volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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Engine lubrication > < Checking valve guides

Polo Mk4

Renewing valve stem seals
   
Renewing valve stem seals
Special tools and workshop equipment required
t  Spark plug spanner -3122 B-
t  Valve spring tool -3362- with thrust piece 3362/1.
t  Valve stem seal puller -3364-
t  Valve stem seal fitting tool -3365-
t  Pressure hose -VW 653/3-

Removing
(With cylinder head installed)
–  First remove main drive toothed belt → Chapter.
–  Then remove camshaft housing → Chapter.
–  Remove roller rocker fingers and place onto a clean surface. When doing this, ensure that roller rocker fingers are not interchanged.
–  Remove spark plugs with spark plug spanner 3122B.
–  Set piston of respective cylinder to “bottom dead centre”.
   
–  Install valve spring tool -3362- with thrust piece 3362/1.
–  Screw pressure hose -VW 653/3- into spark plug thread.
–  Connect pressure hose to compressed air system supplying at least 6 bar and remove valve springs.
–  Pull off valve stem seals with 3364.
Installing
  N15-0081
–  Place plastic sleeve supplied on respective valve stem. This will prevent damage to new valve stem seal.
–  Place new valve stem seal in valve stem seal fitting tool -3365-.
–  Oil valve stem seal sealing lip and press carefully onto the valve guide.
Install camshaft housing → Chapter.
–  Install toothed belt and tension → Chapter.
Further assembly is basically the reverse of the dismantling procedure.
  N15-0083

Engine lubrication > < Checking valve guides