Valve Stem Seals With Cylinder Hear Removed, Replacing: Procedure

-- Remove the camshafts. Refer to CAMSHAFTS .

-- Mark the allocation of the roller rocker lever and the hydraulic adjusting elements so they can be installed again.

-- If necessary, remove the roller rocker levers with the hydraulic adjusting elements and place them on a clean surface.

-- Mount the VAS 6419 into the VAS 6095.

Fig 1: Tensioning Cylinder Head On Tensioning Element VAS 6419

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-- Tension the cylinder head on the cylinder head tensioning device, as illustrated.

-- Connect the cylinder head tensioning device to the compressed air.

-- Slide the air cushion with the lever -arrow- under the combustion chambers onto the valve stem seal that will be removed.

-- Let enough compressed air flow into the air cushion until it contacts the valve plate.

-- Position the VAS 5161/3 on the valve spring plate and loosen the stuck valve retainers with a plastic mallet.

Fig 2: Placing Drift VAS 5161/3 On Valve Spring Plate And Loosening Stuck Valve Keepers Using Plastic Hammer

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-- Mount the VAS 5161/19B on the cylinder head.

Fig 3: Identifying VAS 5161/12

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-- Secure the guide plate with the VAS 5161/12.

-- Install VAS 5161/6 with VAS 5161/5 in guide plate.

Fig 4: Identifying Engaging Device VAS 5161/6, Installation Fork VAS 5161/5 And Guide Plate, Removal/Installation

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-- Slide VAS 5161/8 in guide plate.

-- Engage VAS 5161/2 on engaging device and press installation cartridge down.

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

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

-- Release the pressure fork.

-- Remove installation cartridge.

-- Unfasten guide plate and turn it aside.

-- Remove the valve spring and the valve spring plate.

-- Remove the valve stem seal with the 3364.

Fig 5: Identifying 3364

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Fig 6: Identifying Plastic Sleeve, New Valve Stem Oil Seals & Valve Stem Seal Driver 3365

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-- Lightly oil valve stem seal.

-- Slide valve shaft seal onto plastic sleeve.

-- Carefully press valve stem seal onto valve guide with 3365.

-- Remove plastic sleeve.

When the valve retainers were removed from the installation cartridge, they must be inserted in the valve retainer inserting tool next VAS 5161/18.

Fig 7: Identifying Installation Cartridge VAS 5161/8

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• The large diameter of the valve retainers point upward.

-- Press installation cartridge from above onto valve retainer inserting tool and capture retainer.

-- Insert valve spring and valve spring plate.

• Installed position, valve spring, refer to Figure.

-- Mount the VAS 5161/19B on the cylinder head.

Fig 8: Identifying Engaging Device VAS 5161/6, Installation Fork VAS 5161/5 And Guide Plate, Removal/Installation

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-- Insert installation cartridge in the guide plate.

-- Press the pressure fork down and pull the knurled screw up while turning left and right. This inserts the valve retainers.

-- Release the pressure fork with the knurled screw still raised.

-- Repeat the procedure on each valve.