Valve Guide Seal: Service and Repair

Valve Stem Seals

(with the cylinder head installed)

Special tools, testers and auxiliary items required

• Spark Plug Removal Tool (3122 B)

• Valve Seal Removal Tool (3364)

• Valve Stem Seal Driver (3365)

• Adapter (T40012)

• Torque Wrench (5-50 Nm) (V.A.G 1331)

• Valve Cotters Asm/Disasm Device (VAS 5161)

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

Removing

- Remove the camshafts. Refer to => [ Camshaft ] Service and Repair.

- Remove the roller rocker arms and place them on a clean surface. Make sure that the roller rocker arms are not interchanged.

- Remove the spark plugs using the spark plug removal tool (3122 B).

- Secure the guide plate for FSI engines (VAS 5161/19B) to the cylinder head as shown, using the knurled thumb screws (VAS 5161/12).






- Adjust the piston of the respective cylinder to Bottom Dead Center (BDC).

- Install the adapter (T40012) into the spark plug threads and connect the compressed air (minimum 6 bar).






- Loosen any stuck valve retainers using the punch (VAS 5161/3) and a plastic mallet.

Intake Side






- Install the retainer (VAS 5161/6) using the guide forks M6/M8 with threaded studs (VAS 5161/5) into the center threads of the guide plate for FSI engine (VAS 5161/19B).

- Insert the assembly cartridge (VAS 5161/8) into the guide plate for FSI engine (VAS 5161/19B).

- Install the pressure fork with lever for assembly cartridge (VAS 5161/2) to the retainer (VAS 5161/6).

Exhaust Side






- Install the retainer (VAS 5161/6) using the guide forks M6/M8 with threaded studs (VAS 5161/5) into the outer threads in the guide plate for FSI engine (VAS 5161/19B).

- Press down the assembly cartridge (VAS 5161/8). At the same time, turn the knurled thumb screw on the assembly cartridge (VAS 5161/8) clockwise until the points engage in the valve retainers.

- Lightly move the knurled thumb screw back and forth, this causes the valve retainers to be pressed apart and captured in the assembly cartridge.

- Release the pressure fork with lever for assembly cartridge (VAS 5161/2).

- Take out the assembly cartridge (VAS 5161/8).

- Remove the valve stem seal using the valve seal removal tool (3364).






- If the valve seal removal tool (3364) cannot be used due to restricted clearance, drive the roll pin - arrow - out with a drift and remove the impact attachment.






- Place the lower part of the valve seal removal tool (3364) onto the valve stem seal.






- Insert a drift - 1 - into the bore in the lower part of the tool.

- Using the drift - 1 - as a lever, remove the valve stem seal in the - direction of the arrow -.

Installing






- Place the plastic sleeve - A - on the valve stem to prevent damage to the new valve stem seal - B -.

- Oil the sealing lip of the valve stem seal - B -, insert it into valve stem seal driver (3365) and carefully slide it onto the valve guide.

- Remove the plastic sleeve - A -.

- Insert the valve spring and valve spring plate.

Intake Side





- Install the valve cotters asm/disasm device (VAS 5161) components as shown.

Exhaust Side





- Install valve cotters asm/disasm device (VAS 5161) components as shown.

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






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

- Press down the assembly cartridge (VAS 5161/8) using the pressure fork with lever for assembly cartridge (VAS 5161/2) and turn the knurled thumb screw on the assembly cartridge back and forth while pulling it upward at the same time.

- Release the pressure fork with lever for assembly cartridge (VAS 5161/2) with the knurled thumb screw pulled.

- Remove the valve cotters asm/disasm device (VAS 5161) components.

Further installation is in the reverse order of removal.