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Reworking inlet valve seat > < Reworking valve seats

Octavia Mk1

Calculating maximum permissible reworking dimension
Calculating maximum permissible reworking dimension
–  Insert valve into the guide and press firmly against the valve seat.
  Note
If the valve is replaced when carrying out repair work, use a new valve for the measurement.
   
–  Measure distance -a- between the end of the valve stem and the upper face of the cylinder head with a depth gauge.
–  Calculate max. permissible reworking dimension from the distance measured and the minimum dimension.
t  Minimum dimension of inlet valve: 43.4 mm
t  Minimum dimension of exhaust valve: 43.2 mm
Measured distance less minimum dimension = max. permissible reworking dimension.
  S15-0303
Example for inlet valve:
 Measured distance 44.1 mm
-Minimum dimension- 43.4 mm
=max. permissible reworking dimension= 0.7 mm

  Note
If the max. permissible reworking dimension is 0 mm or less than 0 mm, repeat measurement with a new valve. If the measuring result is still 0 mm or less than 0 mm, replace cylinder head.
   

Reworking inlet valve seat > < Reworking valve seats