SEAT Workshop Service and Repair Manuals

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

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	Pressure tool -3365-, see equivalent → Anchor

t	Measuring tool -T40012-, see equivalent → Anchor

t	Torque wrench -VAG 1331-, see equivalent → Anchor.

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

t	Template -VAS 5161/19B-, see equivalent → Anchor

Removing –  Remove camshafts → Chapter. –  Remove roller rocker arms and place on a clean surface. Ensure that roller rocker arms are not mixed up. –  Unscrew the spark plugs using spark plug spanner -3122 B-.

–  Fasten the template -VAS 5161/19- with the knurled bolts -VAS 5161/12- to the cylinder head, as shown in the figure. –  Set piston of appropriate cylinder to „bottom dead centre“. –  Screw the measuring tool -T40012- into the thread and apply compressed air (min. 6 bar).

–  If the valve cones are tightly seated, they must be loosened using the awl -VAS 5161/3- and a plastic hammer.

–  Screw the locking element -VAS 5161/6- with the coupling prong -VAS 5161/5- into the template -VAS 5161/19-. –  Insert the assembly cartridge -VAS 5161/8- in the guide plate -VAS 5161/19-. –  Attach the pressure prong -VAS 5161/2- to the locking element -VAS 5161/6-.   Note

On the exhaust side, attach the pressure prong -VAS 5161/2-, as shown in the figure. –  Push down the assembly cartridge -VAS 5161/8-. Turn the knurled bolt of the assembly cartridge -VAS 5161/8- towards the right at the same time, until the ends fit into the valve cones. –  Move the assembly bolt slightly from side to side to loosen the cones from the valves, and catch them in the assembly cartridge. –  Release the pressure prong -VAS 5161/2-. –  Remove the assembly cartridge -VAS 5161/8-.

–  Remove the valve stem seals using the extractor -3364-.

–  If the extractor -3364- cannot be used on account of restricted space, knock out pin -arrow- with a punch and remove the impact extractor attachment.

–  Place the bottom side of the extractor -3364- on the valve stem seal. –  Insert an awl -1- into the hole, at the bottom of the extractor. –  Attach an iron bar to the assembly tool, and extract the valve stem seal -arrow-. Fitting

–  To prevent damage to the new valve stem seals -B-, attach plastic sleeve -A- to valve stem. –  Lubricate the lip of valve stem seal -B- with oil, position it on the pressure tool -3365- and carefully slide the seal onto the valve guide. –  Remove the plastic sleeve -A-. –  Insert valve spring and valve spring plate. –  Mount the valve assembly set -VAS 5161- as shown in the figure.

Inlet side

Exhaust side   Note

t  If the valve cones were extracted from the assembly cartridge, they must be placed on the base -VAS 5161/18-. t  Push the assembly cartridge -VAS 5161/8- down onto the base, and fit the valve cones. –  Push the assembly cartridge -VAS 5161/8- down with the pressure prong -VAS 5161/2-, and turn the knurled bolt of the assembly cartridge in and out continuously, pulling up at the same time. –  Release the pressure prong -VAS 5161/2- with the knurled bolt fastened. –  Detach the value assembly -VAS 5161-. Continue installation following reverse order for removing. –  Install camshafts → Chapter.