Daewoo Nubira User Manual page 467

1C – 72IDOHC ENGINE MECHANICAL
Cylinder Head Overhaul
Valve Grind–in
1. Lubricate the valve seat using a fine–grained paste.
2. Lift the valve rhythmically from the seat with a com-
mercially–available valve grinding tool in order to
distribute the paste.
3. Check the contact pattern on the valve head and in
the cylinder head.
4. Clean the valves, the valve guides, and the cylinder
head.
Valve Grind
1. Ensure that there are no crater line burns on the
valve cone.
2. The valve may be reground only two times. Do not
grind the valve stem end.
3. Ensure that the angle at the valve face is 45 de-
grees.
4. Inspect the assembly height of the intake valves
and the exhaust valves.
DAEWOO V–121 BL4