Valve Stem Seals, With Cylinder Head Removed

Valve Stem Seals, with Cylinder Head Removed

Special tools, testers and auxiliary items required

• Valve Seal Removal Tool (3364)

• Valve Stem Seal Driver (3365)

• Valve Retainer Disassembly and Assembly Device (VAS 5161)

• Guide Plate for FSI Engine (VAS 5161/19B)

• Engine and Transmission Holder (VAS 6095)

• Knurled Bolts (VAS 5161/12)

• Cylinder Head Tensioning Device (VAS 6419)

Procedure

- Remove the camshafts. Refer to => [ Camshafts ] 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).

- 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.

- Tighten the (VAS 5161/19B) on the cylinder head as shown using the (VAS 5161/12).






- Insert the drift (VAS 5161/3) in the guide plate and loosen the stuck valve retainers with a plastic mallet.

Intake Side






- Install the engaging device (VAS 5161/6) with the installation fork (VAS 5161/5) in the center threads of the (VAS 5161/19B).

- Insert the installation cartridge (VAS 5161/8) in the (VAS 5161/19B).

- Engage the pressure fork (VAS 5161/2) on the engaging device (VAS 5161/6).

Exhaust Side






- Install the (VAS 5161/6) with the (VAS 5161/5) in the outer threads of the (VAS 5161/19B).

- Press the (VAS 5161/8) down while rotating its knurled bolt to the right until the points engage in the valve retainers.

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

- Release the pressure fork (VAS 5161/2).

- Remove the (VAS 5161/8).

- Remove valve stem seals using (3364).






Valve Stem Seals, Installing






Risk of damage when installing valve stem seals.

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

- 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.

- Insert the valve spring and valve spring plate.

- Install the (VAS 5161) as illustrated.

Intake Side





Exhaust Side





• If the valve retainers were removed from the installation cartridge, they must be inserted into valve insertion device (VAS 5161/18) next.






• Press the installation cartridge (VAS 5161/8) onto the insertion device from above and capture the valve retainers.

- Press the (VAS 5161/8) down with the (VAS 5161/2) and rotate the cartridge knurled bolt back and forth while pulling up.

- Release the (VAS 5161/2) with the knurled bolt pulled.

- Remove the (VAS 5161).

Assemble in reverse order of disassembly. Note the following:

- Install the camshafts. Refer to => [ Camshafts ] Camshafts.