Daewoo D50S-2, Service Manual

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150
30
A
¥
Correction of Valve Seat Insert
1) Remove the carbon deposits from the valve seat
insert surface.
2) Remove the rough areas with a valve cutter (15û,
30û or 75û)
Do not cut the valve seat insert too much.
3) Spread compound on the surface of valve seat
insert.
4) Grind the valve and valve seat with the lapping
cup.
5) Insert valve into valve guide.
6) Check contact surface of valve whether good or
not.
7) Check the contact condition of valve seat insert.
EJM2045I
EJM2046S
B
EJM2047I
EJM2048S
Contacting
Angle(B) Standard
Intake Valve Seat
45
û
Exhaust Valve Seat
45
û
60û