3. TROUBLESHOOTING
43
b)
Insert the valves, and then press the valve several times forcefully. Be sure the valve
does not rotate on the seat. The transferred marking compound will show any area of the
seat that is not concentric.
c)
Using 45°cutter, remove enough
material to produce a smooth and
concentric seat. Turn cutter clockwise,
never counterclockwise.
Tool
:
Valve Seat Cutter
d)
Use the 32°~45°cutters to narrow and
adjust the valve seat so that it contacts
the middle of the valve face.
---- The 32°cutter removes material
from the top edge (contact too high).
----The 45°cutter removes material
from the bottom edge (contact too low).
Be sure that the width of the finished valve seat is within
specification.
Standard Service
Limit
0.8mm 2.0mm
Cutter
Holder
IN.
:
32°
EX.
:
32°
IN.
:
45
°
EX
:
45
°