Inspection
- 66 -
<Valve seat thickness>
<Valve seat angle>
z
The disassembly of valve seat can
be pulled out by means of a
special tool with the arc welding
done at two points of valve seat
rotating tool or valve seat.
z
Regarding the valve seat
assembling, shrink the valve seat
by putting it in the dry ices for
about 1 hour or so, and then press
it into the cylinder head by means
of a special tool.
z
After coating the grinding powder
paste on valve head contacting
face of valve seat, and after
executing a sufficient lapping
operation with the rotating and
grinding motion of valve, wipe off
the grinding agent thoroughly.
Standard Limit
0.65 ~ 0.95 mm 2.5 mm
Intake Valve 30
°
Exhaust Valve 45
°
10
20
30
40
50
60
70
80
90
0
EFM2038I
O
EA0M4048
EA3M2032
Valve seat
insert
Welding bead
Cylinder head
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