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

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

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

-- Install the :T40012 in the spark plug threads.

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

-- Loosen stuck valve retainers using a :VAS5161/3A and a plastic hammer.

Intake Side:

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-- Install the :VAS5161/6 with the :VAS5161/5 in the center threads of the :VAS5161A/19B .

Exhaust Side:

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

Continuation:

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

-- 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 .

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-- If the :3364 cannot be used because there is not enough space, drive the spring pin -arrow- out using a drift and remove the impact attachment.

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

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-- Place the drift -1- in the hole in the lower section of the removal tool.

-- Position the extractor lever on the puller and remove the valve stem seal in direction of -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 sealing lip.

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

-- Insert the valve stem seal in the Seal Installer - Valve Stem -5- and carefully press on over the Mounting Sleeve on the valve guide -1- all the way.

-- Remove the Mounting Sleeve.

-- Insert the valve spring and valve spring retainer.

-- Connect the :VAS5161A as shown.

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Continuation:

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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 :VAS5161/8 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.