SEAT Workshop Service and Repair Manuals

Replacing valve shaft seals. (With cylinder head installed) t  Removing → Anchor. t  Installing → Anchor.

Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Spanner -3122B-, see equivalent → Anchor

t	Extractor -3364-, see equivalent → Anchor

t	Hose clamp -3365-, see equivalent → Anchor

t	Measuring tool -T40012-, see equivalent → Anchor

t	Torque wrench -V.A.G 1331-, see equivalent → Anchor.

t	Valve insertion socket -VAS 5161-, please see Correspondence → Anchor

Removing –  Remove camshafts → Chapter.   Note To replace the valve stem seals of the exhaust valves for cylinders 3 and 4 the exhaust return valve -N18- must also be disassembled. –  Remove roller rocker arms and place on a clean surface. Put down in the sequence of their installation position (do not interchange the position of the roller rocker arms). –  Unscrew the spark plugs using spark plug spanner -3122B-.

–  Fasten the template -VAS 5161/19- to the cylinder head with theknurled bolts -VAS 5161/12-, as shown in the figure. –  Set piston of the respective cylinder to „bottom dead centre“. –  Screw in the measuring unit -T40012- in the threads of the spark plug and apply compressed air (min. 6 bar).

–  Release the seized spring buckles with the percussive mandrel -VAS 5161/3- and a plastic hammer.

–  Screw snap-in device -VAS 5161/6- with engaging forks -VAS 5161/5- into guide plate -VAS 5161/19-. –  Insert the assembly cartridge -VAS 5161/8- into the template -VAS 5161/19-. –  Attach the pressure nozzle -VAS 5161/2- to the part -VAS 5161/6-   Note

Hook the pressure fork -VAS 5161/2- on the exhaust side as shown in the figure. –  Push down the assembly cartridge -VAS 5161/8-. Turn the knurled bolt of the assembly cartridge -VAS 5161/8- to the right, until the points fit into the valve cotter pins. –  Move the knurled bolt lightly from side to side. In this way the valve cotter pins are separated by the pressure and fit into the cartridge. –  Release pressure fork -VAS 5161/2-. –  Take out assembly cartridge -VAS 5161/8-.

–  Extract the valve stem seals with the extractor -3364- .

–  If the extractor -3364- cannot be used due to paucity of space, drive out the pin -arrow - by using a driver and remove the percussion element.

–  Place the extractors -3364- on the valve step seal. –  Insert a driver -1- in the hole below on the extractor. –  Apply an installation lever to the fitting equipment and remove the valve stem seal -arrow-. Installing

–  To prevent damage to the new valve stem seals -B-, place the plastic sleeve -A- on the valve stem. –  Oil the sealing lip of the valve stem seal -B-, insert in the pressure tool -3365- and push it carefully over the valve guide. –  Remove the plastic sleeve-A-. –  Mount the valve spring and the cover of the valve spring. –  Mount the valve assembly set -VAS 5161- as shown in the figure.

Inlet side

Exhaust side   Note

t  If valve cotters have been removed from assembly cartridge, they need to be put into insertion device -VAS 5161/18- first. t  Press assembly cartridge -VAS 5161/8- onto insertion device from above and pick up valve cotters. –  Press down the assembly cartridge -VAS 5161/8- with the pressure prong -VAS 5161/2-, turn the knurled bolt on the cartridge from one side to another and pull it out upwards. –  De-tension the pressure fork -VAS 5161/2- on the knurled screw. –  Detach the value assembly -VAS 5161-. Installation is done in the reverse order. –  Install camshafts → Chapter.