Reworking Valve Seats - Skoda Octavia Workshop Manual

OCTAVIA
Edition 04.01
S00.5104.54.20
Cylinder Head, Valve Gear
- Calculate maximum permissible reworking
dimension from the distance -a- measured
and from the minimum dimension.
Minimum dimension:
Inlet valves on outside
Inlet valve in middle
Exhaust valve
Distance -a- measured less minimum dimen-
sion = max. permissible reworking dimension.
Example:
Distance -a- measured
- Minimum dimension
= Max. permissible reworking dimension
Note:
If the maximum permissible reworking dimension
is 0 mm, repeat measurement with a new valve.
If the maximum permissible reworking dimension
is still 0 mm, replace cylinder head.
K Reworking valve seats
Dimension
∅ a
b
c
Z
45°
30°
60°
31.0 mm
32.3 mm
31.9 mm
Valve seats
mm Valve seat 26.2 - inlet valve
diameter 29.0 - exhaust valve
mm Max. permissible reworking dimension
mm Valve seat width 1.5 to 1.8 - inlet valve
Bottom edge of cylinder head
Valve seat angle
Top correction angle
Bottom correction angle
15
31.4 mm
31.0 mm
0.4 mm
1.8 - exhaust valve
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