Valve Stem Seals, Removing And Installing, Cylinder Head Installed

WARNING: This page is about a different car, the 2022 Audi Q7. 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

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 Cotter Tool Kit - Adapter: T40012

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

Fig 6: Valve Keeper Tool Kit VAS5161A
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Valve Cotter Tool Kit - Guide Plate 19C: VAS5161/19C
Assembly Tool: T40452 , not illustrated

Procedure

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

-- 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.

-- Remove the spark plugs using the : 3122B .

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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 : VAS5161/19C -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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-- Tighten the : VAS5161/19C on the cylinder head as shown using the : VAS5161A/12 .

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

-- Install the : 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 6.0 bar (87.02 psi) pressure.

-- Loosen stuck valve retainers using a : VAS5161A/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 : VAS5161/6 with the : VAS5161/5 in the center threads of the : VAS5161A/19C .

Exhaust Side:

Fig 11: Identifying Pressure Fork VAS 5161/2

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-- Install the : VAS5161/6 with the : VAS5161/5 in the outer threads of the : VAS5161A/19C .

Continuation:

-- Insert the : VAS5161/8A into the : VAS5161/19C .

-- Engage the : VAS5161/2 on the : VAS5161/6 .

-- Press down the : VAS5161/8A and at the same time turn the knurled thumb screw on the : VAS5161/8A to the right until the points engage in the valve retainers.

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

-- Release the : VAS5161/2 .

-- Remove the : VAS5161/8A .

-- Remove the valve stem seals using : 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.

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

-- 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 : VAS5161A 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 retainers were removed from the assembly cartridge, they must then be inserted into the : VAS5161/18 .
Press the : VAS5161/8A onto the insertion tool from above.

-- Press the : VAS5161/8A down with the : VAS5161/2 and rotate the cartridge knurled thumb screw back and forth while pulling up.

-- Release the : VAS5161/2 with the knurled thumb screw pulled.

-- Remove the : VAS5161A .

-- 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 .