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Reworking exhaust valve seat > < Reworking valve seats

Polo Mk5

Reworking inlet valve seat
   
Reworking inlet valve seat
  N15-0096
a
b
c
Z
α
β
γ		= Ø 28.7 mm
= max. permissible reworking dimension1
= 1.5…1.8 mm
= cylinder head lower edge
= 45° valve seat angle
= 30° upper correction angle
= 60° lower correction angle

1)  Calculating max. permissible reworking dimension → Chapter.
   

Reworking exhaust valve seat > < Reworking valve seats