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Replacing valve stem seals - engines with identification characters AVU, BFQ > < Valve stem seals, valves guides, valve seats

Octavia Mk1

Replacing valve stem seals - engines with identification characters AEH, AKL
Replacing valve stem seals - engines with identification characters AEH, AKL
l  Cylinder head fitted
Special tools and workshop equipment required
t  Extractor -MP1-206 (3047 A)-
t  Pressure hose -MP1-210 (VW 653/3)-
t  Valve lever -MP1-211 (VW 541/1a,/5)-
t  Insertion tool -MP1-212 (3129)-
t  Assembly device for valves -MP1-213 (2036)-
Removing
–  Remove the camshaft → Chapter.
–  Remove bucket tappets (do not interchange) and lay aside with the contact surface facing down.
–  Unscrew the spark plugs.
–  Position piston of the relevant cylinder in bottom dead centre.
   
–  Insert the assembly device -MP1-213- and adjust bearing to the stay bolt height.
–  Screw the pressure hose -MP1-210- into the spark plug thread and apply constant pressure of at least 0.6 MPa (6,0 bar) in the cylinder.
–  Remove valve springs with valve lever -MP1-211-.
  Note
If valve collets are tight, slacken with slight blows of a hammer on the valve lever.
  S15-0084
–  Use pulling device -MP1-206- to pull off valve stem seals.
Install
  S15-0085
–  To avoid damaging the new valve stem seals insert plastic bushing -A- on the valve stem.
–  Insert valve stem seal -B- into the insertion tool -MP1-212- and carefully push onto the valve guide.
–  Remove plastic sleeve.
  Note
t  After installing the camshaft, the engine must not be started for about 30 minutes. The hydraulic clearance compensation elements must settle (otherwise valves would strike the pistons).
t  After carrying out work on the valve gear, carefully crank engine at least 2 revolutions to ensure that no valve touches the piston when the engine is started.
  S15-0042

Replacing valve stem seals - engines with identification characters AVU, BFQ > < Valve stem seals, valves guides, valve seats