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

WARNING: This page is about a different variant/trim than selected.

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

-- Cylinder 1 intake side: remove the bolts -arrows- and also remove the engine lifting eye -1-.

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

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-- Set the piston for the respective cylinder to "bottom dead center (BDC)", to do so, turn the crankshaft at the hex fitting of the Vibration Damper Assembly Tool - Turning Over Tool: T10531/3 .

Fig 1: Identifying Assembly Tool - Turning Over Tool T10531/3

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

Fig 2: Identifying Valve Cotter Tool Kit - Guide Plate 19c VAS5161/19C

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-- If necessary, rework the Valve Cotter Tool Kit - Guide Plate 19C: VAS5161/19C -arrow- until the guide plate contacts the cylinder head and the guide pin -1- is free.

-- Align the guide plate on the cylinder head at the same time pay attention to the markings:

A -

Exhaust Valves

E -

Intake Valves

-- Secure the Valve Cotter Tool Kit - Guide Plate 19C: VAS5161/19C using the Valve Cotter Tool Kit Knurled Thumb Screws M6: VAS5161/12 .

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

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

Minimum pressure: 6 bar (87.02 psi)

-- Position the Valve Cotter Tool Kit - Punch: VAS5161/3A on the valve spring and loosen the stuck valve retainers with a plastic mallet.

-- Install the Valve Cotter Tool Kit - Retainer: VAS5161/6 with the Guide Forks M6/M8 with Valve Cotter Tool Kit - Threaded Studs: VAS5161/5 in the guide plate.

Fig 3: Identifying Valve Cotter Tool Kit - Guide Plate 19c VAS5161/19C

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-- Push the Valve Cotter Tool Kit - Assembly Cartridge: VAS5161/8A into the guide plate.

-- Engage the Valve Keeper Tool Kit - Pressure Fork: VAS5161/2 at the engaging device and press the installation cartridge downward.

-- At the same time, turn the installation cartridge knurled bolt right until points engage in the valve retainers.

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

-- Release the pressure fork.

-- Remove the assembly cartridge.

-- Remove the guide plate and turn it aside.

The pressurized air hose remains connected.

-- Remove the valve spring and the valve spring retainer.

-- Remove the valve stem seal with the Puller - Valve Seal: 3364 .

Fig 4: Identifying Valve Seal Removal Tool 3364

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