Valve Stem Seals, Removing And Installing, Cylinder Head Installed

WARNING: This page is about a different car, the 2024 Audi Q3 and 2023 Audi Q3. 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:3122 B

Fig 1: Identifying Spark Plug Removal Tool 3122B
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Puller - Valve Seal:3364

Fig 2: Identifying Puller - Valve 3364
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Seal Installer - Valve Stem:3365 for the valve stem seal with a single sealing lip. Refer to Figure.

Fig 3: Identifying Seal Installer - Valve Stem 3365
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Fitting Tool:T40376/1 for the valve stem seal with a double sealing lip. Refer to Figure.

Fig 4: Exhaust side: Fitting Tool
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Valve Keeper Tool Kit:VAS 5161A with Guide Plate:VAS 5161/19C

Fig 5: Valve Keeper Tool Kit VAS5161A
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Valve Cotter Tool Kit - Adapter:T40012

Fig 6: Valve Cotter Tool Kit - Adapter
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Assembly Tool:T40452

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Procedure

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-- Remove the camshafts. Refer to CAMSHAFT, REMOVING AND INSTALLING .

-- Remove the spark plugs using the Spark Plug Removal Tool:3122 B .

Guide Plate, Reworking:

Fig 7: Identifying Valve Cotter Tool Kit - Guide Plate 19c VAS5161/19C

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-- Check if the opening -arrow- is present.

-- If necessary, rework the Guide Plate:VAS 5161/19C -arrow- until the guide plate touches the cylinder head and the guide pin -1- is free.

Continuation:

Fig 8: Identifying Valve Cotter Tool Kit - Guide Plate 19c VAS5161/19C

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-- Fasten the Guide Plate:VAS 5161/19C on the cylinder head as shown using the Knurled Thumb Screws M6:VAS 5161/12 .

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

-- Install the Valve Cotter Tool Kit - Adapter:T40012 in the spark plug threads.

Fig 9: Identifying Drift VAS 5161/3 And Plastic Mallet To Loosen Stuck Valve Keepers

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-- Connect compressed air with at least 6 bar (87.02 psi) pressure.

-- Loosen stuck valve retainers using a Punch:VAS 5161/3A and a plastic hammer.

Intake Side:

Fig 10: Identifying Engaging Device VAS 5161/6 With Installation Forks VAS 5161/5 Installed Into Guide Plate VAS 5161/19

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-- Install the Retainer:VAS 5161/6 with the Guide Forks:VAS 5161/5 in the center threads of the Guide Plate:VAS 5161/19C .

Exhaust Side:

Fig 11: Identifying Pressure Fork VAS 5161/2

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-- Install the Retainer:VAS 5161/6 with the Guide Forks:VAS 5161/5 in the outer threads on the Guide Plate:VAS 5161/19C .

Continuation:

-- Insert the Assembly Cartridge:VAS 5161/8A into the Guide Plate:VAS 5161/19C .

-- Engage the Pressure Fork With Lever for Assembly Cartridge:VAS 5161/2 on the Retainer:VAS 5161/6 .

-- Press down the Valve Cotter Tool Kit - Assembly Cartridge:VAS 5161/8A and at the same time turn the knurled thumb screw on the Valve Cotter Tool Kit - Assembly Cartridge:VAS 5161/8A to the right until the points engage in the valve keepers.

-- Move the knurled thumb screw back and forth slightly. This presses the valve retainers apart and captures them in the installation cartridge.

-- Release the Pressure Fork With Lever For Assembly Cartridge:VAS 5161/2 .

-- Remove the Assembly Cartridge:VAS 5161/8A .

-- Remove the valve stem seals using the Puller - Valve Seal:3364 .

Fig 12: Identifying Valve Seal Removal Tool 3364

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In order not to damage the valve stem seal -4- during installation, mount the Assembly Tool:T40452 -3- on the valve stem -2-.

Fig 13: Insert The Valve Stem Seal In The 3365
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-- Lightly oil the valve stem seal sealing lip.

-- Insert the valve stem seal into the seal installer -5- and carefully press it all the way onto the valve guide -1- over the Mounting Sleeve.

-- Remove the Assembly Tool.

-- Insert the valve spring and valve spring retainer.

-- Install the Valve Keeper Tool Kit:VAS 5161A as shown.

Intake Side:

Fig 14: Identifying Engaging Device VAS 5161/6 With Installation Forks VAS 5161/5 Installed Into Guide Plate VAS 5161/19

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Exhaust Side:

Fig 15: Identifying Pressure Fork VAS 5161/2

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Continuation:

Fig 16: Identifying Installation Cartridge VAS 5161/8

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If the valve keepers were removed from the assembly cartridge, they must then be inserted into the Valve Insertion Device:VAS 5161/18 .
Press the Valve Cotter Tool Kit - Assembly Cartridge:VAS 5161/8A onto the insertion tool from above.

-- Press the Valve Keeper Tool Kit Assembly Cartridge:VAS 5161/8 down with the Valve Keeper Tool Kit Pressure Fork with Lever for Assembly Cartridge:VAS 5161/2 and rotate the cartridge knurled thumb screw back and forth while pulling up.

-- Release the Pressure Fork with Lever for Assembly Cartridge:VAS 5161/2 with the knurled thumb screw pulled.

-- Remove the Valve Keeper Tool Kit:VAS 5161A .

-- Repeat the procedure on each valve.

Assembling

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

-- Install the camshafts. Refer to CAMSHAFT, REMOVING AND INSTALLING .

-- Install the spark plugs. Refer to OVERVIEW - IGNITION SYSTEM .