Mitsubishi Eclipse 1990 Service Manual page 144

ENGINE OVERHAUL
Stem O.D.
Valve stem end
Valve stem
projection
Spring seating
surface
mm in.)
mm
in.)
(2) Measure the squareness of the spring and,
is exceeded, replace.
Standard value:
Limit: Max.
GUIDE
(1) Measure the clearance between the valve guide and valve
stem. If the limit is exceeded, replace the valve guide
or valve, or both.
Item Standard value mm (in.)
Intake
Exhaust
VALVE
(1) Assemble the valve, then measure the valve stem
projection between the end of the valve stem and the
spring seating surface. If the measurement
specified limit, replace the valve seat.
VALVE SEAT RECONDITIONING PROCEDURE
(1) Before correcting the valve seat, check for clearance
between the valve guide and valve and, if necessary,
replace the valve guide.
(2) Using the seat grinder, correct to obtain the specified
seat width and angle.
(3) After correcting the valve seat, lap the valve and valve
seat using lapping compound. Then, check the valve
stem projection (refer to VALVE SEAT in INSPECTION).
I
VALVE SEAT REPLACEMENT
(1) Cut the valve seat to be replaced
the wall thickness. Then, remove the
Head and
or less
Limit mm (in.)
0.10
0.15
inside to thin
seat.
.
the