Valve Stem Seals, Removing And Installing, Cylinder Head Removed

Special tools and workshop equipment required 

• Puller - Valve Seal: 3364 
  Fig 1: Identifying Puller - Valve 3364

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• Seal Installer - Valve Stem: 3365  for the valve stem seal with a single sealing lip. Refer to Figure.
  Fig 2: Identifying Seal Installer - Valve Stem 3365

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• Fitting Tool: T40376/1  for the valve stem seal with a double sealing lip. Refer to Figure.
  Fig 3: Exhaust side: Fitting Tool

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• Valve Cotter Tool Kit: VAS5161A 
  Fig 4: Valve Keeper Tool Kit VAS5161A

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• Valve Cotter Tool Kit - Guide Plate 19C: VAS5161/19C 
• Engine and Transmission Holder: VAS6095A 
  Fig 5: Engine And Transmission Holder

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• Cylinder Head Tensioning Device: VAS6419 
  Fig 6: Cylinder Head Tensioning Device

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• Assembly Tool: T40452  , not illustrated

Procedure 

-- 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.

-- Insert the : VAS6419  in the : VAS6095A  .

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

-- Connect the cylinder head tensioning device to 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.

Guide Plate, Reworking: 

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

-- If necessary, rework the : VAS5161/19C  -arrow- until the guide plate touches the cylinder head and the guide pin -1- is free.

-- Tighten the : VAS5161/19C  on the cylinder head as shown using the : VAS5161A/12  .

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

Intake Side: 

-- Install the : VAS5161/6  with the : VAS5161/5  in the center threads of the : VAS5161/19C  .

Exhaust Side: 

-- Install the : VAS5161/6  with the : VAS5161/5  in the outer threads of the : VAS5161/19C  .

Continuation: 

-- Insert the : VAS5161/8A  into the : VAS5161/19C  .

-- 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  .

• In order not to damage the valve stem seal -4- during installation, mount the Assembly Tool: T40452  -3- on the valve stem -2-.
  Fig 12: Insert The Valve Stem Seal In The 3365

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-- 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 into the seal installer -5- and carefully press it all the way onto the valve guide -1- over the Mounting Sleeve.

-- Remove the Assembly Tool.

-- Insert the valve spring and valve spring retainer.

-- Install the : VAS5161A  as shown.

Intake Side: 

Exhaust Side: 

Continuation: 

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

-- 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  .