23
Figure 2-20-1 Figure 2-20-2
Figure 2-20-3
Measure the width of mating surfaces of valve
repairing limit value: 1.5mm
If the valve seat is to wide or narrow or cracked,grind it to
ensure impermeability.
4、Measure bore diameter of valve guide with internal micrometer and
special gauge.At last calculate clearance between valve stem and valve
If the mating surfaces is coarse,corrode or cannot contact with
valve seat normally.repalce it.
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