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Removing and installing valve stem seals with cylinder head installed > < Camshaft seal: removing and fitting

Leon Mk2

Checking hydraulic compensation elements
Checking hydraulic compensation elements
  Note
t  The hydraulic compensation elements cannot be repaired.
t  Irregular valve noise during starting is normal.
Special tools and workshop equipment required
t  Feeler gauge, 0.20 mm
Operation process
–  Start engine and run until the radiator fan has switched on once.
–  Increase engine speed to about 2,500 rpm for 2 minutes; perform road test if necessary.
  Note
If the irregular valve noises stop but recur repeatedly during short journeys, the oil retention valve must be renewed. The oil retention valve is located in the oil filter bracket → Item.
–  If the hydraulic compensation elements are still noisy, find out which is the defective compensation element as follows:
–  Remove cylinder head cover → Chapter
–  Turn crankshaft by the bolt for the toothed belt wheel until cam of supporting element to be tested is facing upwards.
   
–  Press roller rocker finger down -arrow- to determine clearance between cam and roller rocker finger.
–  If it is possible to insert a feeler gauge of 0.20 mm between cam and roller rocker finger, renew hydraulic compensation element → Chapter „Camshaft seal: removing and fitting“.
Concluding measures
–  Install cylinder head cover → Chapter.
  A15-1011

Removing and installing valve stem seals with cylinder head installed > < Camshaft seal: removing and fitting