Valve Stem Seals
(With the cylinder head installed)
Special Tools And Workshop Equipment 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 5161/19B
Removing
-- Remove the camshafts. Refer to CAMSHAFTS .
-- Remove roller rocker arms and place them on a clean surface. Make sure they are not interchanged.
-- Remove the spark plugs using the spark plug removal Tool 3122 B.
-- Install the guide plate for FSI engine VAS 5161/19B to the cylinder head using the knurled thumb screws M6 VAS 5161/12 as shown.
-- Adjust piston of the respective cylinder to Bottom Dead Center (BDC).
-- Install adapter T40012 into the spark plug threads and connect the compressed air of at least 6 bar positive pressure.
-- Loosen any stuck valve retainers using the punch VAS 5161/3 and a plastic mallet.
Intake Side:
-- Install the retainer VAS 5161/6 using guide forks M6/M8 with threaded studs VAS 5161/5 into the center thread in the guide plate for FSI engine VAS 5161/19B.
-- Install the assembly cartridge VAS 5161/8 into the guide plate for FSI engine VAS 5161/19B.
-- Attach 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 thread in the guide plate for FSI engine VAS 5161/19B.
-- Press the assembly cartridge VAS 5161/8 down. 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.
-- In the event the valve seal removal Tool 3364 cannot be used due to limited space, drive out the roll pin -arrow- using a drift and remove the impact device.
-- Install the lower part of the valve seal removal Tool 3364 onto the valve stem seal.
-- Insert a drift -1- into the hole in the lower part of the valve seal removal Tool 3364.
-- Using the drift -1- as a handle, pull out the valve stem seal in the -direction of the arrow-.
Installing
-- Place the plastic sleeve -A- on the valve stem to prevent damage to new valve stem seal -B-.
-- Lubricate the sealing lip of valve stem seal -B-, Insert it into the valve stem seal driver 3365, and carefully push it onto the valve guide.
-- Remove the plastic sleeve -A-.
-- Install the valve spring and valve spring retainers.
-- Install the valve cotters asm/disasm device VAS 5161 as shown:
-- Install the valve cotters asm/disasm device VAS 5161 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 Insertion device from above and capture the valve retainers.
-- Press down the assembly cartridge VAS 5161/8 with the pressure fork with lever for assembly cartridge VAS 5161/2 and turn the knurled thumb screw of 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 still pulled.
-- Remove the valve cotters asm/disasm device VAS 5161.
-- Install the spark plugs. Refer to IGNITION SYSTEM COMPONENT OVERVIEW .
-- Install the ignition coils with power output stages. Refer to IGNITION COIL WITH POWER OUTPUT STAGE .
Further installation is in the reverse order of removal.