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Valve control: repairs > < Checking valve guides

Leon Mk2

Renewing valve stem seals
Renewing valve stem seals
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  counterhold -2036-, see equivalent → Anchor
t  Extractor -3364-, see equivalent → Anchor
t  Valve lever -VW 541/1A-, see equivalent → Anchor with pressure element -VW 541/7-, see equivalent → Anchor
t  Hose clamp -VW 653/3-, see equivalent → Anchor
t  Hose clamp -3365-, see equivalent → Anchor

removing
(With cylinder head installed)
–  Remove cylinder head cover → Chapter
–  Remove roller rocker arms and place on a clean surface. Ensure that roller rocker arms are not mixed up.
–  Remove spark plugs using spark plug socket and extension -3122B-.
–  Set piston of appropriate cylinder to „bottom dead centre“.
–  Screw in the valve-fitting tool -2036- to the cylinder head.
–  Fit locking tool -VW 653/3- in the spark plug thread.
   
–  Connect the pressure hose to compressed air system of at least 6 bar of excess pressure.
–  Remove the valve springs with the valve lever -VW 541/1A- and the pressure element -VW 541/7-.
–  Remove the valve stem seals with the corresponding valve stem seal extractor -3364-.
  N15-10591
installing
–  Place plastic sleeve supplied on respective valve stem. This will prevent the new valve stem seal from being damaged.
–  Place the new valve stem seal -1- in the valve stem seal pressing-on tool -3365-.
–  Lubricate the sealing lip of the valve stem seal and carefully slide the seal onto the valve guide up to the valve -2-.
Further assembly is basically the reverse of the dismantling sequence.
–  Install the cover for the roller rocker fingers → Chapter.
–  Adjust valve timing → Chapter.
–  Upper distribution housing: Installing → Chapter
–  Install the fuel lines → Chapter
  N15-10592

Valve control: repairs > < Checking valve guides