinder head.

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-- Secure the guide plate with the : VAS5161/12 .

-- Install the :T40012 with sealing ring in the spark plug thread and tighten by hand.

-- Connect the adapter to the compressed air using a commercially available intermediate piece and give steady pressure.

Minimum pressure: 6 bar (87 psi) positive pressure.

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

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-- Push :VAS5161/8 into guide plate.

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

-- At the same time, rotate the cartridge knurled screw right until points engage in valve retainers.

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

-- Release the pressure fork.

-- Remove the cartridge.

-- Unfasten guide plate and turn it aside.

Pressurized air hose remains connected.

-- Remove the valve spring and the valve spring plate.

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

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If the :3364 cannot be used on some valve stem seals due to restricted clearance, proceed as follows.

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-- Drive out the roll pin in direction of -arrow- on the puller with a drift and remove the impact puller attachment.

-- Position the lower part of the :3364 on the valve stem seal.

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-- Secure the puller with a drift or cotter pin drive -1- as shown in the illustration.

-- Position the valve lever on the puller and remove the valve stem seal -arrow-.

In order not to damage the valve stem seal -4- during installation, mount the Mounting Sleeve -3- on the valve stem -2-.

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-- Lightly oil the valve stem seal.

-- Insert the valve stem seal in the :3365 and carefully press on over the Mounting Sleeve on the valve guide -1- all the way.

-- Carefully press the valve stem seal onto the valve guide with the :3365 .

-- Remove the Mounting Sleeve.

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

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The large diameter of the valve retainers point upward.

-- Press the cartridge from above onto the insertion device and capture retainers.

-- Insert the valve spring and the valve spring plate, for allocation refer to appropriate service information. .

-- Attach the :VAS5161/19C onto the cylinder head again.

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-- Insert installation cartridge in guide plate.

-- Press the pressure fork down and pull the knurled screw up while turn left and right. This inserts the valve retainers.

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

-- Repeat the procedure on each valve.