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Renewing valve stem seals > < Checking valve guides

Leon Mk2

Renewing valve guides
Renewing valve guides
Special tools and workshop equipment required
   
t  (Ø 6 mm) Driver -T20035-
  W00-2316
t  Hand reamer with cutting fluid -T20066-
Removing
–  First check whether the valve seat insert rings and if necessary the cylinder head sealing surface can be reworked. If this is not the case then the valve guide should not be replaced.
  W00-2347
–  Drive out worn valve stem guide using driver -T20035- (Ø 6 mm) from camshaft side (valve stems guides with a repair shoulder from the combustion chamber side).
Installing
–  Coat new stem guide with oil, and press new stem guide in from the camshaft side with driver -T20035- (Ø 6 mm) until the shoulder is positioned correctly in the cold cylinder head.
  Note!
When the shoulder on stem guide makes contact, the pressure must not exceed 10 kN (approx. 1.0 t) otherwise shoulder may break off.
–  Ream valve stem guide with hand reamer -T20066-. Always use cutting fluid when doing this.
–  Reworking valve seats → Chapter.
  E15-0058

Renewing valve stem seals > < Checking valve guides