Valve Shaft Seals, Removing And Installing, Cylinder Removed

Special tools and workshop equipment required 

• Puller - Valve Seal: 3364 
• Seal Installer - Valve Stem: 3365 
• Valve Keeper Tool Kit: VAS5161A 
• Valve Cotter Tool Kit - Guide Plate 19B: VAS5161/19B 
• Engine And Transmission Holder: VAS6095 
• Cylinder Head Tensioning Device: VAS6419 

Remove Valve Stem Seals 

-- 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 : VAS6419  in the : VAS6095  .

Fig 1: Identifying Air Cushion With Lever

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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 seal that will be removed.

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

-- Install the : VAS5161/19C  with the : VAS5161/12  as shown on the cylinder head.

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

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-- Insert the : VAS5161/3  in the guide plate and loosen the stuck valve retainers with a plastic mallet.

For Intake Side 

Fig 3: Identifying Engaging Device VAS 5161/6 With Installation Forks VAS 5161/5 Installed Into Guide Plate VAS 5161/19

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

-- Place the : VAS5161/8  in the : VAS5161/19B  .

-- Engage the : VAS5161/2  on the : VAS5161/6  .

For Exhaust Side 

Fig 4: Identifying Pressure Fork VAS 5161/2

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

-- 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  .

Fig 5: Identifying Valve Seal Removal Tool 3364

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Install Valve Stem Seals 

Fig 6: Identifying Plastic Sleeve And Valve Stem Seals

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-- Place the plastic sleeve -A- that is attached to valve stem seals -B- on valve stem.

-- 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 : 3365  .

-- Remove plastic sleeve.

-- Insert the valve spring and valve spring plate.

-- Install the : VAS5161A  as illustrated.

Intake Side 

Fig 7: Identifying Engaging Device VAS 5161/6 With Installation Forks VAS 5161/5 Installed Into Guide Plate VAS 5161/19

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Exhaust Side 

Fig 8: Identifying Pressure Fork VAS 5161/2

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NOTE:

If the valve retainers were removed from the assembly cartridge, they must then be inserted into the : VAS5161/18  .

Fig 9: Identifying Installation Cartridge VAS 5161/8

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Press the : VAS5161/8A  onto the insertion device from above and capture the valve retainers.

-- 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  .

Assemble in reverse order of disassembly. Note the following:

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