Valve Stem Seals, Removing And Installing With Cylinder Head Removed: Procedure

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

-- 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.

-- Insert the Cylinder Head Tensioning Device:VAS6419  in the Engine and Transmission Holder:VAS6095  .

Fig 1: Placing Cylinder Head On Cylinder Head Tensioning Device VAS6419

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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 chamber onto the valve stem seals that will be removed.

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

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

Fig 2: Identifying Special Tool - Drift VAS 5161/3

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-- Place Valve Cotter Tool Kit - Guide Plate:VAS5161/19B  from Valve Keeper Tool Kit:VAS5161A  on the cylinder head.

Fig 3: Identifying Guide Plate VAS 5161/19B Positioned On Cylinder Head

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-- Secure the guide plate with the Valve Cotter Tool Kit - Knurled Thumb Screws:VAS5161/12  .

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

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

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-- Push installation Valve Cotter Tool Kit - Cartridge:VAS5161/8  into guide plate.

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

-- At the same time, rotate the 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 cartridge.

-- Release the pressure fork.

-- Remove the cartridge.

-- Unfasten guide plate and turn it aside.

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

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

Fig 5: Identifying 3364

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-- Position the valve lever on the puller and remove the valve stem seal -arrow-.

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

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-- Lightly oil the valve stem seal.

-- Slide the valve stem seal onto the plastic sleeve.

-- Carefully press the valve stem seal onto the valve guide with the Seal Installer - Valve Stem:3365  .

-- Remove the plastic sleeve again.

If the valve retainers were removed from the installation cartridge, they must be inserted into the valve insertion device Valve Cotter Tool Kit - Valve Insertion Device:VAS5161/18  next.

Fig 7: Identifying Installation Cartridge VAS 5161/8

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• The large diameter of the valve retainers point upward.

-- Press assembly cartridge from above onto valve insertion device and capture keepers.

-- Insert valve spring and valve spring plate.

• Installed position, valve spring. Refer to Figure.

-- Install The Guide Plate 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 guide plate.

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

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

-- Repeat the procedure on each valve.