Skoda Octavia Workshop Manual page 86

15
5 6 7 8 9
------------ ------------
¡ ¢ £ ¤ ¥ ¦ § ¨
© ¡   ©          ! "
Cylinder Head, Valve Gear
Notes:
♦ If the wear limit is exceeded, repeat meas-
urement with new valves. If the wear limit is
still exceeded, replace cylinder head.
♦ If the valve is replaced when carrying out
repairs, use new valve for the measurement.
♦ Depth gauge/sliding caliper
'    &     ( )
♦ NAC milling cutter for reworking valve seats
$  1  ( !  (
♦ Grinding paste
Notes:
♦ When repairing engines with leaking valves,
it is not sufficient to machine or replace the
valve seats and valves. It is also necessary
to inspect the valve guides for wear, particu-
larly on engines with a high mileage.
♦ Rework valve seats only sufficiently to ob-
tain a perfect contact pattern. Before rework-
ing, calculate the maximum permissible re-
working dimension. If the reworking dimen-
sion is exceeded, proper operation of the
hydraulic valve clearance compensation is
no longer assured. In this case, replace the
cylinder head.
- Insert valve and press firmly against the valve
seat.
Note:
If the valve is replaced when carrying out re-
pairs, use new valve for the measurement.
K - Measure distance -a- between end of valve
stem and top edge of cylinder head -1-.
  $ ! % &  #  $
  !  
# ! # 
valve
and
0  1 & 1   # 1  ! !  2  
 # 
m
OCTAVIA
3 # 4  ( )
Edition 04.01
S00.5104.54.20