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.
Connect compressed air with at least 6 bar (87.02 psi) pressure.
Loosen stuck valve retainers using a -VAS5161/3A- and a plastic hammer.

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Intake Side:

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

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Exhaust Side:

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

Continuation:

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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.
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-.

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

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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Intake Side:

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Exhaust Side:

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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.